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Chuwa AH, Sone K, Oda K, Tanikawa M, Kukita A, Kojima M, Oki S, Fukuda T, Takeuchi M, Miyasaka A, Kashiyama T, Ikeda Y, Nagasaka K, Mori-Uchino M, Matsumoto Y, Wada-Hiraike O, Kuramoto H, Kawana K, Osuga Y, Fujii T. Kaempferol, a natural dietary flavonoid, suppresses 17β-estradiol-induced survivin expression and causes apoptotic cell death in endometrial cancer. Oncol Lett 2018; 16:6195-6201. [PMID: 30333884 DOI: 10.3892/ol.2018.9340] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 04/01/2018] [Accepted: 07/30/2018] [Indexed: 01/07/2023] Open
Abstract
Endometrioid endometrial carcinoma, commonly known as type 1 endometrial cancer, accounts for >80% of endometrial carcinomas and is dependent on estrogen. We recently reported on the prognostic significance of the BIRC5 survivin gene in endometrial cancer. Estradiol induces survivin expression in estrogen receptor-positive, but not in estrogen receptor-negative, cancer cells. Kaempferol, a bioflavonoid, reportedly inhibits estrogen receptor-α (ERα) in hormone receptor-positive breast cancer cells. However, whether kaempferol-mediated inhibition of ERα suppresses survivin and induces cell death in endometrial cancer remains unclarified. The present study evaluated the antitumor effects of kaempferol on endometrial cancer cells. Cell viability assays, flow cytometry analysis, western blotting and annexin V analyses were used to analyze the antitumor effects of kaempferol. The results demonstrated that kaempferol successfully suppressed the viability of two ER-positive endometrial cancer cell lines, with IC50 values of 83 and 65 µM. In addition, kaempferol induced sub-G1 cell accumulation and apoptotic cell death (P<0.01) in a dose-dependent manner. Treatment of cells with estradiol significantly induced co-expression of nuclear ERα and survivin proteins (P<0.001). Further evaluation revealed that kaempferol causes apoptotic cell death largely by suppressing ERα, survivin and Bcl-2 protein. Therefore, the results of the present study suggested that targeting ERα and survivin with kaempferol may be a novel therapeutic option against endometrial carcinoma.
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Affiliation(s)
- Agapiti Hipoliti Chuwa
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Asako Kukita
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Machiko Kojima
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Shinya Oki
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Tomohiko Fukuda
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Makoto Takeuchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Aki Miyasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoko Kashiyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Kazunori Nagasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Mayuyo Mori-Uchino
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Yoko Matsumoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | | | - Kei Kawana
- Department of Obstetrics and Gynecology, Nihon University, Tokyo 173-8610, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo 113-8655, Japan
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Oki S, Sone K, Oda K, Hamamoto R, Ikemura M, Maeda D, Takeuchi M, Tanikawa M, Mori-Uchino M, Nagasaka K, Miyasaka A, Kashiyama T, Ikeda Y, Arimoto T, Kuramoto H, Wada-Hiraike O, Kawana K, Fukayama M, Osuga Y, Fujii T. Oncogenic histone methyltransferase EZH2: A novel prognostic marker with therapeutic potential in endometrial cancer. Oncotarget 2018; 8:40402-40411. [PMID: 28418882 PMCID: PMC5522273 DOI: 10.18632/oncotarget.16316] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [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: 08/15/2016] [Accepted: 02/17/2017] [Indexed: 01/20/2023] Open
Abstract
The histone methyltransferase EZH2, a key epigenetic modifier, is known to be associated with human tumorigenesis. However, the physiological importance of EZH2 and its clinical relevance in endometrial cancer remain unclear. Hence, in the present study, we investigated the expression and function of EZH2 in endometrial cancer. In a quantitative real-time PCR analysis of 11 endometrial cancer cell lines and 52 clinical endometrial cancer specimens, EZH2 was significantly overexpressed in cancer cells and tissues compared to that in corresponding normal control cells and tissues. Kaplan-Meier survival analysis using data of the TCGA RNA-seq database and tissue microarrays (TMAs) indicated that EZH2 overexpression is associated with endometrial cancer prognosis. In addition, knockdown of EZH2 using specific siRNAs resulted in growth suppression and apoptosis induction of endometrial cancer cells, accompanied by attenuation of H3K27 trimethylation. Consistent with these results, treatment with GSK126, a specific EZH2 inhibitor, suppressed endometrial cancer cell growth and decreased the number of cancer cell colonies. Furthermore, GSK126 showed additive effects with doxorubicin or cisplatin, which are conventional drugs for treatment of endometrial cancer. Further studies should explore the therapeutic potential of inhibiting EZH2 in patients with endometrial cancer.
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Affiliation(s)
- Shinya Oki
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Ryuji Hamamoto
- Division of Molecular Modification and Cancer Biology, National Cancer Center Research Institute, Tokyo 104-0045, Japan
| | - Masako Ikemura
- Department of Pathology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Daichi Maeda
- Department of Pathology, Faculty of Medicine, Akita University, Akita 010-8543, Japan
| | - Makoto Takeuchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Mayuyo Mori-Uchino
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Kazunori Nagasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Aki Miyasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoko Kashiyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Takahide Arimoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Hiroyuki Kuramoto
- Center for Female Preventive Medicine, Kanagawa Health Service Association, Naka-ku, Yokohama, Kanagawa 231-0021, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Kei Kawana
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Masashi Fukayama
- Department of Pathology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
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Shimizuguchi T, Nihei K, Ito K, Ogawa H, Kawamoto T, Kuramoto H, Hayakawa S, Fuse K, Shibata Y, Machitori Y, Fujii M, Karasawa K. Herpes Zoster Following Radiation Therapy: A Single-Institutional Epidemiological Analysis from Patient Database. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1833] [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: 11/25/2022]
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Kuramoto H, Iwami Y, Sugimoto N, Miyagawa J, Banno M, Iida M. Cytological Characteristics of Endometrial Phasing Using the Specimens Prepared with the Liquid-Based Procedure: Comparison with the Conventional Procedure. Acta Cytol 2016; 60:429-437. [PMID: 27701154 DOI: 10.1159/000448872] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 08/02/2016] [Indexed: 12/29/2022]
Abstract
OBJECTIVE To evaluate whether or not the liquid-based procedure (LBP) for endometrial cytology is as worthwhile for endometrial phasing as conventional slides. MATERIALS AND METHODS The subjects were 81 women who underwent endometrial cytology and were defined as negative. The specimens obtained by either Endocyte® or Masubuchi aspiration tube® were processed first with the conventional procedure and then with LBP using TACAS™. RESULTS (1) The number of subjects diagnosed by the conventional method as having proliferative, mid-, middle-secretory and late-secretory and atrophic phases was 40, 11, 10, 0 and 20, respectively. The rate of agreement with those using LBP was 87.7%. (2) Incidences of large clusters, ductal clusters, palisade arrangement, uneven staining and dirty mucous background detected were significantly higher with the conventional method, whereas with LBP clean background, inconspicuous bonding of cells, scattered solitary glandular cells, clear well-stained cytoplasm and cell compactness were higher. (3) Especially in the proliferative phase, clusters tended to be smaller and lose their architectural structures, and scattered solitary columnar cells were present. (4) Cells in the mid-phase tended to have loose contact and to mimic other phases. CONCLUSIONS Cytodiagnosis of endometrial phasing prepared with LBP is feasible to perform when some modifications are implemented.
