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Yamaguchi M, Kushiya N, Tamura R, Nishikawa N, Kikuchi A. Trends in endometrial carcinoma: experience of a single institute for four decades. Jpn J Clin Oncol 2024; 54:599-605. [PMID: 38336479 DOI: 10.1093/jjco/hyae012] [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: 11/26/2023] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
OBJECTIVE To determine the current prognosis of endometrial carcinoma in Japan by analyzing long-term trends in endometrial carcinoma at our hospital. METHODS We divided 1463 patients with endometrial carcinoma who visited our hospital between 1984 and 2022 into group 1984-1991, group 1992-1999, group 2000-2006, group 2007-2014 and group 2015-2022. Trends were determined using the Jonckheere-Terpstra and Cochran-Armitage tests. Data were analyzed using Cox regression analysis. RESULTS When group 2015-2022 was used as a reference in the univariate analysis, the hazard ratios for the other groups were <1. In particular, the hazard ratio for group 2007-2014 was 0.65 (95% confidence interval, 0.47-0.90, P = 0.009), suggesting that the prognosis of group 2015-2022 was worse than that of group 2007-2014 and seemed to be the worst among all prognoses. In multivariate analysis, the hazard ratios for each group were 1.38, 1.42, 1.88, 1.16 and 1, respectively; the group with the worst prognosis changed from group 2015-2022 to group 2000-2006 (hazard ratio, 1.88; 95% confidence interval, 1.27-2.78, P = 0.001). Age and the rate of non-endometrioid carcinoma exhibited significantly increasing trends (P < 0.001 and P < 0.001, respectively), as did the rates of serous and mixed carcinomas (P = 0.001 and 0.024, respectively). The rates of non-endometrioid carcinoma, serous carcinoma and mixed carcinoma were 19.0%, 5.5% and 3.1% in group 2007-2014 and 28.2%, 10.8% and 4.6% in group 2015-2022, respectively. CONCLUSIONS The increasing rates of non-endometrioid carcinoma-especially serous and mixed carcinoma-may be associated with the worsening prognosis of endometrial carcinoma at our institution. Careful monitoring is needed to confirm whether this phenomenon is observed throughout Japan.
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Affiliation(s)
- Masayuki Yamaguchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata 951-8566, Japan
| | - Naohisa Kushiya
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata 951-8566, Japan
| | - Ryo Tamura
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata 951-8566, Japan
| | - Nobumichi Nishikawa
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata 951-8566, Japan
| | - Akira Kikuchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata 951-8566, Japan
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Tamura R, Kushiya N, Yamaguchi M, Nishikawa N, Motoyama T, Kawasaki T, Kikuchi A. Refractory ovarian squamous cell carcinoma arising from a seromucinous borderline tumor with squamous overgrowth: A case report. Gynecol Oncol Rep 2024; 51:101323. [PMID: 38273936 PMCID: PMC10808907 DOI: 10.1016/j.gore.2024.101323] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/27/2023] [Accepted: 01/02/2024] [Indexed: 01/27/2024] Open
Abstract
Ovarian squamous cell carcinoma (SCC) is rare, and most cases arise from ovarian teratomas. Herein, we present a case of ovarian SCC arising from an ovarian seromucinous borderline tumor (SMBT) with squamous overgrowth. A 71-year-old woman an underwent emergency laparotomy due to the rupture of a right ovarian tumor suspected to be a borderline or malignant tumor. We performed a total abdominal hysterectomy, bilateral salpingo-oophorectomy, and partial omentectomy. The postoperative diagnosis was stage IC3 ovarian SCC arising from the SMBT with a squamous overgrowth. Subsequently, she underwent six cycles of combination therapy comprising paclitaxel and carboplatin. Two months after the last chemotherapy treatment, she presented with back pain. A CT scan showed a 14 mm pelvic tumor affecting the ureter, leading to right hydronephrosis. The patient underwent tumor resection and ureteroureterostomy. The pathological diagnosis was keratinizing SCC, representing ovarian cancer recurrence. Eight months after the removal of the recurrent tumor, we found a 35 mm recurrent pelvic tumor causing right hydronephrosis. Additionally, a 20 mm pleural dissemination was identified. Comprehensive genome profiling of recurrent tumor revealed genomic abnormalities in TP53, ARID1A, PTEN, PIK3R1, and CDKN2A/2B. Regarding immunotherapy biomarkers, the microsatellite instability test result was negative, the tumor mutation burden was low, and PD-L1 was highly expressed. The patient was referred to another hospital for participation in an immunotherapy clinical trial for ovarian SCC. This case indicates that refractory ovarian SCC can arise from SMBT. Further evaluation of additional cases is required to identify the molecular biological characteristics of ovarian SCC.
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Affiliation(s)
- Ryo Tamura
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Naohisa Kushiya
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Masayuki Yamaguchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | | | - Teiichi Motoyama
- Department of Pathology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Takashi Kawasaki
- Department of Pathology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Akira Kikuchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
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Tamura R, Kitani Y, Takahashi K, Yamaguchi M, Nishikawa N, Kawasaki T, Kikuchi A. A retrospective study of Pipelle endometrial biopsy for ovarian, fallopian tube, and peritoneal cancers. J OBSTET GYNAECOL 2023; 43:2283162. [PMID: 37983014 DOI: 10.1080/01443615.2023.2283162] [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: 01/25/2023] [Accepted: 11/03/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES Although the Pipelle endometrial biopsy is widely performed as a practical and minimally invasive test for endometrial disease(s), its effectiveness in ovarian cancer has not been explored. The aim of the present study was to evaluate the results of Pipelle endometrial biopsy for ovarian, fallopian tube, and peritoneal cancers. METHODS A pre-treatment Pipelle-endometrial biopsy was performed in 90 patients with ovarian, fallopian tube, or peritoneal cancers between January 2014 and November 2021. We retrospectively analysed the association between the results of Pipelle endometrial biopsy and clinicopathological data. Moreover, we evaluated their impact on the following treatment in advanced cases initially treated with chemotherapy. RESULTS The sensitivity and false-negative rates for Pipelle endometrial biopsy were 25/90 (27.8%) and 65/90 (72.2%) in all patients, respectively, and 23/56 (41.0%) and 33/56 (58.9%) in cases with advanced disease (stages III and IV), respectively. Pipelle-positive endometrial biopsy-positive (Pipelle-positive) was not observed in 29 patients with clinical stage I disease, and Pipelle-positive patients exhibited significantly more high-grade serous carcinomas, and positive peritoneal, endometrial, and cervical cytologies than Pipelle-endometrial biopsy-negative cases. Surgical pathology was confirmed in 23 Pipelle-positive patients, and 17/23 (74.0%) had the same diagnosis as that for Pipelle endometrial biopsy. Conversely, 6/23 (26.0%) patients exhibited a minor diagnostic discrepancy between Pipelle endometrial biopsy and surgical pathology. Nineteen of the 38 (50.0%) patients initially treated with chemotherapy were identified as Pipelle-positive, contributing to a prompt histological diagnosis and pre-treatment tumour sampling. Companion diagnostic tests were performed using Pipelle endometrial biopsy samples from 4 inoperable patients. CONCLUSION Although the positive rate of Pipelle endometrial biopsy in ovarian, fallopian tube, and peritoneal cancers is low, Pipelle endometrial biopsy may enable prompt histological diagnosis and initiation of chemotherapy while collecting tumour tissue for genetic testing in some cases with advanced disease.
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Affiliation(s)
- Ryo Tamura
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Yohei Kitani
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Kotaro Takahashi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Masayuki Yamaguchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | | | - Takashi Kawasaki
- Department of Pathology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Akira Kikuchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
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Tamura R, Yamaguchi M, Kitani Y, Nishikawa N, Kawasaki T, Kikuchi A. Successful treatment of advanced squamous cell carcinoma arising from mature cystic teratoma of the ovary with homologous recombination deficiency: A case report. Int J Surg Case Rep 2023; 107:108329. [PMID: 37216734 DOI: 10.1016/j.ijscr.2023.108329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/12/2023] [Accepted: 05/14/2023] [Indexed: 05/24/2023] Open
Abstract
INTRODUCTION AND IMPORTANCE Squamous cell carcinoma (SCC) arising from mature cystic teratoma of the ovary (MCT-SCC) has a poor prognosis at advanced stages. Although the relationship between homologous recombination deficiency (HRD) and platinum-based chemotherapy sensitivity or poly (ADP ribose) polymerase (PARP) inhibitor efficacy in epithelial ovarian cancer has been demonstrated in clinical trials, the significance of HRD status in MCT-SCC has not previously been described. CASE PRESENTATION A 73-year-old woman underwent emergency laparotomy due to ovarian tumor rupture. The ovarian tumor was strongly adherent to the surrounding pelvic organs and could not be completely resected. The postoperative diagnosis was stage IIIB MCT-SCC (pT3bNXM0) of the left ovary. After surgery, we conducted the myChoice CDx. The genomic instability (GI) score of 87 was remarkably high, and there was no BRCA1/2 pathogenic mutation. After six courses of combination therapy with paclitaxel and carboplatin, the residual tumors had shrunk by 73 %. We performed interval debulking surgery (IDS), and the residual tumors were completely resected. Subsequently, the patient underwent two courses of the combination of paclitaxel, carboplatin, and bevacizumab, followed by maintenance therapy with olaparib and bevacizumab. Twelve months after IDS, no recurrence has been observed. CLINICAL DISCUSSION The present case suggests that there are some HRD cases among MCT-SCC patients and that IDS and maintenance therapy with PARP inhibitors may be effective in such cases, as in epithelial ovarian cancer. CONCLUSION Although the frequency of HRD-positive status in MCT-SCC remains unknown, HRD testing may provide appropriate treatment options for advanced MCT-SCC.