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Affiliation(s)
- Hiroyuki Kuramoto
- Department of Cancer Detection for Females, The Kanagawa Health Service Association, Yokohama, Japan
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Morikawa T, Ninomiya K, Kuramoto H, Kamei I, Yoshikawa M, Muraoka O. Phenylethanoid and phenylpropanoid glycosides with melanogenesis inhibitory activity from the flowers of Narcissus tazetta var. chinensis. J Nat Med 2016; 70:89-101. [PMID: 26475459 DOI: 10.1007/s11418-015-0941-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 09/18/2015] [Indexed: 11/29/2022]
Abstract
A methanol extract of the flowers of Narcissus tazetta var. chinensis Roem. (Amaryllidaceae) demonstrated inhibitory effects on melanogenesis in theophylline-stimulated murine B16 melanoma 4A5 cells. From the extract, four new phenylethanoid glycosides, tazettosides A–D (1–4), and a new phenylpropanoid glycoside, tazettoside E (5), were isolated along with 23 known compounds (6–28). Of the isolates, 1 (IC50 = 22.0 μM) and 4 (82.5 μM), 3-methoxy-8,9-methylenedioxy-3,4-dihydrophenanthridine (13, IC50 = 28.5 μM), 5,6-dihydrobicolorine (14, 23.7 μM), tazettine (16, 60.8 μM), benzyl β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (18, 27.8 μM), 2-(3,4-dimethoxyphenyl)ethyl β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (21, 74.6 μM), 3-phenylpropyl β-D-glucopyranoside (22, 59.0 μM), and cinnamyl β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside (24, 88.0 μM) showed inhibitory effects without notable cytotoxicity at the effective concentrations.
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Chuwa AH, Sone K, Oda K, Ikeda Y, Fukuda T, Wada-Hiraike O, Inaba K, Makii C, Takeuchi M, Oki S, Miyasaka A, Kashiyama T, Arimoto T, Kuramoto H, Kawana K, Yano T, Osuga Y, Fujii T. Significance of survivin as a prognostic factor and a therapeutic target in endometrial cancer. Gynecol Oncol 2016; 141:564-569. [PMID: 27079211 DOI: 10.1016/j.ygyno.2016.04.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 03/31/2016] [Accepted: 04/02/2016] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Survivin is an anti-apoptotic protein encoded by the baculoviral inhibitor of apoptosis repeat-containing (BIRC5) gene and is upregulated in 83% of endometrial cancers. We aimed to elucidate the prognostic importance of BIRC5 expression, and evaluate survivin as a therapeutic target for endometrial cancer, by knock-down of BIRC5 and using the survivin inhibitor-YM155. METHODS RNA sequencing data in 234 patients with endometrial carcinoma was obtained from The Cancer Genome Atlas database, and analyzed using Kaplan-Meier method, log-rank test and Cox proportional hazard model. Expressions of survivin in 16 endometrial cancer cell lines were analyzed by western blotting. Knocking down effect on survivin expression was evaluated using a small interfering RNA (siRNA). The anti-proliferative and pro-apoptotic effects of YM155 were assessed with cell viability, flow cytometry, and annexin V/propidium iodide assays. RESULTS High expression of BIRC5 was associated with poor progression free survival (P=0.006), and shown to be an independent prognostic factor (HR=1.97, 95% CI=1.29-4.5, P=0.045). Survivin was upregulated in 14 of 16 (87.5%) endometrial cancer cell lines, compared with endometrial immortalized cells. Apoptosis was induced by knockdown of BIRC5 in all 3 cell lines examined. YM155 showed increased population of sub-G1 cells (P<0.001) in all 16 cell lines, and IC50 values to YM155 were <50nm in 15 cell lines. YM155 dose-dependently and significantly increased the apoptotic cell population in all 16 cell lines (P<0.001). CONCLUSIONS Present study indicated that survivin expression is a significant prognostic factor and that survivin is a promising therapeutic target for endometrial cancer.
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Affiliation(s)
- Agapiti Hipoliti Chuwa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan.
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Tomohiko Fukuda
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Kanako Inaba
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Chinami Makii
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Makoto Takeuchi
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Shinya Oki
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Aki Miyasaka
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Tomoko Kashiyama
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Takahide Arimoto
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | | | - Kei Kawana
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Tetsu Yano
- Department of Obstetrics and Gynecology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo, Tokyo 113-8655, Japan
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Karasawa K, Ito K, Shibata Y, Hayakawa S, Tanaka H, Shimizuguchi T, Machitori Y, Fujii M, Nihei K, Fuse K, Kawamoto T, Kuramoto H. EP-1211: Prognostic factors in patients with Stage I NSCLC treated with 3-D noncoplanar conformal RT. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)32461-6] [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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Morikawa T, Ninomiya K, Akaki J, Kakihara N, Kuramoto H, Matsumoto Y, Hayakawa T, Muraoka O, Wang LB, Wu LJ, Nakamura S, Yoshikawa M, Matsuda H. Dipeptidyl peptidase-IV inhibitory activity of dimeric dihydrochalcone glycosides from flowers of Helichrysum arenarium. J Nat Med 2015; 69:494-506. [PMID: 25921859 PMCID: PMC4703617 DOI: 10.1007/s11418-015-0914-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 02/10/2015] [Accepted: 04/09/2015] [Indexed: 12/11/2022]
Abstract
A methanol extract of everlasting flowers of Helichrysum arenarium L. Moench (Asteraceae) was found to inhibit the increase in blood glucose elevation in sucrose-loaded mice at 500 mg/kg p.o. The methanol extract also inhibited the enzymatic activity against dipeptidyl peptidase-IV (DPP-IV, IC50 = 41.2 μg/ml), but did not show intestinal α-glucosidase inhibitory activities. From the extract, three new dimeric dihydrochalcone glycosides, arenariumosides V-VII (2-4), were isolated, and the stereostructures were elucidated based on their spectroscopic properties and chemical evidence. Of the constituents, several flavonoid constituents, including 2-4, were isolated, and these isolated constituents were investigated for their DPP-IV inhibitory effects. Among them, chalconaringenin 2'-O-β-D-glucopyranoside (16, IC50 = 23.1 μM) and aureusidin 6-O-β-D-glucopyranoside (35, 24.3 μM) showed relatively strong inhibitory activities.