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Affiliation(s)
- Ryo Tamura
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan; Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Japan.
| | - Masayuki Yamaguchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Yohei Kitani
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
| | | | - Takashi Kawasaki
- Department of Pathology, Niigata Cancer Center Hospital, Niigata, Japan
| | - Akira Kikuchi
- Department of Gynecology, Niigata Cancer Center Hospital, Niigata, Japan
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Yamada R, Yoshimura T, Mori T, Nishioka K, Koizumi F, Nishikawa N, Fujita Y, Takahashi S, Kanehira T, Yokokawa K, Yamazaki R, Horita K, Tamura H, Wakabayashi Y, Ichiu Y, Aoyama H. Evaluation of Margin for Intra-Fractional Patient Motion during Single-Isocenter Multi Targets Volumetric Modulated Arc Therapy Stereotactic Radiation Therapy for Brain Metastases Using Actual Target Coordinates. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.814] [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: 11/26/2022]
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Shima E, Itsukaichi M, Yoshihara K, Ishiguro T, Haino K, Nishino K, Nishikawa N, Nishijima K, Enomoto T. Fetal biometric and Doppler measurements following abdominal radical trachelectomy in the second trimester of the pregnancy. BMC Pregnancy Childbirth 2022; 22:343. [PMID: 35443666 PMCID: PMC9022245 DOI: 10.1186/s12884-022-04671-6] [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: 12/05/2021] [Accepted: 04/11/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Our previous study demonstrated the safety and effectiveness of abdominal radical trachelectomy during pregnancy but did not focus on the fetus. This study aimed to clarify the influence of abdominal radical trachelectomy performed during pregnancy on the fetus. METHODS Eight cervical cancer patients who underwent abdominal radical trachelectomy at our hospital between February 2013 and August 2020 were enrolled in this study. To assess the peri- and postoperative influence on the fetus, we performed fetal heart monitoring at 30-min intervals during abdominal radical trachelectomy and calculated the estimated fetal body weight and resistance indexes of the middle cerebral artery and umbilical artery from postsurgery until delivery. RESULTS Four out of eight patients had preterm birth due to chorioamnionitis in one case and consideration of the recurrent risk of cervical cancer in three cases. Fetal heart monitoring during abdominal radical trachelectomy revealed deceleration just once in one case but no abnormal findings in the other cases. In all cases, the fetal growth after abdominal radical trachelectomy was normal until delivery. No abnormal Doppler findings were detected in the middle cerebral artery or umbilical artery. CONCLUSION Our findings clarified that abdominal radical trachelectomy performed for the treatment of early-stage cervical cancer during pregnancy has no obvious influence on fetal growth. Next, it is necessary to evaluate the growth and development of children delivered from mothers who have undergone abdominal radical trachelectomy during pregnancy.
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Affiliation(s)
- Eiri Shima
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Mina Itsukaichi
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Kosuke Yoshihara
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Tatsuya Ishiguro
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Kazufumi Haino
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Koji Nishino
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Nobumichi Nishikawa
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Koji Nishijima
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan
| | - Takayuki Enomoto
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Niigata, 951-8510, Japan.
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Shiraishi K, Masuishi T, Ogata T, Sugiyama K, Nishikawa N, Shibata K, Kudo C, Takayanagi N, Narita Y, Uda H, Kadowaki S, Ando M, Kitagawa C, Kataoka M, Muro K. P-155 A phase I study of FLOT as first-line therapy for Japanese patients with advanced gastric cancer including patients with or without severe peritoneal metastasis. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.210] [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: 11/26/2022] Open
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Ishiguro T, Nishikawa N, Ishii S, Yoshihara K, Haino K, Yamaguchi M, Adachi S, Watanabe T, Soeda S, Enomoto T. PET/MR imaging for the evaluation of cervical cancer during pregnancy. BMC Pregnancy Childbirth 2021; 21:288. [PMID: 33838651 PMCID: PMC8037915 DOI: 10.1186/s12884-021-03766-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 03/30/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Malignancy during pregnancy is increasing, and the most common type of malignancy is uterine cervical cancer. When planning the treatment of cervical cancer, it is important to look for signs of metastasis before surgery, especially metastasis to the lymph nodes. In this report, we assessed the diagnostic value of positron emission tomography/magnetic resonance imaging (PET/MRI) for evaluating cervical cancer propagation before surgery, with a focus on pregnant women. CASE PRESENTATION 18F Fluorodeoxyglucose (FDG)-PET/MRI was performed in seven pregnant cervical cancer patients (28-34 years old) at 9-18 gestational weeks. In case #5, a second PET/MRI was performed at 24 gestational weeks. Of seven FDG-PET/MRI examination series in six cases (cases #1-6), FDG-PET/MR imaging could detect cervical tumors with abnormal FDG accumulation; these tumors were confirmed with a standardized uptake value max (SUV max) titer of 4.5-16. A second PET/MRI examination in case #5 revealed the same SUV max titer as the first examination. In these six imaging series (cases #1-5), there were no signs of cancer metastasis to the parametrium and lymph nodes. However, in case #6, abnormal FDG accumulation in the left parametrial lymph nodes was also detectable. Pathological examination showed lymph node metastasis in case #6. In case #7, PET/MRI could not detect any abnormal FDG accumulation in the cervix and other sites. Cone biopsy demonstrated only micro-invasive squamous cell carcinoma. After treatment for cervical cancer, all seven patients have had no recurrence of disease within the follow-up period (2.8-5.6 years), and their children have developed appropriately. CONCLUSION PET/MRI is an effective imaging tool to evaluate cervical cancer progression in pregnancy.
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Affiliation(s)
- Tatsuya Ishiguro
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
| | - Nobumichi Nishikawa
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Shiro Ishii
- Department of Radiology and Nuclear Medicine, Fukushima Medical University Hospital, Fukushima, Japan
| | - Kosuke Yoshihara
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Kazufumi Haino
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Masayuki Yamaguchi
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Sosuke Adachi
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Takafumi Watanabe
- Department of Obstetrics and Gynecology, Fukushima Medical University Hospital, Fukushima, Japan
| | - Shu Soeda
- Department of Obstetrics and Gynecology, Fukushima Medical University Hospital, Fukushima, Japan
| | - Takayuki Enomoto
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, 1-757, Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan.
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Nishikawa N, Iwaki H, Shiraishi T, Mukai Y, Takahashi Y, Hattori N. Female, Aging, Low ratio of DCI or lower body weight increases AUC4hr of levodopa in patients with Parkinson's disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.225] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ishiguro T, Hatase T, Nishino K, Godo C, Nishikawa N, Umezu H, Motoyama T, Fukuchi T, Enomoto T. Cancer-associated retinopathy in a patient with synchronous fallopian tubal and uterine corpus cancers. EUR J GYNAECOL ONCOL 2019. [DOI: 10.12892/ejgo4778.2019] [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: 11/13/2022]
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Kameyama H, Shimada Y, Abe K, Oyanagi H, Nakano M, Nakano M, Ichikawa H, Hanyu T, Takizawa K, Nagahashi M, Sakata J, Kobayashi T, Nishikawa N, Enomoto T, Wakai T. [Digestive Surgery Intervention for Gynecological Malignant Tumor]. Gan To Kagaku Ryoho 2019; 46:2176-2178. [PMID: 32156870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
AIM This study aimed to determine surgical outcomes in patients with gynecological cancers for whom surgery was performed by gynecologists and digestive surgeons. METHODS Seventy-three patients who underwent surgery for a gynecological malignant tumor from January 2010 to December 2014 were included in this retrospective study. Data on the definitive diagnosis, operative procedures, postoperative complications, stoma settings, length of hospital stay, and prognosis was collected for each patient. RESULTS The median age of this female-only cohort was 60 years. Emergency surgery was performed in 8(11.0%)patients. Ovarian cancer was diagnosed in 56(76.7%)patients, and among these patients, the clinical disease Stage was Ⅰ, Ⅱ, Ⅲ, and Ⅳ in 4, 4, 20, and 11 patients, respectively. Moreover, 17 patients had recurrent ovarian cancer. Intestinal resection with anastomosis was performed in 25(34.2%)patients. Stoma formation was performed in 22 (30.1%)patients, however no patient underwent stoma closure surgery in the current study. The median operative time was 252 minutes, and the median blood loss was 1,190 mL. Regarding postoperative complications, ileus, pelvic abscess, and anastomotic leakage developed in 6(8.2%), 4(5.5%), and 2(2.7%)patients, respectively. The postoperative median survival time in patients with ovarian cancer was 1,399 days. CONCLUSION These results suggest that tumor debulking, including intestinal tract resection, may contribute to the prolonged prognosis of gynecological tumors, although stoma closure is difficult to perform.
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Affiliation(s)
- Hitoshi Kameyama
- Division of Digestive and General Surgery, Niigata University Graduate School of Medical and Dental Sciences
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Ishiguro T, Chihara M, Nishikawa N, Enomoto T. Superficial cervical scar endometriosis following cone biopsy. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4482.2019] [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: 11/01/2022]
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Watanabe S, Hirabayashi M, Hirata N, Hirata N, Noguchi R, Shimaki Y, Ikeda H, Tatsumi E, Yoshikawa M, Kikuchi S, Yabuta H, Nakamura T, Tachibana S, Ishihara Y, Morota T, Kitazato K, Sakatani N, Matsumoto K, Wada K, Senshu H, Honda C, Michikami T, Takeuchi H, Kouyama T, Honda R, Kameda S, Fuse T, Miyamoto H, Komatsu G, Sugita S, Okada T, Namiki N, Arakawa M, Ishiguro M, Abe M, Gaskell R, Palmer E, Barnouin OS, Michel P, French AS, McMahon JW, Scheeres DJ, Abell PA, Yamamoto Y, Tanaka S, Shirai K, Matsuoka M, Yamada M, Yokota Y, Suzuki H, Yoshioka K, Cho Y, Tanaka S, Nishikawa N, Sugiyama T, Kikuchi H, Hemmi R, Yamaguchi T, Ogawa N, Ono G, Mimasu Y, Yoshikawa K, Takahashi T, Takei Y, Fujii A, Hirose C, Iwata T, Hayakawa M, Hosoda S, Mori O, Sawada H, Shimada T, Soldini S, Yano H, Tsukizaki R, Ozaki M, Iijima Y, Ogawa K, Fujimoto M, Ho TM, Moussi A, Jaumann R, Bibring JP, Krause C, Terui F, Saiki T, Nakazawa S, Tsuda Y. Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile. Science 2019; 364:268-272. [PMID: 30890588 DOI: 10.1126/science.aav8032] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 03/07/2019] [Indexed: 11/02/2022]
Abstract
The Hayabusa2 spacecraft arrived at the near-Earth carbonaceous asteroid 162173 Ryugu in 2018. We present Hayabusa2 observations of Ryugu's shape, mass, and geomorphology. Ryugu has an oblate "spinning top" shape, with a prominent circular equatorial ridge. Its bulk density, 1.19 ± 0.02 grams per cubic centimeter, indicates a high-porosity (>50%) interior. Large surface boulders suggest a rubble-pile structure. Surface slope analysis shows Ryugu's shape may have been produced from having once spun at twice the current rate. Coupled with the observed global material homogeneity, this suggests that Ryugu was reshaped by centrifugally induced deformation during a period of rapid rotation. From these remote-sensing investigations, we identified a suitable sample collection site on the equatorial ridge.
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Affiliation(s)
- S Watanabe
- Nagoya University, Nagoya 464-8601, Japan. .,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | | | - N Hirata
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Na Hirata
- Kobe University, Kobe 657-8501, Japan
| | - R Noguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Shimaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Ikeda
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - E Tatsumi
- University of Tokyo, Tokyo 113-0033, Japan
| | - M Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Kikuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yabuta
- Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - T Nakamura
- Tohoku University, Sendai 980-8578, Japan
| | - S Tachibana
- University of Tokyo, Tokyo 113-0033, Japan.,Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Ishihara
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Morota
- Nagoya University, Nagoya 464-8601, Japan
| | - K Kitazato
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - N Sakatani
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Wada
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - H Senshu
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - C Honda
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - T Michikami
- Kindai University, Higashi-Hiroshima 739-2116, Japan
| | - H Takeuchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - T Kouyama
- National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064 Japan
| | - R Honda
- Kochi University, Kochi 780-8520, Japan
| | - S Kameda
- Rikkyo University, Tokyo 171-8501, Japan
| | - T Fuse
- National Institute of Information and Communications Technology, Kashima 314-8501, Japan
| | - H Miyamoto
- University of Tokyo, Tokyo 113-0033, Japan
| | - G Komatsu
- Università d'Annunzio, 65127 Pescara, Italy.,Chiba Institute of Technology, Narashino 275-0016, Japan
| | - S Sugita
- University of Tokyo, Tokyo 113-0033, Japan
| | - T Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,University of Tokyo, Tokyo 113-0033, Japan
| | - N Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Arakawa
- Kobe University, Kobe 657-8501, Japan
| | - M Ishiguro
- Seoul National University, Seoul 08826, Korea
| | - M Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Gaskell
- Planetary Science Institute, Tucson, AZ 85710, USA
| | - E Palmer
- Planetary Science Institute, Tucson, AZ 85710, USA
| | - O S Barnouin
- Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA
| | - P Michel
- Université Côte d'Azur, Observatoire de la Côte d'Azur, Centre National de la Recherche Scientifique (CNRS), Laboratoire Lagrange, 06304 Nice, France
| | - A S French
- University of Colorado, Boulder, CO 80309, USA
| | - J W McMahon
- University of Colorado, Boulder, CO 80309, USA
| | | | - P A Abell
- NASA Johnson Space Center, Houston, TX 77058, USA
| | - Y Yamamoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - S Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - K Shirai
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Matsuoka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Yamada
- Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Y Yokota
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,Kochi University, Kochi 780-8520, Japan
| | - H Suzuki
- Meiji University, Kawasaki 214-8571, Japan
| | - K Yoshioka
- University of Tokyo, Tokyo 113-0033, Japan
| | - Y Cho
- University of Tokyo, Tokyo 113-0033, Japan
| | - S Tanaka
- Kobe University, Kobe 657-8501, Japan
| | | | - T Sugiyama
- University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - H Kikuchi
- University of Tokyo, Tokyo 113-0033, Japan
| | - R Hemmi
- University of Tokyo, Tokyo 113-0033, Japan
| | - T Yamaguchi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - N Ogawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - G Ono
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - Y Mimasu
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Yoshikawa
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Takahashi
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Takei
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - A Fujii
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - C Hirose
- Research and Development Directorate, JAXA, Sagamihara 252-5210, Japan
| | - T Iwata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - M Hayakawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Hosoda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - O Mori
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Sawada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Shimada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Soldini
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - H Yano
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - R Tsukizaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - M Ozaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
| | - Y Iijima
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - K Ogawa
- Kobe University, Kobe 657-8501, Japan
| | - M Fujimoto
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T-M Ho
- DLR (German Aerospace Center), Institute of Space Systems, 28359 Bremen, Germany
| | - A Moussi
- Centre National d'Etudes Spatiales (CNES), 31401 Toulouse, France
| | - R Jaumann
- DLR, Institute of Planetary Research, 12489 Berlin-Adlershof, Germany
| | - J-P Bibring
- Institute d'Astrophysique Spatiale, 91405 Orsay, France
| | - C Krause
- DLR, Microgravity User Support Center, 51147 Cologne, Germany
| | - F Terui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - T Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - S Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan
| | - Y Tsuda
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara 252-5210, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan
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14
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Tamura R, Nakaoka H, Yoshihara K, Mori Y, Yachida N, Nishikawa N, Motoyama T, Okuda S, Inoue I, Enomoto T. Novel MXD4-NUTM1 fusion transcript identified in primary ovarian undifferentiated small round cell sarcoma. Genes Chromosomes Cancer 2018; 57:557-563. [PMID: 30338611 PMCID: PMC6221051 DOI: 10.1002/gcc.22668] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Revised: 06/21/2018] [Accepted: 07/04/2018] [Indexed: 12/20/2022] Open
Abstract
Primary ovarian sarcomas are extremely rare tumors, and their genomic and transcriptomic alterations remain to be elucidated. We performed whole exome sequencing of primary tumor and matched normal blood samples derived from one patient with ovarian undifferentiated small round cell sarcoma. We identified 8 nonsynonymous somatic mutations, and all mutations were missense or nonsense changes. Next, we performed RNA sequencing of the tumor sample and identified two in-frame fusion transcripts: MXD4-NUTM1 and ARL6-POT1. Most NUTM1 exons were retained in the MXD4-NUTM1 fusion transcript, and we confirmed an increase in NUTM1 mRNA and protein expression in tumor tissue. Further genomic and transcriptomic analyses might lead to the development of new therapeutic strategies based on the molecular characteristics of ovarian undifferentiated small round cell sarcoma.