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Affiliation(s)
- Toshio Morikawa
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
- />Antiaging Center, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Kiyofumi Ninomiya
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
- />Antiaging Center, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Junji Akaki
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Namiko Kakihara
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Hiroyuki Kuramoto
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Yurie Matsumoto
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Takao Hayakawa
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Osamu Muraoka
- />Pharmaceutical Research and Technology Institute, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
- />Antiaging Center, Kinki University, 3-4-1 Kowakae, Higashi-osaka, Osaka 577-8502 Japan
| | - Li-Bo Wang
- />Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412 Japan
- />Faculty of Natural Medicines, Shenyang Pharmaceutical University, 103 Wenhua Rd., 110016 Shenyang, People’s Republic of China
| | - Li-Jun Wu
- />Faculty of Natural Medicines, Shenyang Pharmaceutical University, 103 Wenhua Rd., 110016 Shenyang, People’s Republic of China
| | - Seikou Nakamura
- />Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412 Japan
| | - Masayuki Yoshikawa
- />Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412 Japan
| | - Hisashi Matsuda
- />Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8412 Japan
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Inaba K, Oda K, Ikeda Y, Sone K, Miyasaka A, Kashiyama T, Fukuda T, Uehara Y, Arimoto T, Kuramoto H, Wada-Hiraike O, Kawana K, Yano T, Osuga Y, Fujii T. Antitumor activity of a combination of dual PI3K/mTOR inhibitor SAR245409 and selective MEK1/2 inhibitor pimasertib in endometrial carcinomas. Gynecol Oncol 2015; 138:323-31. [DOI: 10.1016/j.ygyno.2015.05.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 05/24/2015] [Accepted: 05/26/2015] [Indexed: 12/19/2022]
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Iwata T, Hasegawa T, Ochiai K, Takizawa K, Umezawa S, Kuramoto H, Ohmura M, Kubushiro K, Arai H, Sakamoto M, Motoyama T, Watanabe K, Aoki D. Human Papillomavirus Test for Triage of Japanese Women With Low-Grade Squamous Intraepithelial Lesions. Reprod Sci 2015; 22:1509-15. [DOI: 10.1177/1933719115589408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Takashi Iwata
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Toshihiko Hasegawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kazunori Ochiai
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Ken Takizawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Satoshi Umezawa
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroyuki Kuramoto
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Mineo Ohmura
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kaneyuki Kubushiro
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Hiroharu Arai
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Masaru Sakamoto
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Teiichi Motoyama
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Kayoko Watanabe
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Daisuke Aoki
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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Kuramoto H, Sugimoto N, Iwami Y, Kato C, Hori M, Iida M. Evaluation of a New Automated Processing System (TACAS™ Pro) for Liquid-Based Procedures. Acta Cytol 2015; 59:207-12. [PMID: 25925150 DOI: 10.1159/000381055] [Citation(s) in RCA: 5] [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: 10/28/2014] [Accepted: 02/17/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To evaluate a fully automated processing system (TACAS™ Pro) for liquid-based procedures (LBPs). METHODS AND MATERIALS Materials were 3,483 and additionally 502 specimens that were taken at Kanagawa Health Service Association. Specimens obtained with a Cervex-Brush® were first smeared to glass slides using one side of the brush and then processed to TACAS Pro. RESULTS (1) The microscopy watching time per normal case was 3.65 ± 0.85 min in the conventional procedure, whereas in the LBP it was 1.95 ± 0.60 min, and the latter reduced workload to 53%. (2) The handling time of TACAS Pro per day was 2 h and 25.8 min. The workload at a laboratory offset it and revealed the work saving to be 63.8%. (3) Unsatisfactory rates were 0% in the conventional procedure, whereas in the LBP it was 1.88% at first. The latter rate decreased to 0.5% after system improvement. (4) Specimens which may disturb microscopy analysis were found in 1.06%, including 3 cases of possible carry-over of cells to the following slides. An additional study with the revised system confirmed no carry-over. (5) Incidences of abnormal cytology were consistent between the two methods. CONCLUSIONS The revised automated processing system TACAS Pro is a feasible and useful LBP and reduces the workload of cytology laboratories.
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Affiliation(s)
- Hiroyuki Kuramoto
- Department of Cancer Detection for Females, Kanagawa Health Service Association, Yokohama, Japan
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Miyasaka A, Oda K, Ikeda Y, Sone K, Fukuda T, Inaba K, Makii C, Enomoto A, Hosoya N, Tanikawa M, Uehara Y, Arimoto T, Kuramoto H, Wada-Hiraike O, Miyagawa K, Yano T, Kawana K, Osuga Y, Fujii T. PI3K/mTOR pathway inhibition overcomes radioresistance via suppression of the HIF1-α/VEGF pathway in endometrial cancer. Gynecol Oncol 2015; 138:174-80. [PMID: 25913131 DOI: 10.1016/j.ygyno.2015.04.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/10/2015] [Indexed: 12/11/2022]
Abstract
Radiation therapy is a key therapeutic strategy for endometrial carcinomas. However, biomarkers that predict radiosensitivity and drugs to enhance this sensitivity have not yet been established. We aimed to investigate the roles of TP53 and MAPK/PI3K pathways in endometrial carcinomas and to identify appropriate radiosensitizing therapeutics. D10 values (the irradiating dose required to reduce a cell population by 90%) were determined in eight endometrial cancer cell lines with known mutational statuses for TP53, PIK3CA, and KRAS. Cells were exposed to ionizing radiation (2-6Gy) and either a dual PI3K/mTOR inhibitor (NVP-BEZ235) or a MEK inhibitor (UO126), and their radiosensitizing effects were evaluated using clonogenic assays. The effects of silencing hypoxia-inducible factor-1 α (HIF-1α) expression with small interfering RNAs (siRNAs) were evaluated following exposure to ionizing radiation (2-3Gy). D10 values ranged from 2.0 to 3.1Gy in three cell lines expressing wild-type TP53 or from 3.3 to more than 6.0Gy in five cell lines expressing mutant TP53. NVP-BEZ235, but not UO126, significantly improved radiosensitivity through the suppression of HIF-1α/vascular endothelial growth factor-A expression. HIF-1α silencing significantly increased the induction of the sub-G1 population by ionizing radiation. Our study data suggest that TP53 mutation and PI3K pathway activation enhances radioresistance in endometrial carcinomas and that targeting the PI3K/mTOR or HIF-1α pathways could improve radiosensitivity.
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Affiliation(s)
- Aki Miyasaka
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Yuji Ikeda
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Tomohiko Fukuda
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kanako Inaba
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Chinami Makii
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Atsushi Enomoto
- Laboratory of Molecular Radiology, Centre for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Noriko Hosoya
- Laboratory of Molecular Radiology, Centre for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yuriko Uehara
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Takahide Arimoto
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | | | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kiyoshi Miyagawa
- Laboratory of Molecular Radiology, Centre for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tetsu Yano
- Department of Obstetrics and Gynaecology, National Centre for Global Health and Medicine, Tokyo, Japan
| | - Kei Kawana
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynaecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan
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Miyasaka A, Oda K, Ikeda Y, Kashiyama T, Koso T, Inaba K, Fukuda T, Makii C, Asada K, Kurikawa R, Hiraike OW, Sone K, Uehara Y, Matsumoto Y, Arimoto T, Kuramoto H, Yano T, Kawana K, Osuga Y, Fujii T. Abstract 2402: Antitumor effect of a poly (ADP-ribose) polymerase (PARP) inhibitor in endometrial carcinoma cell lines. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-2402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The loss of PTEN is the most frequent genetic aberration in endometrial cancer. One of the phosphatase-independent roles of PTEN is associated with homologous recombination (HR) in the nucleus. Poly (ADP-ribose) polymerase (PARP) plays a key role in the repair of DNA single-strand breaks, and a PARP inhibitor induces synthetic lethality in cancer cells with HR deficiency. We examined the anti-tumor activity of olaparib, a PARP inhibitor, and its correlation between the sensitivity and status of PTEN in a panel of endometrial cancer cell lines.
Methods
The response to olaparib was evaluated using a clonogenic assay with SF50 values (concentration to inhibit cell survival to 50%) in 16 endometrial cancer cell lines. The effects of PTEN introduction on the sensitivity of cells to olaparib and ionizing radiation (IR) exposure were compared between parental HEC-6 (PTEN-null) and HEC-6 PTEN+ (stably expressing wild-type PTEN) cells by clonogenic assay, foci formation of RAD51 and γH2AX, and induction of cleaved PARP.
Results
The SF50 values were 100 nM or less in six of the 16 (38%: sensitive) cell lines; whereas, SF50 values were 1,000 nM or more in five of the 16 (31%: resistant) cell lines. PTEN mutations were not associated with sensitivity to olaparib (Mutant [n = 12]: 995 ± 1,096 nM; Wild-type [n = 4]: 144 ± 91 nM, p = 0.17 by Student'st test). RAD51 expression was observed broadly and was not associated with PTEN status in the 16 cell lines. The number of colonies in the clonogenic assay, the foci formation of RAD51 and γH2AX, and the induction of apoptosis were not affected by PTEN introduction in the HEC-6 PTEN+ cells. The expression level of nuclear PTEN was not elevated within 24 h following IR in the HEC-6-PTEN+ cells.
Conclusions
Our results suggest that olaparib, a PARP inhibitor, is effective on certain endometrial cancer cell lines. The inactivation of PTEN might not affect the DNA repair function. Predictive biomarkers are warranted to utilize olaparib in endometrial cancer.
Citation Format: Aki Miyasaka, Katsutoshi Oda, Yuji Ikeda, Tomoko Kashiyama, Takahiro Koso, Kanako Inaba, Tomohiko Fukuda, Chinami Makii, Kayo Asada, Reiko Kurikawa, Osamu Wada Hiraike, Kenbun Sone, Yuriko Uehara, Yoko Matsumoto, Takahide Arimoto, Hiroyuki Kuramoto, Tetsu Yano, Kei Kawana, Yutaka Osuga, Tomoyuki Fujii. Antitumor effect of a poly (ADP-ribose) polymerase (PARP) inhibitor in endometrial carcinoma cell lines. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 2402. doi:10.1158/1538-7445.AM2014-2402
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Fujii T, Saito M, Hasegawa T, Iwata T, Kuramoto H, Kubushiro K, Ohmura M, Ochiai K, Arai H, Sakamoto M, Motoyama T, Aoki D. Performance of p16INK4a/Ki-67 immunocytochemistry for identifying CIN2+ in atypical squamous cells of undetermined significance and low-grade squamous intraepithelial lesion specimens: a Japanese Gynecologic Oncology Group study. Int J Clin Oncol 2014; 20:134-42. [DOI: 10.1007/s10147-014-0688-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/15/2014] [Indexed: 11/24/2022]
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Miyasaka A, Oda K, Ikeda Y, Wada-Hiraike O, Kashiyama T, Enomoto A, Hosoya N, Koso T, Fukuda T, Inaba K, Sone K, Uehara Y, Kurikawa R, Nagasaka K, Matsumoto Y, Arimoto T, Nakagawa S, Kuramoto H, Miyagawa K, Yano T, Kawana K, Osuga Y, Fujii T. Anti-tumor activity of olaparib, a poly (ADP-ribose) polymerase (PARP) inhibitor, in cultured endometrial carcinoma cells. BMC Cancer 2014; 14:179. [PMID: 24625059 PMCID: PMC4007824 DOI: 10.1186/1471-2407-14-179] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 02/27/2014] [Indexed: 01/21/2023] Open
Abstract
Background PTEN inactivation is the most frequent genetic aberration in endometrial cancer. One of the phosphatase-independent roles of PTEN is associated with homologous recombination (HR) in nucleus. Poly (ADP-ribose) polymerase (PARP) plays key roles in the repair of DNA single-strand breaks, and a PARP inhibitor induces synthetic lethality in cancer cells with HR deficiency. We examined the anti-tumor activity of olaparib, a PARP inhibitor, and its correlation between the sensitivity and status of PTEN in endometrial cancer cell lines. Methods The response to olaparib was evaluated using a clonogenic assay with SF50 values (concentration to inhibit cell survival to 50%) in 16 endometrial cancer cell lines. The effects of PTEN on the sensitivity to olaparib and ionizing radiation (IR) exposure were compared between parental HEC-6 (PTEN-null) and HEC-6 PTEN + (stably expressing wild-type PTEN) cells by clonogenic assay, foci formation of RAD51 and γH2AX, and induction of cleaved PARP. The effects of siRNA to PTEN were analyzed in cells with wild-type PTEN. Results The SF50 values were 100 nM or less in four (25%: sensitive) cell lines; whereas, SF50 values were 1,000 nM or more in four (25%: resistant) cell lines. PTEN mutations were not associated with sensitivity to olaparib (Mutant [n = 12]: 746 ± 838 nM; Wild-type [n = 4]: 215 ± 85 nM, p = 0.26 by Student’s t test). RAD51 expression was observed broadly and was not associated with PTEN status in the 16 cell lines. The number of colonies in the clonogenic assay, the foci formation of RAD51 and γH2AX, and the induction of apoptosis were not affected by PTEN introduction in the HEC-6 PTEN + cells. The expression level of nuclear PTEN was not elevated within 24 h following IR in the HEC-6-PTEN + cells. In addition, knocking down PTEN by siRNA did not alter the sensitivity to olaparib in 2 cell lines with wild-type PTEN. Conclusions Our results suggest that olaparib, a PARP inhibitor, is effective on certain endometrial cancer cell lines. Inactivation of PTEN might not affect the DNA repair function. Predictive biomarkers are warranted to utilize olaparib in endometrial cancer.
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Affiliation(s)
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo 113-8655, Japan.
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Kuramoto H, Kadowaki M, Yoshida N. Morphological demonstration of a vagal inhibitory pathway to the lower esophageal sphincter via nitrergic neurons in the rat esophagus. Neurogastroenterol Motil 2013; 25:e485-94. [PMID: 23634870 DOI: 10.1111/nmo.12146] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 01/20/2013] [Accepted: 04/05/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND The involvement of vagal parasympathetic efferents in esophageal myenteric neurons in vagal inhibitory pathways to the lower esophageal sphincter (LES) is not clear. Thus, this study was performed to demonstrate morphologically the presence of vagal inhibitory pathways to the LES via esophageal neurons. METHODS Fast Blue (FB) was injected into the LES of Wistar rats, and 3 days after injection, the animals were subjected to electrical stimulation of the vagus nerve. The esophagus was processed for immunohistochemistry for Fos that was an immediate-early gene as a marker of neuronal activity, nitric oxide synthase (NOS), vasoactive intestinal polypeptide (VIP) and choline acetyltransferase (ChAT). The immunoreactivities were then compared with the FB labeling in esophageal neurons. KEY RESULTS Fast Blue-labeled neurons were observed within an esophageal area of 30 mm oral to the LES, with the highest frequency in the esophagus just above the LES. Most of the FB-labeled neurons were positive for NOS and VIP, but a few for ChAT. Following vagal-electrical stimulation, one fourth of the FB-labeled neurons presented nuclei expressing Fos and most of these Fos/FB neurons were NOS-positive. CONCLUSIONS & INFERENCES A majority of the FB-labeled esophageal neurons appeared to be descending motor neurons innervating the LES. Moreover, the colocalization of VIP and NOS in most of the LES-projecting neurons suggests that VIP and NO released from these neurons induce LES relaxation, and the innervation of the vagal efferents to the LES-projecting esophageal neurons in the distal esophagus implies a vagal inhibitory pathway responsible for LES relaxation.
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Affiliation(s)
- H Kuramoto
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto, Japan.
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Kuramoto H, Banno M, Hori M, Miyagawa J, Iida M, Kawaguchi M. Optimal sampling devices for liquid-based procedure in screening for cervical cancer: comparison between cotton stick/Cytobrush and Cervex-Brush. Acta Cytol 2013; 57:153-8. [PMID: 23406881 DOI: 10.1159/000345798] [Citation(s) in RCA: 5] [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] [Received: 08/27/2012] [Accepted: 11/08/2012] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To find an appropriate sampling device for a liquid-based procedure in the population screening for cervical cancer, focusing on bleeding at sampling and the amount of cells smeared. METHODS AND MATERIALS 1,000 consecutive women who underwent primary screening were studied. The specimens were obtained with the cotton stick/Cytobrush® method in the first 500 cases or with the Cervex-Brush® in the following 500 subjects, and were processed using the Thinlayer Advanced Cytology Assay System (TACAS™) following the manufacturer's instructions. RESULTS (1) Bleeding at cellular sampling using the cotton stick/Cytobrush and Cervex-Brush methods occurred in 1.2 and 8.8% of the cases, respectively (p < 0.0001). (2) The incidences of cells obtained with the two methods which covered the whole area, <1/2 and ≥1/4, and <1/4 of the observation fields were 55.4 versus 62.2% (p < 0.05), 14.6 versus 9.4% (p < 0.05), and 2.0 versus 4.0% (p < 0.05), respectively. (3) The incidences of endocervical or metaplastic cells obtained with ≥500 and <10 were 34.6 versus 20.0% (p < 0.01) and 9.4 versus 18.4% (p < 0.01), respectively. In cases of cells covering <1/4, incidences with <10 were 0 and 0.6% (n = 3), respectively. (4) Detection rates of abnormal cytology were 3.4 and 5.2% (n.s.), including atypical squamous cells of undetermined significance in 2.4 and 3.2%. CONCLUSIONS The cotton stick/Cytobrush is superior to the Cervex-Brush as a cellular sampling device for the TACAS liquid-based procedure.