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Affiliation(s)
- Ryo Tamura
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Hirofumi Nakaoka
- Division of Human GeneticsNational Institute of GeneticsMishimaJapan
| | - Kosuke Yoshihara
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Yutaro Mori
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Nozomi Yachida
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Nobumichi Nishikawa
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Teiichi Motoyama
- Department of Molecular and Diagnostic PathologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Shujiro Okuda
- Department of BioinformaticsNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Ituro Inoue
- Division of Human GeneticsNational Institute of GeneticsMishimaJapan
| | - Takayuki Enomoto
- Department of Obstetrics and GynecologyNiigata University Graduate School of Medical and Dental SciencesNiigataJapan
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15
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Ishiguro T, Yamawaki K, Chihara M, Nishikawa N, Enomoto T. Myomectomy scar ectopic pregnancy following a cryopreserved embryo transfer. Reprod Med Biol 2018; 17:509-513. [PMID: 30377408 PMCID: PMC6194266 DOI: 10.1002/rmb2.12212] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/21/2018] [Indexed: 12/18/2022] Open
Abstract
CASE A 40 year old woman with a history of a myomectomy visited the Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan, following 2 years of infertility. Magnetic resonance imaging detected an abnormal endometrial-like pseudo-cavity. A hysterosalpingography also revealed an abnormal accumulation of contrast medium at the myometrial scar site. A transvaginal ultrasound showed a thin myometrium at the lower uterine body. The patient conceived via in vitro fertilization under a luteal phase down-regulation protocol (long protocol) for controlled ovarian stimulation, followed by a cryopreserved embryo transfer during her natural ovulation cycle. After the embryo transfer, the gestational sac was located at the subserosal site of the myomectomy scar. OUTCOME An emergent laparoscopic operation was performed and the embryo was removed successfully via laparoscopy under transvaginal ultrasonography. CONCLUSION A subserosal uterine pregnancy is a rare form of intramural pregnancy, which is a rare subtype of an ectopic pregnancy, which could occur at the myomectomy site, especially after an embryo transfer. It is believed that this rare ectopic pregnancy resulted from embryo implantation under the serosa through a micro-sinus tract that was a site of suture failure of the myomectomy scar and was partially affected by the embryo transfer. Clinicians should consider the possibility of an ectopic pregnancy after uterine surgery, including a myomectomy.
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Affiliation(s)
- Tatsuya Ishiguro
- Department of Obstetrics and GynecologyNiigata University Medical and Dental HospitalNiigataJapan
| | - Kaoru Yamawaki
- Department of Obstetrics and GynecologyNiigata University Medical and Dental HospitalNiigataJapan
| | - Makoto Chihara
- Department of Obstetrics and GynecologyNiigata University Medical and Dental HospitalNiigataJapan
| | - Nobumichi Nishikawa
- Department of Obstetrics and GynecologyNiigata University Medical and Dental HospitalNiigataJapan
| | - Takayuki Enomoto
- Department of Obstetrics and GynecologyNiigata University Medical and Dental HospitalNiigataJapan
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16
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Kitani Y, Ishiguro T, Kobayashi A, Tamura R, Ueda H, Adachi S, Nishikawa N, Sekine M, Enomoto T. Ectopic pregnancy following oral levonorgestrel emergency contraception use. J Obstet Gynaecol Res 2018; 45:473-476. [PMID: 30246476 DOI: 10.1111/jog.13815] [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: 04/27/2018] [Accepted: 08/26/2018] [Indexed: 11/26/2022]
Abstract
Levonorgestrel is used worldwide as an emergency oral contraceptive. There have been occasional reports of ectopic pregnancy after oral levonorgestrel use. We present a case of ectopic tubal pregnancy after the use of oral levonorgestrel as an emergency contraceptive in a 37-year-old woman with a history of treatment for Chlamydia trachomatis infection. She conceived after sexual intercourse on menstrual day 14 of the first menstrual cycle following a normal delivery. After salpingectomy for this right tubal pregnancy, her following pregnancy was an ectopic pregnancy in the contralateral tube, which was treated with laparoscopic salpingectomy. Histopathological examination revealed endometriosis. We should be aware of ectopic pregnancy even after emergency contraceptive use, especially in patients with risk factors, such as Chlamydia infection and endometriosis. Because the efficacy of levonorgestrel decreases after ovulation, we should check the stage of the cycle before prescription.
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Affiliation(s)
- Yohei Kitani
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Tatsuya Ishiguro
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Akiko Kobayashi
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Ryo Tamura
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Haruka Ueda
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Sosuke Adachi
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Nobumichi Nishikawa
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Masayuki Sekine
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Takayuki Enomoto
- Department of Obstetrics and Gynecology, Niigata University Medical and Dental Hospital, Niigata, Japan
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17
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Sasaki T, Watari J, Kohgo M, Nishikawa N, Matsui Y. Breeding of a Brewer's Yeast Possessing Anticontaminant Properties. Journal of the American Society of Brewing Chemists 2018. [DOI: 10.1094/asbcj-42-0164] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. Sasaki
- Research and Development Laboratories, Sapporo Breweries Ltd., Okatohane, Yaizu 425, Japan
| | - J. Watari
- Research and Development Laboratories, Sapporo Breweries Ltd., Okatohane, Yaizu 425, Japan
| | - M. Kohgo
- Research and Development Laboratories, Sapporo Breweries Ltd., Okatohane, Yaizu 425, Japan
| | - N. Nishikawa
- Research and Development Laboratories, Sapporo Breweries Ltd., Okatohane, Yaizu 425, Japan
| | - Y. Matsui
- Research and Development Laboratories, Sapporo Breweries Ltd., Okatohane, Yaizu 425, Japan
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18
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Iwaki H, Kannnou M, Kubo M, Miyaue N, Tada S, Rina A, Tsujii T, Yabe H, Nishikawa N, Nagai M, Nomoto M. The association between Parkinson's disease and the serum levels of nutritional factors: A cross-sectional study with patient and spouse pairs. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Murata M, Mihara M, Hasegawa K, Jeon B, Tsai C, Nishikawa N, Oeda T, Yokoyama M, Robieson W, Facheris M, Benesh J. 24-month safety and efficacy of levodopa-carbidopa intestinal gel in Japanese, Korean, and Taiwanese patients with advanced Parkinson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.533] [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: 11/26/2022]
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20
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Ando R, Yamanishi Y, Tada S, Miyaue N, Yabe H, Nishikawa N, Nomoto M, Nagai M. Evaluation of correlation between the thickness of rectus abdominis muscle and respiratory function in patients with amyotrophic lateral sclerosis using ultrasound imaging. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.573] [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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21
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Hara Y, Maeda K, Higa S, Kawamoto K, Nishikawa N, Okazaki Y, Hiramatsu M, Nakahara H, Manabe Y, Wibowo T, Igarashi T, Ogata A. FRI0304 The Change of The Frequency of Right Heart Catheterization for The Diagnosis of Pulmonary Hypertension among Patients with Connective Tissue Diseases in A Hospital in Osaka, Japan – Comparison of The First 5 Years and The Latter 5 Years. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3391] [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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22
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Hayashibe M, Homma T, Fujimoto K, Oi T, Yagi N, Kashihara M, Nishikawa N, Ishizumi Y, Abe S, Hashimoto H, Kanekiyo K, Imagita H, Ide C, Morioka S. Locomotor improvement of spinal cord-injured rats through treadmill training by forced plantar placement of hind paws. Spinal Cord 2015; 54:521-9. [PMID: 26481711 DOI: 10.1038/sc.2015.186] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 08/26/2015] [Accepted: 09/04/2015] [Indexed: 01/06/2023]
Abstract
STUDY DESIGN Experimental training model of rats with spinal cord injury (SCI). SETTING Osaka, JapanObjective:To investigate the effect of forced treadmill training by plantar placement (PP), as compared with dorsal placement (DP), of the dorsal paws on the locomotor behaviors of spinal cord-injured rats. METHODS The spinal cord was contusion-injured at the thoracic level. Rats were divided into three groups: forced training involving stepping by PP and DP and non-forced training/assistance (nT). Training began 1 week after injury and was conducted for 4 weeks. Locomotor behaviors were estimated using Basso-Beattie-Bresnahan (BBB) scores, dorsiflexion of the hind paws and footprints of the hind paws. Histological and immunohistochemical examinations of the spinal cord lesions were conducted after 4 weeks of training. RESULTS The values, respectively, of PP, DP and nT groups at 4 weeks of training were as follows: BBB scores were 15.6±0.8, 7.7±1.3 and 10.3±0.4. The paw dorsiflexion angles were 34.1±5.2, 16.4±2.4 and 23.6±3.0 degrees, respectively. The stride angles were 5.1±0.9, 13.7±4.9 and 17.8±4.0 degrees for the left paws. Cavity volumes were 10.3±2.1, 31.0±2.0 and 28.2±4.9%. In addition to cavities, there were astrocyte-devoid areas containing some loose tissues, through which many axons extended longitudinally. CONCLUSIONS The BBB score, dorsiflexion angle and stride angle were consistently improved in the PP group. Cavity formation was more reduced, and many axons extended through coarse tissues formed in astrocyte-devoid areas at the lesion in the PP group. Forced training by PP of the hind paws promoted the behavioral and histological improvement of rats with SCI.