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Affiliation(s)
- Hiroyuki Kuramoto
- Department of Cancer Detection for Females, Kanagawa Health Service Association, Yokohama, Japan.
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Shoji K, Oda K, Kashiyama T, Ikeda Y, Nakagawa S, Sone K, Miyamoto Y, Hiraike H, Tanikawa M, Miyasaka A, Koso T, Matsumoto Y, Wada-Hiraike O, Kawana K, Kuramoto H, McCormick F, Aburatani H, Yano T, Kozuma S, Taketani Y. Genotype-dependent efficacy of a dual PI3K/mTOR inhibitor, NVP-BEZ235, and an mTOR inhibitor, RAD001, in endometrial carcinomas. PLoS One 2012; 7:e37431. [PMID: 22662154 PMCID: PMC3360787 DOI: 10.1371/journal.pone.0037431] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [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] [Received: 01/16/2012] [Accepted: 04/19/2012] [Indexed: 11/19/2022] Open
Abstract
The PI3K (phosphatidylinositol-3-kinase)/mTOR (mammalian target of rapamycin) pathway is frequently activated in endometrial cancer through various PI3K/AKT-activating genetic alterations. We examined the antitumor effect of NVP-BEZ235—a dual PI3K/mTOR inhibitor—and RAD001—an mTOR inhibitor—in 13 endometrial cancer cell lines, all of which possess one or more alterations in PTEN, PIK3CA, and K-Ras. We also combined these compounds with a MAPK pathway inhibitor (PD98059 or UO126) in cell lines with K-Ras alterations (mutations or amplification). PTEN mutant cell lines without K-Ras alterations (n = 9) were more sensitive to both RAD001 and NVP-BEZ235 than were cell lines with K-Ras alterations (n = 4). Dose-dependent growth suppression was more drastically induced by NVP-BEZ235 than by RAD001 in the sensitive cell lines. G1 arrest was induced by NVP-BEZ235 in a dose-dependent manner. We observed in vivo antitumor activity of both RAD001 and NVP-BEZ235 in nude mice. The presence of a MEK inhibitor, PD98059 or UO126, sensitized the K-Ras mutant cells to NVP-BEZ235. Robust growth suppression by NVP-BEZ235 suggests that a dual PI3K/mTOR inhibitor is a promising therapeutic for endometrial carcinomas. Our data suggest that mutational statuses of PTEN and K-Ras might be useful predictors of sensitivity to NVP-BEZ235 in certain endometrial carcinomas.
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Affiliation(s)
- Keiko Shoji
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
- * E-mail:
| | - Tomoko Kashiyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shunsuke Nakagawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kenbun Sone
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuichiro Miyamoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Haruko Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Michihiro Tanikawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Aki Miyasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takahiro Koso
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoko Matsumoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kei Kawana
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Kuramoto
- Department of Clinical Cytology, Kitasato University Graduate School of Medical Sciences, Kanagawa, Japan
| | - Frank McCormick
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California, United States of America
| | - Hiroyuki Aburatani
- Genome Science Division, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan
| | - Tetsu Yano
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shiro Kozuma
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yuji Taketani
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Kuramoto H, Iwami Y, Sugimoto N, Kato C, Sugahara T, Iida M. Application of a new liquid-based procedure (TACAS) for the screening of cervical cancer: a preliminary study. Acta Cytol 2012; 56:74-9. [PMID: 22236749 DOI: 10.1159/000332971] [Citation(s) in RCA: 7] [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: 08/15/2011] [Accepted: 09/09/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To evaluate the usefulness of a new liquid-based cytological procedure in a population screening program for cervix cancer. SUBJECTS AND METHODS Subjects were 1,000 women who underwent primary screening at the Kanagawa Health Service Association. The cytological specimens obtained by either cotton stick and Cytobrush® or Cervex-Brush® were processed using the Thinlayer Advanced Cytology Assay System (TACAS™), following the manufacturer's instructions. RESULTS (1) Cells were evenly distributed on specimens and stained evenly; (2) shrinkage of cells was 5% based on measurement of the nuclear diameters of granulocytes in comparison with those of the conventional procedure; (3) incidences of cells that occupied the whole area, 1/20≤, 1/4≤, 1/4> of the observation fields were 58.8, 26.2, 12.0 and 3.0%, respectively; (4) number of the squamous cells in cases with 1/4> was <5,000, in which specimen cells were correctly obtained from the squamocolumnar junction except in 3 cases (0.3%); (5) bleeding at cellular sampling was 5%, but did not disturb cell analysis; (6) inflammation caused by organisms was easily diagnosed; (7) detection rate of abnormal cytology was 4.3%, including ASC-US in 2.8% and ASC-H in 0.1%. CONCLUSION TACAS is a feasible and useful cytological procedure.
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Affiliation(s)
- Hiroyuki Kuramoto
- Department of Cancer Detection for Females, Kanagawa Health Service Association, Yokohama, Japan.
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Yoshino S, Sasahara M, Hutamekalin P, Yamaki K, Mizutani N, Kuramoto H. Suppression of antibody-mediated arthritis in mice by Fab fragments of the mediating antibodies. Br J Pharmacol 2011; 161:1351-60. [PMID: 20946119 DOI: 10.1111/j.1476-5381.2010.00938.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Fab fragments (Fabs) of antibodies maintain the ability to bind specific antigens, but lack the binding site for complement as well as the site for binding to receptors on effector cells, such as macrophages that play an important role in inflammation. In the present study, we investigated whether Fabs specific for ovalbumin (OVA) were specifically able to suppress anti-OVA antibody-mediated arthritis (AOA-MA) in mice. EXPERIMENTAL APPROACH AOA-MA was induced by i.v. injection of purified anti-OVA antibodies into naïve mice followed by intra-articular (left ankle) challenge with the antigen. Anti-OVA Fabs prepared by digestion of anti-OVA antibodies with papain were injected i.v. immediately after administration of the intact antibodies. Normal Fabs were used as a control. Arthritis was assessed by thickness of the joints (caliper) and by histology of paw sections, stained with haematoxylin and eosin. KEY RESULTS AOA-MA was markedly suppressed by anti-OVA Fabs, but not by control Fabs. Histologically, mice treated with control Fabs showed marked oedema of synovial tissues with a large number of inflammatory cells including neutrophils, whereas animals given anti-OVA Fabs had mild oedema of the synovium and sparse infiltration of such cells. The antigen-specific suppression of joint inflammation by anti-OVA Fabs was associated with reduced consumption of complement. In vitro studies showed that anti-OVA Fabs significantly blocked the binding of intact anti-OVA antibodies to OVA. CONCLUSIONS AND IMPLICATIONS Antibody-mediated arthritis appears to be specifically down-regulated by Fabs that competitively inhibit the binding of antibodies to antigens.
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Affiliation(s)
- S Yoshino
- Department of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan.