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Affiliation(s)
- M Hayashibe
- Department of Occupational Therapy, Aino University School of Health Sciences, Osaka, Japan.,Department of Neurorehabilitation, Graduate School of Health Sciences, Kio University, Nara, Japan
| | - T Homma
- Institute of Regeneration and Rehabilitation, Aino University School of Health Sciences, Osaka, Japan
| | - K Fujimoto
- Institute of Regeneration and Rehabilitation, Aino University School of Health Sciences, Osaka, Japan
| | - T Oi
- Department of General Education, Wakayama University, Wakayama, Japan
| | - N Yagi
- Department of Rehabilitation, Takatsuki Red Cross Hospital, Osaka, Japan
| | - M Kashihara
- Department of Rehabilitation, Kyoto Kaisei Hospital, Kyoto, Japan
| | - N Nishikawa
- Department of Rehabilitation, Kyoto Kaisei Hospital, Kyoto, Japan
| | - Y Ishizumi
- Department of Rehabilitation, North Osaka Police Hospital, Osaka, Japan
| | - S Abe
- Department of Occupational Therapy, Aino University School of Health Sciences, Osaka, Japan
| | - H Hashimoto
- Department of Occupational Therapy, Aino University School of Health Sciences, Osaka, Japan
| | - K Kanekiyo
- Institute of Regeneration and Rehabilitation, Aino University School of Health Sciences, Osaka, Japan
| | - H Imagita
- Department of Exercise and Functional Physiology, Graduate School of Health Sciences, Kio University, Nara, Japan
| | - C Ide
- Institute of Regeneration and Rehabilitation, Aino University School of Health Sciences, Osaka, Japan
| | - S Morioka
- Department of Neurorehabilitation, Graduate School of Health Sciences, Kio University, Nara, Japan
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23
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Egawa-Takata T, Ueda Y, Morimoto A, Yoshino K, Kimura T, Nishikawa N, Sekine M, Horikoshi Y, Takagi T, Enomoto T. Survey of Japanese mothers of daughters eligible for human papillomavirus vaccination on attitudes about media reports of adverse events and the suspension of governmental recommendation for vaccination. J Obstet Gynaecol Res 2015; 41:1965-71. [DOI: 10.1111/jog.12822] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 06/28/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Tomomi Egawa-Takata
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Osaka University Graduate School of Medicine; Osaka Japan
| | - Yutaka Ueda
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Osaka University Graduate School of Medicine; Osaka Japan
| | - Akiko Morimoto
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Osaka University Graduate School of Medicine; Osaka Japan
| | - Kiyoshi Yoshino
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Osaka University Graduate School of Medicine; Osaka Japan
| | - Tadashi Kimura
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Osaka University Graduate School of Medicine; Osaka Japan
| | - Nobumichi Nishikawa
- Department of Obstetrics and Gynecology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - Masayuki Sekine
- Department of Obstetrics and Gynecology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | | | - Tetsu Takagi
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
| | - Takayuki Enomoto
- The Obstetrical Gynecological Society of Osaka; Osaka Japan
- Department of Obstetrics and Gynecology; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
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Morimoto A, Ueda Y, Egawa-Takata T, Yagi A, Terai Y, Ohmichi M, Ichimura T, Sumi T, Murata H, Kanzaki H, Nakai H, Mandai M, Yoshino K, Fujita M, Kimura T, Saito J, Sobue T, Nishikawa N, Sekine M, Enomoto T, Horikoshi Y, Takagi T. Effect on HPV vaccination in Japan resulting from news report of adverse events and suspension of governmental recommendation for HPV vaccination. Int J Clin Oncol 2014; 20:549-55. [PMID: 25001869 DOI: 10.1007/s10147-014-0723-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 06/12/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND Administration of the human papillomavirus (HPV) vaccine decreased dramatically in Japan after extensive news of adverse vaccine events and suspension of the governmental recommendation for the vaccine. In this study, we investigated the knowledge and acceptance of vaccinated adolescents concerning cervical cancer, cancer screening and the HPV vaccine. Furthermore, we analyzed whether and by how much the news affected acceptance of the vaccination. METHODS This study was conducted as a part of Osaka Clinical resEArch of HPV vacciNe (OCEAN) study. A questionnaire was distributed to 2,777 study registrants. RESULTS The response rate was 38%. The recognition rate of the news of the vaccine's adverse events was 80%; it was 68% for awareness of the government's announcement of the suspension of its recommendation for the vaccine. Among those who had a chance to hear or see the negative news during their vaccination period, 46 (60%) continued vaccination while knowing of the news, 22 (29%) discontinued vaccination, and 9 (11%) continued vaccination without an awareness of the news. Reports of the vaccine's adverse events were the main reason for not continuing the vaccination series. Those who consulted doctors after hearing the adverse news were significantly more likely to continue their vaccinations than those who did not. CONCLUSIONS Our results should help in understanding the need for a strong promotion of vaccine usage and cancer screening after future retraction of the recommendation suspension. This may apply to other countries with an unsatisfactory rate of HPV vaccination due to fears of adverse vaccine events.
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Affiliation(s)
- Akiko Morimoto
- The Obstetrical Gynecological Society of Osaka, 4-4-3 Kawaramachi, Chuo-ku, Osaka, 541-0048, Japan
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Myojin M, Hosokawa M, Tanabe S, Takahashi H, Nishikawa N, Shimizu S. The Common Late Toxicities Observed After Definitive Chemoradiation Therapy for Esophageal Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.768] [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: 11/29/2022]
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26
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Shimizu S, Nishioka K, Onimaru R, Kinoshita R, Harada K, Nishikawa N, Abe T, Maruyama S, Shinohara N, Shirato H. Decreasing Acute and Late Toxicity Using Urethral Dose Reduction and Smaller Safety Margin Around CTV for Prostate Cancer Intensity Modulated Radiation Therapy (IMRT) With a Real-time Tumor-tracking (RTRT) System. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.468] [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: 10/27/2022]
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27
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Nishioka K, Shimizu S, Onimaru R, Kinoshita R, Harada K, Nishikawa N, Abe T, Maruyama S, Shinohara N, Shirato H. Interfractional Setup Error and Intrafractional Bladder Motion During Radiation Therapy for Bladder Tumors. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.2058] [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: 11/29/2022]
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Choudhury ME, Sugimoto K, Kubo M, Iwaki H, Tsujii T, Kyaw WT, Nishikawa N, Nagai M, Tanaka J, Nomoto M. Zonisamide up-regulated the mRNAs encoding astrocytic anti-oxidative and neurotrophic factors. Eur J Pharmacol 2012; 689:72-80. [PMID: 22659113 DOI: 10.1016/j.ejphar.2012.05.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 04/27/2012] [Accepted: 05/15/2012] [Indexed: 01/28/2023]
Abstract
Zonisamide has been proven as an effective drug for the recovery of degenerating dopaminergic neurons in the animal models of Parkinson's disease. However, several lines of evidence have questioned the neuroprotective capacity of zonisamide in animal models of Parkinson's disease. Although it suppresses dopaminergic neurodegeneration in animal models, the cellular and molecular mechanisms underlying the effectiveness of zonisamide are not fully understood. The current study demonstrates the effects of zonisamide on astrocyte cultures and two 6-hydroxydopamine-induced models of Parkinson's disease. Using primary astrocyte cultures, we showed that zonisamide up-regulated the expression of mRNA encoding mesencephalic astrocyte-derived neurotrophic factor, vascular endothelial growth factor, proliferating cell nuclear antigen, metallothionein-2, copper/zinc superoxide dismutase, and manganese superoxide dismutase. Similar responses to zonisamide were found in substantia nigra where the rats were pre-treated with 6-hydroxydopamine. Notably, pharmacological inhibition of 6-hydroxydopamine-induced toxicity by zonisamide pre-treatment was also confirmed using rat mesencephalic organotypic slice cultures of substantia nigra. In addition to this, zonisamide post-treatment also attenuated the nigral tyrosine hydroxylase-positive neuronal loss induced by 6-hydroxydopamine. Taken together, these studies demonstrate that zonisamide protected dopamine neurons in two Parkinson's disease models through a novel mechanism, namely increasing the expression of some important astrocyte-mediated neurotrophic and anti-oxidative factors.
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Affiliation(s)
- M E Choudhury
- Department of Therapeutic Medicine (Clinical Pharmacology and Neurology), Ehime University Graduate School of Medicine, Shitsukawa, Toon-Shi, Ehime 791-0295, Japan
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Yoshida K, Yoshihara K, Adachi S, Haino K, Nishino K, Yamaguchi M, Nishikawa N, Kashima K, Yahata T, Masuzaki H, Katabuchi H, Ikuma K, Suginami H, Tanaka K. Possible involvement of the E-cadherin gene in genetic susceptibility to endometriosis. Hum Reprod 2012; 27:1685-9. [PMID: 22434855 DOI: 10.1093/humrep/des080] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Endometriotic cells display invasive characteristics, despite their benign histological appearance. Recently, the epithelial-mesenchymal transition, in which epithelial cells acquire mesenchymal and migratory properties, has attracted attention as a mechanism of tumor invasion. We aimed to investigate the association between endometriosis and polymorphisms of the E-cadherin gene, a central player in the epithelial-mesenchymal transition, in Japanese women. METHODS Twelve single-nucleotide polymorphisms (SNPs) in the E-cadherin gene were identified by real-time polymerase chain reaction using a TaqMan assay in 511 women with endometriosis (the majority in Stages III and IV) and 498 healthy controls. RESULTS Allele frequency analysis indicated that there was a marginally higher frequency of the rs4783689 C allele in women with endometriosis compared with controls (corrected P = 0.007; odds ratio = 1.37; 95% confidence interval, 1.14-1.64). No significant associations with endometriosis were found for the other 11 SNPs. CONCLUSIONS Although this study was limited by sample size, the E-cadherin gene polymorphism rs4783689 was marginally associated with endometriosis in the Japanese population, suggesting that E-cadherin might be involved in genetic susceptibility to endometriosis.