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Oda K, Shoji K, Nakagawa S, Kashiyama T, Ikeda Y, Miyamoto Y, Tanikawa M, Kuramoto H, Nishida M, Hiraike-Wada O, Yano T, Kozuma S, Taketani Y. Genotype-dependent efficacy of a dual PI3K/mTOR inhibitor, NVP-BEZ235, and an mTOR inhibitor, RAD001, in endometrial carcinomas. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Shoji K, Oda K, Nakagawa S, Ikeda Y, Kashiyama T, Miyamoto Y, Tanikawa M, Kuramoto H, Hiraike-Wada O, Yano T, Taketani Y. Abstract 4494: In vivo antitumor activity of NVP-BEZ235, a dual PI3K/mTOR inhibitor, and RAD001 (everolimus), an mTOR inhibitor, in endometrial cancer. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-4494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose; PI3K (phosphatidylinositol-3-kinase) and its downstream mTOR (mammalian target of rapamycin) pathway play a critical role in diverse cellular functions, including proliferation, growth and cell survival. PI3K-mTOR pathway is frequently activated in endometrial cancer through various PI3K/AKT activating genetic alterations, such as mutations in PTEN, PIK3CA, and K-Ras. It has not been well analyzed whether mTOR inhibition alone is as effective as dual PI3K/mTOR inhibition to cancer cells with the activating PI3K pathway mutations, especially in vivo. In this study, we compared in vivo anti-tumor activity of a dual PI3K.inhibitor, NVP-BEZ235, with an mTOR inhibitor, RAD001, in endometrial cancer cell lines with the PI3K/AKT activating mutations.Experimental procedure; We screened 13 endometrial cancer cell lines, 11 of which possess one or more PI3K/AKT activating mutations. Among them, we selected two cell lines; AN3CA with a nonsense mutation in PTEN, and Hec-59 with double mutations in PIK3CA and PTEN. The IC50 values for cell proliferation by RAD001 were 14nM in AN3CA and 220nM in Hec-59, whereas the values by NVP-BEZ235 were 20nM in AN3CA and 24nM in Hec-59. We examined the effect of RAD001 (2.5mg/kg/day) and BEZ235 (40mg/kg/day) on tumor growth in vivo, using mice inoculated with endometrial cancer cells. We analyzed the phosphorylation levels of Akt, FOXO, GSK3beta and S6 in the tumors by immunoblotting. Results;Both BEZ and RAD001, compared with placebo, significantly suppressed the tumor growth in xenograft mice in the two cell lines. No significant adverse effects were observed with either compounds in any of the mice. Inconsistent with the in vitro data, the effect was comparable between BEZ235 and RAD001 even in Hec-59 cells, although the IC50 value was much higher with RAD001 than NVP-BEZ235. In Hec-59, NVP-BEZ235 clearly suppressed all the phosphorylation level of Akt, FOXO, GSK3beta and S6 in one hour from the treatment. However, all the phosphorylation levels were completely recovered to the base level within 24 hours. RAD001 clearly suppressed the p-S6 level in 1 hour and the effect partly remained even after 24 hours from the treatment. Conclusion; We demonstrated that both NVP-BEZ235 and RAD001 suppressed tumor growth in vivo in endometrial cancer cell lines with PIK3CA and/or PTEN mutations. The comparable effect of NVP-BEZ235 and RAD001 might be explained by the recovery of the phosphorylation levels of the target proteins, such as p-Akt, suggesting that sufficient suppression of the PI3K/mTOR pathway for full time-course might be required to robustly induce the anti-tumor effect by these inhibitors. In clinical trials, both pharmacokinetic and pharmacodinamic analyses would be important to appropriately assess the effect of these inhibitors.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 4494. doi:10.1158/1538-7445.AM2011-4494
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Kuramoto H, Sugimoto N, Iida M. Screening for cancer of the cervix with simultaneous pap smear and colposcopy. The efficacy of pap smear and colposcopy. EUR J GYNAECOL ONCOL 2011; 32:73-76. [PMID: 21446330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE Some Japanese institutes have been performing a population screening program for cervix cancer involving the simultaneous use of Pap smear and colposcopy. This program may be a good model for evaluating the efficacy of Pap smears and colposcopy. METHODS & MATERIALS The subjects included 2,000 women who underwent primary screening at the Kanagawa Health Service Association. RESULTS 1) The incidence of ACF (atypical colposcopic findings) was 3.6%, whereas that of abnormal Pap smears (ASC-US and above) was 1.1%; 2) Of 88 women who showed abnormal findings on Pap smear and/or colposcopy, only three cases appeared abnormal in both methods, i.e., the two methods were complementary; 3) Colposcopy was more useful for detecting mild dysplasia than the Pap smear. However, colposcopy may possibly detect benign reparatory lesions; 4) The incidence of unsatisfactory colposcopic findings (UCF) was high (24.2%), whereas no unsatisfactory cases were found by Pap smear. CONCLUSIONS The sensitivity of the Pap smear for detecting mild dysplasia is low, whereas that of colposcopy is high. However, colposcopy may not be suitable for primary screening due to its high UCF. The low sensitivity of Pap smears may be improved by repetition or adding ancillary HPV testing.
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Affiliation(s)
- H Kuramoto
- Department of Cancer Detection for FemalesThe Kanagawa Health Service Association, Kanagawa, Japan.
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Hirayama H, Shiina T, Shima T, Kuramoto H, Takewaki T, B Furness J, Shimizu Y. Contrasting effects of ghrelin and des-acyl ghrelin on the lumbo-sacral defecation center and regulation of colorectal motility in rats. Neurogastroenterol Motil 2010; 22:1124-31. [PMID: 20584261 DOI: 10.1111/j.1365-2982.2010.01553.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND We have previously demonstrated that a centrally penetrant ghrelin receptor agonist enhances colorectal motility, through activation of the lumbo-sacral defecation center (L6-S1 region of the spinal cord) in rats. In the present study, we examined the effects of the native peptide and its non-acylated counterpart in eliciting this stimulatory effect on colorectal motility. METHODS Rats were anesthetised with α-chloralose and ketamine, and colorectal intraluminal pressure and propelled intraluminal liquid volume were recorded in vivo. KEY RESULTS Intrathecal application of acylated ghrelin to the L6-S1 region of the spinal cord, but not intravenous application, elicited groups of phasic increases in colorectal intraluminal pressure that were associated with increased fluid output through the anal cannula. The effect was dose-dependent. The colokinetic effects of ghrelin were prevented if the pelvic nerves were severed. Reverse transcription polymerase chain reaction revealed the expression of the ghrelin and ghrelin receptor genes in the lumbo-sacral spinal cord. In contrast to acylated ghrelin, des-acyl ghrelin failed to cause changes in colorectal motility. However, when des-acyl ghrelin and ghrelin were applied simultaneously at the L6-S1 region, the ghrelin-induced enhancement of colorectal motility was significantly attenuated. CONCLUSION & INFERENCES It is concluded that acylation of the ghrelin peptide is essential to promote propulsive contractions of the colorectum and that des-acyl ghrelin opposes this effect. At most other sites of ghrelin action, des-acyl ghrelin either has no effect or it mimics ghrelin. This is the first evidence that non-acylated ghrelin opposes the action of the acylated peptide in the spinal cord.
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Affiliation(s)
- H Hirayama
- Laboratory of Physiology, Department of Basic Veterinary Science, The United Graduate School of Veterinary Sciences, Gifu University, Yanagido, Gifu, Japan
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Shoji K, Oda K, Nakagawa S, Ikeda Y, Kuramoto H, Nishida M, Kawana K, Yano T, Kozuma S, Taketani Y. Activity of dual PI3K/mTOR inhibitor, NVP-BEZ235, and mTOR inhibitor, RAD001 (everolimus), in endometrial cancer cell lines. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.5074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Watanabe J, Nishimura Y, Tsunoda S, Kawaguchi M, Okayasu I, Kuramoto H. Liquid-based preparation for endometrial cytology--usefulness for predicting the prognosis of endometrial carcinoma preoperatively. Cancer 2009; 117:254-63. [PMID: 19562745 DOI: 10.1002/cncy.20035] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND The authors evaluated the applicability and usefulness of immunocytochemical staining for cyclin A, p53, estrogen receptor alpha (ER-alpha), and progesterone receptor B (PR-B) as a preoperative prognostic indicators for endometrial carcinoma using endometrial cytology with the liquid-based cytology (LBC) method. METHODS Cytologic specimens from 44 patients who had endometrial carcinoma were prepared with the LBC method. The results of immunocytochemical and immunohistochemical staining for cyclin A, p53, ER-alpha, and PR-B were compared with clinicopathologic parameters and prognosis. RESULTS Patients who had positive results for cyclin A and p53 and negative results for ER-alpha and PR-B appeared to have unfavorable clinicopathologic characteristics, such as high-grade histology, advanced clinical stage, lymphovascular space involvement (LVSI), and deeper myometrial invasion (MI), and had a poor prognosis. In contrast, patients who had positive results for ER-alpha and PR-B, and negative results for cyclin A and p53 had favorable characteristics, such well differentiated tumor, early clinical stage, negative LVSI, and less MI, and had a good prognosis. Immunostaining results from cytologic specimens obtained in the clinic and at surgery and from histologic specimens obtained at surgery were correlated positively. CONCLUSIONS Consistent specimens that were prepared using the LBC method facilitated multiple immunocytochemical analyses. Endometrial cytology with the LBC method was useful for predicting the prognosis of patients with endometrial carcinoma before therapy.
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Affiliation(s)
- Jun Watanabe
- Department of Clinical Cytology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Kanagawa, Japan.
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Shoji K, Oda K, Nakagawa S, Hosokawa S, Nagae G, Uehara Y, Sone K, Miyamoto Y, Hiraike H, Hiraike-Wada O, Nei T, Kawana K, Kuramoto H, Aburatani H, Yano T, Taketani Y. Reply: Somatic mutations are present in all members of the AKT family in endometrial carcinoma. Br J Cancer 2009. [PMCID: PMC2768096 DOI: 10.1038/sj.bjc.6605302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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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Hirayama H, Toda T, Shiina T, Kuramoto H, Takewaki T, Furness J, Shimizu Y. P4.3 Antagonistic effects of des-acyl ghrelin and obestatin on ghrelin-induced enhancement of colorectal motility at the lumbo-sacral defecation center in rats. Auton Neurosci 2009. [DOI: 10.1016/j.autneu.2009.05.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shoji K, Oda K, Nakagawa S, Hosokawa S, Nagae G, Uehara Y, Sone K, Miyamoto Y, Hiraike H, Hiraike-Wada O, Nei T, Kawana K, Kuramoto H, Aburatani H, Yano T, Taketani Y. The oncogenic mutation in the pleckstrin homology domain of AKT1 in endometrial carcinomas. Br J Cancer 2009; 101:145-8. [PMID: 19491896 PMCID: PMC2713716 DOI: 10.1038/sj.bjc.6605109] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [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: 12/30/2022] Open
Abstract
Background: The phosphatidylinositol 3′-kinase (PI3K)–AKT pathway is activated in many human cancers and plays a key role in cell proliferation and survival. A mutation (E17K) in the pleckstrin homology domain of the AKT1 results in constitutive AKT1 activation by means of localisation to the plasma membrane. The AKT1 (E17K) mutation has been reported in some tumour types (breast, colorectal, ovarian and lung cancers), and it is of interest which tumour types other than those possess the E17K mutation. Methods: We analysed the presence of the AKT1 (E17K) mutation in 89 endometrial cancer tissue specimens and in 12 endometrial cancer cell lines by PCR and direct sequencing. Results: We detected two AKT1 (E17K) mutations in the tissue samples (2 out of 89) and no mutations in the cell lines. These two AKT1 mutant tumours do not possess any mutations in PIK3CA, PTEN and K-Ras. Interpretation: Our results and earlier reports suggest that AKT1 mutations might be mutually exclusive with other PI3K–AKT-activating alterations, although PIK3CA mutations frequently coexist with other alterations (such as HER2, K-Ras and PTEN) in several types of tumours.
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Affiliation(s)
- K Shoji
- Department of Obstetrics and Gynecology, The University of Tokyo, Tokyo, Japan
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Kuramoto H, Hongo A, Liu YX, Ojima Y, Nakamura K, Seki N, Kodama J, Hiramatsu Y. Immunohistochemical evaluation of insulin-like growth factor I receptor status in cervical cancer specimens. Acta Med Okayama 2008; 62:251-9. [PMID: 18766208 DOI: 10.18926/amo/30944] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The insulin-like growth factor I receptor (IGF-IR) is exceptionally overexpressed in many cervical-cancer-derived cell lines. It is postulated that a decrease of p53 protein levels due to human papillomavirus (HPV) infection may contribute to the up-regulation of IGF-IR expression in cervical cancer cells because transcription of IGF-IR is strictly down-regulated by p53. To evaluate this fact in clinical cervical cancer specimens, we checked the expression levels and activated status of IGF-IR by immunohistochemistry. Formalin-fixed and paraffin-embedded specimens obtained by conization or hysterectomy were stained with anti-IGF-IR and with an antibody recognizing phosphorylated tyrosine at its c-terminus. The expression levels of IGF-IR were significantly high in cervical intraepithelial neoplasia (CIN) III and invasive cancer specimens. Phosphorylation of IGF-IR was promoted in all CIN and invasive cancer specimens, and its intensity was related to the promotion of lesions. Interestingly, IGF-IR overexpression was missing in the basal layer of CIN I and II lesions, whereas it was evenly distributed in CIN III and invasive cancer lesions. This IGF-IR overexpression pattern may be utilized in the diagnosis of HPV infection status in CIN lesions.
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Affiliation(s)
- Hiroyuki Kuramoto
- Department of Obstetrics and Gynecology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558,Japan
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Oda K, Okada J, Timmerman L, Rodriguez-Viciana P, Stokoe D, Shoji K, Taketani Y, Kuramoto H, Knight ZA, Shokat KM, McCormick F. PIK3CA Cooperates with Other Phosphatidylinositol 3′-Kinase Pathway Mutations to Effect Oncogenic Transformation. Cancer Res 2008; 68:8127-36. [DOI: 10.1158/0008-5472.can-08-0755] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Watanabe J, Kamata Y, Seo N, Okayasu I, Kuramoto H. Stimulatory effect of estrogen on the growth of endometrial cancer cells is regulated by cell-cycle regulators. J Steroid Biochem Mol Biol 2007; 107:163-71. [PMID: 17681750 DOI: 10.1016/j.jsbmb.2007.03.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2006] [Accepted: 03/30/2007] [Indexed: 11/18/2022]
Abstract
Estrogen is known as a major risk factor in tumorigenesis of the endometrium. The aim of this study is to establish stable estrogen-responsive endometrial cancer cell lines and to investigate the mechanism of estrogen action, focusing on cell-cycle regulation. Human wild-type estrogen receptor cDNA was transfected into endometrial cancer cells (Ishikawa) and estrogen-responsive cell lines were cloned. Their estrogen responsiveness was evaluated by the effect of estrogen on cellular growth and progesterone receptor expression. It was quantitatively estimated by immunocytochemistry or immunoblotting how the expression of cell-cycle regulators such as cyclin D1, cyclin E, Cyclin A, p53, p21 and p27 was regulated by estrogen. A cell line stably responsive to estrogen was established, and cells proliferated and the glandular structure was formed by estrogen stimulation. Cyclin D1 expression increased at 6-24h and cyclin A gradually increased until 48h of estrogen treatment compared with untreated cells. On the other hand, p53 and p21 expressions decreased at 6-24h, and p27 gradually decreased until 24h by estrogen. Our results show that the stimulatory effect of estrogen on cell proliferation may be regulated by the up-regulation of cyclin D1 and cyclin A, and down-regulation of p53, p21 and p27. This cell line is useful to clarify the molecular mechanism of estrogen action on endometrial cancer.
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Affiliation(s)
- Jun Watanabe
- Department of Pathology, Kitasato University School of Medicine, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan.