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Affiliation(s)
- Kunihiko Yoshida
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Watanabe J, Kubo Y, Ogiya A, Tadokoro Y, Tanaka K, Nishikawa N, Sato M, Takahashi K. 236 Bone Management by Bisphosphonate in Metastatic Breast Cancer Patients. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70304-0] [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: 11/24/2022]
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31
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Sugaya S, Yahata T, Nishikawa N, Arinami Y, Maruhashi T, Takakuwa K, Tanaka K. Severe Asherman's syndrome complicated with placenta increta conceived by intracytoplasmic sperm injection following hysteroscopic surgery. CLIN EXP OBSTET GYN 2012; 39:547-549. [PMID: 23444767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Although severe Asherman's syndrome is a disease that may cause infertility, pregnancy and childbirth are possible by performing hysteroscopic surgery. However, the obstetrical outcome is not always satisfactory. We report a case where severe Asherman's syndrome occurred following a cesarean section. Hysteroscopic surgery was performed due to secondary infertility, and pregnancy was achieved through a subsequent intracytoplasmic sperm injection. At 23 weeks of gestation, the patient was hospitalized due to the threat of premature labor, and a cesarean section was performed at 29 weeks of gestation after pregnancy-induced hypertension occurred. It was determined to be abnormal adherent placentation such as placenta increta through intraoperative findings, and a cesarean hysterectomy was performed. The pathological diagnosis of the uterus was placenta increta. Due to the risk of complications from placenta increta in pregnancies following hysteroscopic surgery in patients with severe Asherman's syndrome, it is important to realize the high risk involved in such cases during the pregnancy course, and careful perinatal management should be required.
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Affiliation(s)
- S Sugaya
- Department of Obstetrics and Gynecology, Joetsu General Hospital, Joetsu City, Japan.
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32
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Tadokoro Y, Nishikawa N, Ogiya A, Tanaka K, Takahashi K, Mitsuya K, Watanabe J, Yamasaki S, Uematsu T, Kasami M. Breast cancer leptomeningeal metastasis. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e11524] [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: 11/20/2022] Open
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Onodera S, Aoyama H, Hashimoto N, Toyomaki A, Nishikawa N, Tha K, Ogisu K, Terae S, Shirato H. An Internationally Compatible, Japanese Neurocognitive Function Test Battery for the Assessment of Radiation-induced Brain Injury. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kyaw WT, Moritoyo T, Nishikawa N, Nagai M, Kubo M, Choudhury M, Nomoto M. P5-12 Evaluation of patients with Parkinson's disease using driving simulator in comparison with neurological signs. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60534-2] [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: 10/18/2022]
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Tanaka T, Kuratsukuri K, Yoshimura R, Morimoto K, Nishikawa N, Nakatani T. MP-03.13: Hyperbaric oxygen (HBO) therapy suppresses the symptoms in painful bladder syndrome/interstitial cystitis (PBS/IC) resistant to conventional treatments: long-term result of a pilot study in Japan. Urology 2010. [DOI: 10.1016/j.urology.2010.07.388] [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: 11/17/2022]
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Furuhama A, Toida T, Nishikawa N, Aoki Y, Yoshioka Y, Shiraishi H. Development of an ecotoxicity QSAR model for the KAshinhou Tool for Ecotoxicity (KATE) system, March 2009 version. SAR QSAR Environ Res 2010; 21:403-13. [PMID: 20818579 PMCID: PMC2946238 DOI: 10.1080/1062936x.2010.501815] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Accepted: 04/28/2010] [Indexed: 05/14/2023]
Abstract
The KAshinhou Tool for Ecotoxicity (KATE) system, including ecotoxicity quantitative structure-activity relationship (QSAR) models, was developed by the Japanese National Institute for Environmental Studies (NIES) using the database of aquatic toxicity results gathered by the Japanese Ministry of the Environment and the US EPA fathead minnow database. In this system chemicals can be entered according to their one-dimensional structures and classified by substructure. The QSAR equations for predicting the toxicity of a chemical compound assume a linear correlation between its log P value and its aquatic toxicity. KATE uses a structural domain called C-judgement, defined by the substructures of specified functional groups in the QSAR models. Internal validation by the leave-one-out method confirms that the QSAR equations, with r(2 )> 0.7, RMSE 5, give acceptable q(2) values. Such external validation indicates that a group of chemicals with an in-domain of KATE C-judgements exhibits a lower root mean square error (RMSE). These findings demonstrate that the KATE system has the potential to enable chemicals to be categorised as potential hazards.
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Affiliation(s)
- A Furuhama
- Research Center for Environmental Risk, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba 305-8506, Japan.
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Nishikawa N, Nagai M, Moritoyo T, Yabe H, Nomoto M. Plasma amantadine concentrations in patients with Parkinson's disease. Parkinsonism Relat Disord 2008; 15:351-3. [PMID: 18823813 DOI: 10.1016/j.parkreldis.2008.08.005] [Citation(s) in RCA: 33] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2008] [Revised: 07/31/2008] [Accepted: 08/08/2008] [Indexed: 11/24/2022]
Abstract
We determined plasma amantadine concentrations in patients with Parkinson's disease (PD) in daily clinical practice and investigated the relationship between plasma concentration and adverse reactions to clarify the safe therapeutic range. Seventy-eight consecutive PD patients on stable amantadine treatment were recruited. Plasma concentration of amantadine was measured 3h after the administration of morning amantadine dose. Serum creatinine was measured to estimate renal function. The mean daily dose of amantadine was 135.1+/-62.3mg/day, and the mean plasma amantadine concentration was 812.5+/-839.5 ng/ml (range, 91-4400 ng/ml). Plasma amantadine concentration increased according to increasing renal dysfunction. Three patients exhibited adverse reactions, such as myoclonus, hallucinations, and delirium, and all of them showed plasma amantadine concentration >3000 ng/ml. None of the three cases had previously shown such side effects. PD patients who have not developed any psychiatric symptoms as adverse reactions to the treatment may develop myoclonus, hallucination, or delirium when the plasma concentration of amantadine exceeds 3000 ng/ml. It is therefore recommended to use amantadine at the plasma concentration of less than 3000 ng/ml in the treatment of Parkinson's disease, especially in elderly patients.
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Affiliation(s)
- N Nishikawa
- Department of Medicine (Neurology), Ehime University Graduate School of Medicine, Shitsukawa Tohon, Ehime 791-0295, Japan
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38
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Suzuki H, Toyota M, Carraway H, Gabrielson E, Ohmura T, Fujikane T, Nishikawa N, Sogabe Y, Nojima M, Sonoda T, Mori M, Hirata K, Imai K, Shinomura Y, Baylin SB, Tokino T. Erratum: Frequent epigenetic inactivation of Wnt antagonist genes in breast cancer. Br J Cancer 2008. [PMCID: PMC2480974 DOI: 10.1038/sj.bjc.6604507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Suzuki H, Toyota M, Carraway H, Caraway H, Gabrielson E, Ohmura T, Fujikane T, Nishikawa N, Sogabe Y, Nojima M, Sonoda T, Mori M, Hirata K, Imai K, Shinomura Y, Baylin SB, Tokino T. Frequent epigenetic inactivation of Wnt antagonist genes in breast cancer. Br J Cancer 2008; 98:1147-56. [PMID: 18283316 PMCID: PMC2275475 DOI: 10.1038/sj.bjc.6604259] [Citation(s) in RCA: 187] [Impact Index Per Article: 11.7] [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] [Indexed: 01/12/2023] Open
Abstract
Although mutation of APC or CTNNB1 (β-catenin) is rare in breast cancer, activation of Wnt signalling is nonetheless thought to play an important role in breast tumorigenesis, and epigenetic silencing of Wnt antagonist genes, including the secreted frizzled-related protein (SFRP) and Dickkopf (DKK) families, has been observed in various tumours. In breast cancer, frequent methylation and silencing of SFRP1 was recently documented; however, altered expression of other Wnt antagonist genes is largely unknown. In the present study, we found frequent methylation of SFRP family genes in breast cancer cell lines (SFRP1, 7 out of 11, 64%; SFRP2, 11 out of 11, 100%; SFRP5, 10 out of 11, 91%) and primary breast tumours (SFRP1, 31 out of 78, 40%; SFRP2, 60 out of 78, 77%; SFRP5, 55 out of 78, 71%). We also observed methylation of DKK1, although less frequently, in cell lines (3 out of 11, 27%) and primary tumours (15 out of 78, 19%). Breast cancer cell lines express various Wnt ligands, and overexpression of SFRPs inhibited cancer cell growth. In addition, overexpression of a β-catenin mutant and depletion of SFRP1 using small interfering RNA synergistically upregulated transcriptional activity of T-cell factor/lymphocyte enhancer factor. Our results confirm the frequent methylation and silencing of Wnt antagonist genes in breast cancer, and suggest that their loss of function contributes to activation of Wnt signalling in breast carcinogenesis.
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Affiliation(s)
- H Suzuki
- First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan
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Nishikawa N, Sato T, Suzumori N, Sonta S, Suzumori K. Meiotic segregation analysis in male translocation carriers by using fluorescent in situ hybridization. ACTA ACUST UNITED AC 2007; 31:60-6. [PMID: 17459123 DOI: 10.1111/j.1365-2605.2007.00759.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Balanced reciprocal and Robertsonian translocations are the most common structural chromosome abnormalities in humans, with incidences of 0.7 and 1.23 per 1000. These translocations can affect fertility and/or pregnancy outcome because of possibly impaired production of gametes with an unbalanced zygote caused by the parental arrangement. Fertility problems in male translocation carriers are because of various degrees of sperm alterations that are directly related to the disturbance of the meiotic process. Investigation of human sperm chromosomes was performed by karyotyping spermatozoa after penetration of zona-free hamster oocytes, karyotype analysis now being possible to analyse the segregation patterns by using fluorescent in situ hybridization (FISH). Here, we document the results of meiotic segregation analysis for four Robertsonian and four reciprocal translocation carriers by FISH. In the sperm of Robertsonian translocation males, the majority of spermatozoa were normal/balanced. On the other hand, males with reciprocal translocations demonstrated a high rate of unbalanced spermatozoa of about 50% on meiotic segregation, with an unusually high rate (23.5%) of 3 : 1 segregation. This knowledge can be used for genetic counselling of families with these types of translocations.
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Affiliation(s)
- N Nishikawa
- Obstetrics and Gynaecology, Johoku Municipal Hospital, Nagoya, Japan
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41
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Nojima M, Suzuki H, Toyota M, Watanabe Y, Maruyama R, Sasaki S, Sasaki Y, Mita H, Nishikawa N, Yamaguchi K, Hirata K, Itoh F, Tokino T, Mori M, Imai K, Shinomura Y. Frequent epigenetic inactivation of SFRP genes and constitutive activation of Wnt signaling in gastric cancer. Oncogene 2007; 26:4699-713. [PMID: 17297461 DOI: 10.1038/sj.onc.1210259] [Citation(s) in RCA: 176] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Activation of Wnt signaling has been implicated in gastric tumorigenesis, although mutations in APC (adenomatous polyposis coli), CTNNB1 (beta-catenin) and AXIN are seen much less frequently in gastric cancer (GC) than in colorectal cancer. In the present study, we investigated the relationship between activation of Wnt signaling and changes in the expression of secreted frizzled-related protein (SFRP) family genes in GC. We frequently observed nuclear beta-catenin accumulation (13/15; 87%) and detected the active form of beta-catenin in most (12/16; 75%) GC cell lines. CpG methylation-dependent silencing of SFRP1, SFRP2 and SFRP5 was frequently seen among GC cell lines (SFRP1, 16/16, 100%; SFRP2, 16/16, 100%; SFRP5, 13/16, 81%) and primary GC specimens (SFRP1, 42/46, 91%; SFRP2, 44/46, 96%; SFRP5, 30/46, 65%), and treatment with the DNA methyltransferase inhibitor 5-aza-2'-deoxycytidine rapidly restored SFRP expression. Ectopic expression of SFRPs downregulated T-cell factor/lymphocyte enhancer factor transcriptional activity, suppressed cell growth and induced apoptosis in GC cells. Analysis of global expression revealed that overexpression of SFRP2 repressed Wnt target genes and induced changes in the expression of numerous genes related to proliferation, growth and apoptosis in GC cells. It thus appears that aberrant SFRP methylation is one of the major mechanisms by which Wnt signaling is activated in GC.
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Affiliation(s)
- M Nojima
- First Department of Internal Medicine, Sapporo Medical University, Sapporo, Japan
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Yahata T, Nishikawa N, Aoki Y, Tanaka K. Tumor lysis syndrome associated with weekly paclitaxel treatment in a case with ovarian cancer. Gynecol Oncol 2006; 103:752-4. [PMID: 16857250 DOI: 10.1016/j.ygyno.2006.06.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2006] [Revised: 06/02/2006] [Accepted: 06/04/2006] [Indexed: 10/24/2022]
Abstract
BACKGROUND Tumor lysis syndrome (TLS) is characterized by biochemical changes such as hyperuricemia and hyperkalemia due to rapid tumor lysis of malignant cells, usually after chemotherapy. TLS is a rare complication in nonhematological malignancies. CASE A 53-year-old female received intravenous weekly paclitaxel for recurrent ovarian cancer with massive ascites. Five days following the administration of paclitaxel, the patient developed TLS. She responded well to appropriate treatment with a combination of vigorous intravenous hydration, furosemide, allopurinol, and sodium bicarbonate. CONCLUSION This case report describes the first patient to develop TLS following paclitaxel administration for ovarian cancer. Our case is extremely exceptional because TLS occurred after the low dosage administration of paclitaxel for relatively insensitive tumor types without any risk factors.
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Affiliation(s)
- Tetsuro Yahata
- Department of Obstetrics and Gynecology, Niigata University School of Medicine, 1-757 Asahimachi-Dori, Niigata, Japan.
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Terasawa K, Toyota M, Sagae S, Ogi K, Suzuki H, Sonoda T, Akino K, Maruyama R, Nishikawa N, Imai K, Shinomura Y, Saito T, Tokino T. Epigenetic inactivation of TCF2 in ovarian cancer and various cancer cell lines. Br J Cancer 2006; 94:914-21. [PMID: 16479257 PMCID: PMC2361363 DOI: 10.1038/sj.bjc.6602984] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Transcription factor 2 gene (TCF2) encodes hepatocyte nuclear factor 1β (HNF1β), a transcription factor associated with development and metabolism. Mutation of TCF2 has been observed in renal cell cancer, and by screening aberrantly methylated genes, we have now identified TCF2 as a target for epigenetic inactivation in ovarian cancer. TCF2 was methylated in 53% of ovarian cancer cell lines and 26% of primary ovarian cancers, resulting in loss of the gene's expression. TCF2 expression was restored by treating cells with a methyltransferase inhibitor, 5-aza-2′deoxycitidine (5-aza-dC). In addition, chromatin immunoprecipitation showed deacetylation of histone H3 in methylated cells and, when combined with 5-aza-dC, the histone deacetylase inhibitor trichostatin A synergistically induced TCF2 expression. Epigenetic inactivation of TCF2 was also seen in colorectal, gastric and pancreatic cell lines, suggesting general involvement of epigenetic inactivation of TCF2 in tumorigenesis. Restoration of TCF2 expression induced expression of HNF4α, a transcriptional target of HNF1β, indicating that epigenetic silencing of TCF2 leads to alteration of the hepatocyte nuclear factor network in tumours. These results suggest that TCF2 is involved in the development of ovarian cancers and may represent a useful target for their detection and treatment.
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Affiliation(s)
- K Terasawa
- Department of Obstetrics and Gynecology, Sapporo Medical University, Sapporo 060-8543, Japan
| | - M Toyota
- Department of Molecular Biology, Cancer Research Institute, Sapporo Medical University, Sapporo 060-8543, Japan
- First Department of Internal Medicine, Sapporo Medical University, Sapporo 060-8543, Japan
- PRESTO, JST, Kawaguchi, Japan
- Department of Molecular Biology, Cancer Research Institute, South-1 West-17, Chuo-ku, Sapporo, Hokkaido, Japan. E-mail:
| | - S Sagae
- Department of Obstetrics and Gynecology, Sapporo Medical University, Sapporo 060-8543, Japan
| | - K Ogi
- Department of Molecular Biology, Cancer Research Institute, Sapporo Medical University, Sapporo 060-8543, Japan
| | - H Suzuki
- Department of Public Health, Sapporo 060-8543, Japan
| | - T Sonoda
- Department of Public Health, Sapporo 060-8543, Japan
| | - K Akino
- Department of Molecular Biology, Cancer Research Institute, Sapporo Medical University, Sapporo 060-8543, Japan
- First Department of Internal Medicine, Sapporo Medical University, Sapporo 060-8543, Japan
| | - R Maruyama
- First Department of Internal Medicine, Sapporo Medical University, Sapporo 060-8543, Japan
| | - N Nishikawa
- Department of Molecular Biology, Cancer Research Institute, Sapporo Medical University, Sapporo 060-8543, Japan
- First Department of Surgery, Sapporo Medical University, Sapporo 060-8543, Japan
| | - K Imai
- First Department of Internal Medicine, Sapporo Medical University, Sapporo 060-8543, Japan
| | - Y Shinomura
- First Department of Internal Medicine, Sapporo Medical University, Sapporo 060-8543, Japan
| | - T Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University, Sapporo 060-8543, Japan
| | - T Tokino
- Department of Molecular Biology, Cancer Research Institute, Sapporo Medical University, Sapporo 060-8543, Japan
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Amikura T, Aoki Y, Banzai C, Yokoo T, Nishikawa N, Sekine M, Suzuki M, Tanaka K. Metastatic choriocarcinoma successfully treated with paclitaxel and carboplatin after interstitial lung disease induced by EMA-CO. Gynecol Oncol 2006; 102:573-5. [PMID: 16580712 DOI: 10.1016/j.ygyno.2006.02.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2006] [Revised: 02/23/2006] [Accepted: 02/25/2006] [Indexed: 11/29/2022]
Abstract
BACKGROUND Well-established first-line chemotherapy (such as EMA-CO) is extraordinary active for gestational choriocarcinoma. However, it causes very serious situation once drug-induced acute interstitial lung disease occurs during the treatment. CASE A 31-year-old Japanese woman with metastatic choriocarcinoma was treated with EMA-CO as an initial chemotherapy regimen for seven cycles. Her beta-hCG dropped from 13,087 ng/ml to 2.2 ng/ml. At 11 days after 7th cycle of EMA-CO treatment, however, she developed respiratory failure, and was diagnosed as having EMA-CO-induced interstitial lung disease with bilateral ground-glass opacity on CT scan, and the examination of the bronchoalveolar lavage fluid. After high-dose steroid therapy, symptoms and ground-glass opacity on CT scan were remarkably improved. She then commenced a regimen of carboplatin (AUC 5) and paclitaxel (180 mg/m2). After completing 8 cycles, her beta-hCG dropped to <0.2 ng/ml. Three additional cycles were administered and the patient remained clinically free of disease, with normal beta-hCG levels for 11 months. CONCLUSIONS Paclitaxel and carboplatin combination is active and appears to be a viable alternative to EMA-CO combination chemotherapy in metastatic choriocarcinoma even after EMA-CO-induced interstitial lung disease.
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Affiliation(s)
- Takayuki Amikura
- Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi dori Niigata 951-8510, Japan
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Aoki Y, Amikura T, Nishikawa N, Sekine M, Yahata T, Fujita K, Tanaka K. Irinotecan hydrochloride (CPT-11) and mitomycin C in docetaxel-carbopoatin (DJ) refractory ovarian cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5143] [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: 11/20/2022] Open
Affiliation(s)
- Y. Aoki
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - T. Amikura
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - N. Nishikawa
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - M. Sekine
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - T. Yahata
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - K. Fujita
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
| | - K. Tanaka
- Niigata Univ Graduate Sch of Medcl and, Niigata, Japan
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Yamada S, Yamada K, Nishikawa N, Hioki R, Nirasawa M, Kii K, Ryugo H, Iwama M, Fukuda M. Determination of vitamin B12 using the enzyme glycerol dehydrase. Scand J Clin Lab Invest 2005; 64:185-94. [PMID: 15222628 DOI: 10.1080/00365510410001158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Glycerol dehydrase is an enzyme that catalyzes dehydration of glycerol into beta-propionaldehyde. It requires 5'-deoxyadenosylcobalamin, one of the forms of vitamin B12, as a coenzyme. The enzyme is inactivated in vitro by all forms of vitamin B12 stoichiometrically. The objective of this study was to determine vitamin B12 content by utilizing the inactivation of the enzyme by vitamin B12. After various examinations, an excellent standard curve was obtained up to 1 pmol vitamin B12 using 14 mU of the enzyme per tube. Glycerol dehydrase does not respond to vitamin B12 if it is bound to haptocorrin, a vitamin B12-binding protein. This necessitates a procedure for extraction of vitamin B12 from samples before assay. The enzyme was less inactivated by 5'-deoxyadenosylcobalamin than any other form of vitamin B12. However, this did not matter because all forms of vitamin B12 were converted into cyanocobalamin during the extraction procedure cited above, which was performed in a buffer containing potassium cyanide.
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Affiliation(s)
- S Yamada
- Laboratory of Nutrition, Faculty of Education, Hokkaido University of Education, Sapporo, Japan.
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Akita Y, Kozaki K, Nakagawa A, Saito T, Ito S, Tamada Y, Fujiwara S, Nishikawa N, Uchida K, Yoshikawa K, Noguchi T, Miyaishi O, Shimozato K, Saga S, Matsumoto Y. Cyclooxygenase-2 is a possible target of treatment approach in conjunction with photodynamic therapy for various disorders in skin and oral cavity. Br J Dermatol 2004; 151:472-80. [PMID: 15327557 DOI: 10.1111/j.1365-2133.2004.06053.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [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: 01/13/2023]
Abstract
BACKGROUND Anti-cancer effects of cyclooxygenase (COX)-2 inhibitors have been reported, but not fully investigated in skin and oral diseases. 5-aminolaevulinic acid (ALA)-based photodynamic therapy (PDT) for treating those patients with skin and oral lesions is a highly sophisticated procedure, but the incidence of disease recurrence after treatment is rather significant. OBJECTIVE To confirm that COX-2 could be a molecular target in adjunctive therapy to ALA-based PDT, we investigated (i) COX-2 expression in various skin and oral diseases, and (ii) the inhibitory effects on cellular growth of COX-2 selective inhibitor (nimesulide), ALA-based PDT and their combination on human oral squamous cell carcinoma (SCC) cell lines. METHODS A total of 129 biopsy samples from the skin and oral mucosal lesions were tested immunohistochemically for COX-2 expression. Then the in vitro effects of nimesulide, ALA-based PDT, and their combination were determined on two SCC cell lines, HSC-2 and HSC-4. Three different methods (MTT assay, double-staining for annexin V and propidium iodide, caspase-3/CPP32 fluorometric protease assay) were applied for evaluation of their inhibitory effects on these two cell lines. RESULTS Among the skin diseases, a considerable number of COX-2 high expressers were found in actinic keratosis (15 of 25, 60%), Bowen's disease (13 of 17, 76%) and extramammary Paget's disease (15 of 15, 100%). In contrast, only one of 33 (3%) basal cell carcinoma tumours was a COX-2 high expresser. Among the oral mucosal biopsies, the proportion of COX-2 high expressers increased gradually from hyperplasia (one of six, 17%) through mild dysplasia (five of eight, 63%) and moderate dysplasia (20 of 23, 87%) to severe dysplasia (two of two, 100%). Nimesulide had an inhibitory effect in vitro on HSC-2 (proven to be a COX-2 high expresser), but not on HSC-4 (a COX-2 non-expresser). While ALA-based PDT showed an inhibitory effect on both HSC-2 and HSC-4, most importantly the combination of nimesulide and ALA-based PDT demonstrated a significant synergistic effect on the cellular growth inhibition of only HSC-2, but not of HSC-4. CONCLUSIONS Our study strongly suggests that COX-2 can be one of the molecular targets in treating various skin and oral diseases. The results from our in vitro experiments also prompt us to develop a new protocol with a combination of COX-2 selective inhibitor and ALA-based PDT for more effective treatment of those diseases.
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Affiliation(s)
- Y Akita
- Department of Pathology, Aichi Medical University School of Medicine, Nagakute, Aichi 480-1195, Japan
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Tanizawa Y, Johna N, Yamamoto Y, Nishikawa N. Salivary films on hydroxyapatite studied by an in vitro system for investigating the effect of metal ions and by a quartz-crystal microbalance system for monitoring layer-by-layer film formation. J Cosmet Sci 2004; 55:163-76. [PMID: 15131728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Accepted: 01/26/2004] [Indexed: 04/29/2023]
Abstract
The salivary film or the acquired pellicle is a protein film formed initially on the enamel surface of teeth. Such a film plays an important role in enamel protection, but is also an initial substructure for the formation of plaque and the cosmetically undesirable colored stain. The composition and the structure of the film are still essentially unknown because of the difficulty of its isolation for characterization. The purpose of this study was to investigate the effect of some metal cations on the salivary film or the pellicle formation, and also to clarify the mechanism of development. First, using infrared spectroscopy (IR) and X-ray photoelectron spectroscopy (XPS), the in situ-formed film in the mouth was confirmed to contain selectively adsorbed well-known proteins. Then, in vitro studies have demonstrated that Ca2+ ions enhance film formation at the initial stage in virtue of Ca bridging and, interestingly, that Mg2+ ions oppositely inhibit the formation. Furthermore, the quartz-crystal microbalance (QCM), utilized successfully for the first time to study the salivary film, has shown the possibility of an alternate accumulation mechanism by which the surface charges on the film are effectively reversed by the opposite charged proteins.
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Affiliation(s)
- Y Tanizawa
- Analytical Research Center, Lion Corporation, Hirai, Edogawa-ku, Tokyo 132-0035, Japan
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Tanemura M, Suzumori K, Nishikawa N, Ishihara Y. Multicolour spectral karyotyping for complex chromosomal rearrangements in repeated abortion or congenital anomalies. Prenat Diagn 2001; 21:1123-8. [PMID: 11787036 DOI: 10.1002/pd.183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Advances in molecular cytogenetics, especially the technique of fluorescence in situ hybridization (FISH), have allowed more precise definition of chromosomal structures, which are difficult to identify using conventional G-banding. Recently, a novel approach based on hybridization of 24 fluorescent-labelled chromosome painting probes was developed, termed spectral karyotyping (SKY), which allows the simultaneous and differential colour display of all human chromosomes. We have used SKY to identify not only five parental complex translocation carriers but also minute chromosome rearrangements in the fetus. Here, we concentrate attention on the clinical application of SKY for prenatal diagnosis.
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Affiliation(s)
- M Tanemura
- Department of Obstetrics and Gynaecology, Nagoya City University Medical School, Nagoya, Japan
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