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Kobayashi M, Hattori M, Miyamoto T, Kakinuma H, Watanabe J, Iwabuchi K, Nishimura Y, Jobo T, Kuramoto H. Basement membrane-like substance in cytologic diagnosis in clear cell adenocarcinoma of the minor salivary gland of the palate. A case report. Acta Cytol 2007; 51:916-20. [PMID: 18077986 DOI: 10.1159/000325870] [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] [Indexed: 11/19/2022]
Abstract
BACKGROUND Clear cell adenocarcinoma (CCA) of the minor salivary gland accounts for < 1% of all tumors of the salivary gland. CASE A 32-year-old woman with a history of papillary carcinoma of the thyroid 1 year earlier complained of pain on the left side of the neck. After a detailed examination, the patient underwent the resection of a tumor located at the palate. Imprint cytology of the tumor revealed cohesive tumor cells of uniform size containing an abundant clear cytoplasm and round nuclei with extra but fine granular chromatin and conspicuous nucleoli. A basement membrane-like substance (BMS) was stained in light green with Papanicolaou staining and was positive for laminin with immunohistochemical staining. Histopathologic analysis confirmed the trabecular or nest-like arrangement of the cells with the clear cytoplasm and BMS substance surrounded by tumor cells, which were positive for laminin and AE1 immunohistochemically. CONCLUSION Although CCA of the palate is extremely rare, an accurate cytologic diagnosis can be made if the characteristic findings of CCA, including BMS, are imaged.
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Affiliation(s)
- Miho Kobayashi
- Department of Clinical Cytology, School of Allied Health Sciences, Kitasato University Hospital, Kanagawa, Japan
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Abstract
In the endometrium, angiogenesis plays important roles not only in tumor growth but also in the menstrual cycle. The purpose of the present paper was to investigate immunohistochemically the correlation between angiogenic factor expression and angiogenic score in normal and neoplastic endometrium. Immunohistochemical staining for vascular endothelial growth factor (VEGF), angiopoietin (Ang)-1, Ang2, Tie2, CD34 and CD105 was performed on formalin-fixed and paraffin-embedded tissues from 31 normal endometrium and 85 endometrial adenocarcinoma. VEGF, Ang1, Ang2 and Tie2 expression was localized in the cytoplasm of glandular and tumor cells. The levels of each angiogenic factor were different in the phases of the menstrual cycle and each layer of normal endometrium. In general, VEGF and Tie2 expression was higher in adenocarcinoma than in normal epithelial cells. Conversely, Ang1 and Ang2 expression was higher in normal epithelium than in adenocarcinoma. The angiogenic score (CD105/CD34) tended to be higher in the adenocarcinoma than in the normal epithelium. It is suggested that the angiogenic pathway and the role of these factors seem to differ between normal tissue and carcinoma of the endometrium.
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Affiliation(s)
- Mayumi Saito
- Department of Cytopathology, Graduate School of Health Sciences, Gunma University, Maebashi, Gunma 371-0847, Japan
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Obokata A, Watanabe J, Nishimura Y, Arai T, Kawaguchi M, Kuramoto H. Significance of matrix metalloproteinase-7 [correction of matrix metalloproteinase-2], -11 and tissue inhibitor of metalloproteinase-1 expression in normal, hyperplastic and neoplastic endometrium. Anticancer Res 2007; 27:95-105. [PMID: 17352221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
BACKGROUND Matrix metalloproteinase (MMP) and tissue inhibitor of metalloproteinase (TIMP) are key factors in the degradation of extracellular matrix and basement membranes. This study aimed to examine the expressions of MMP-7 and -11 and TIMP-1 in normal, hyperplastic and neoplastic endometrium and their correlation to clinicopathologic factors. PATIENTS AND METHODS Tissue samples of 40 normal endometria, 20 endometrial hyperplasias and 120 endometrial endometrioid adenocarcinomas were used for the study. Immunohistochemical staining for MMP-7 and -11 and TIMP-1 protein was performed on formalin-fixed and paraffin-embedded tissue samples. These expressions were represented as incidence of expression. RESULTS MMP-7 was highly expressed in the glands of the basal and functional layers during the proliferative and menstrual phases. MMP-11 expression in the gland of the basal layer and the stroma of the functional layer fluctuated during the menstrual cycle. TIMP-1 was highly expressed in the late secretory and menstrual phases. MMP-7 was expressed at significantly higher levels in endometrial hyperplasia than normal endometrium, whereas MMP-11 was expressed at lower levels. In endometrial adenocarcinoma, MMP-7, MMP-11 and TIMP-1 were expressed at the same levels as in hyperplasia. MMP-7 expression in endometrial carcinoma was correlated with myometrial invasion and estrogen receptor expression. The expression of MMP-7 in the adjacent stroma was associated with a poor prognosis. CONCLUSION MMP-7, MMP-11 and TIMP-1 expression may be regulated by the menstrual cycle, and related to the degradation and remodeling of the normal endometrium. MMP-7 expression might be a prognostic factor in endometrial carcinoma.
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Affiliation(s)
- Akane Obokata
- Department of Clinical Cytology, Graduate School of Medical Sciences, Kitasato University, Sagamihara, Kanagawa 228-8555, Japan
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Kuramoto H. Tell us about your lab. Acta Cytol 2006; 50:3-4. [PMID: 17017429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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37
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Watanabe J, Watanabe K, Jobo T, Kamata Y, Kawaguchi M, Imai M, Okayasu I, Kuramoto H. Significance of p27 as a predicting marker for medroxyprogesterone acetate therapy against endometrial endometrioid adenocarcinoma. Int J Gynecol Cancer 2006; 16 Suppl 1:452-7. [PMID: 16515645 DOI: 10.1111/j.1525-1438.2006.00418.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
We reported that p27 induced by medroxyprogesterone acetate (MPA) may be involved in the progestin-induced growth suppression of human endometrial adenocarcinoma cells. This study aimed at investigating whether p27 expression could be a predicting marker to evaluate the effectiveness of MPA therapy. The clinical responses of 15 patients with endometrial carcinoma treated with MPA were examined. p27 expression was evaluated by immunohistochemical staining. Percentage of positive nuclear staining was expressed as a strongly positive (SP) labeling index (LI). Before MPA treatment, SP LIs in the effective and noneffective groups were 22.6 +/- 14.3% and 9.1 +/- 9.2%. At 1-6 weeks in the MPA treatment, SP LIs increased in both groups and were significantly higher than those before the therapy. At 7-12 weeks, SP LIs in both groups decreased to the level of pretherapy. At 13-18 weeks, SP LIs in the effective group were 14.9 +/- 5.7%, whereas in the noneffective group, 1.1 +/- 2.0%. The former was significantly higher than the latter. p27 expression could predict the effectiveness of MPA treatment for endometrial carcinoma at an early stage of the 4-month period in MPA therapy and could be a useful predicting marker for MPA.
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Affiliation(s)
- J Watanabe
- Department of Pathology, Kitasato University School of Medicine, Sagamihara, Japan.
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Motohashi E, Kawauchi H, Endo H, Kondo H, Kitasato H, Kuramoto H, Majima M, Unno N, Hayashi I. Regulatory expression of lipoxin A4 receptor in physiologically estrus cycle and pathologically endometriosis. Biomed Pharmacother 2006; 59:330-8. [PMID: 15996849 DOI: 10.1016/j.biopha.2005.05.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 12/13/2022] Open
Abstract
Expression of receptors for prostaglandin (PG) and leukotriene (LT) has been reported to detect in endometrium and smooth muscle of uterus, suggesting involvement of these arachidonic metabolites in endometrial pathology and reproductive biology. Lipoxin (LX), which is produced by lipoxygenases from arachidonic acid, has been characterized as an anti-inflammatory lipid mediator. Biological actions of Lipoxin A4 (LXA4) are mediated through the specific receptor. In order to know roles of LXA4 in female genitalia, expression of LXA4 receptor mRNA was quantified by real-time polymerase chain reaction. Significantly higher expression of the receptor was detected in endometrium and myometrium than ovary in normal rats. Expression of the receptor in endometrium was increased at stage of proestrus cycle under physiological condition. Exogenous administration of progesterone into female rats significantly reduced the expression, while administration of estradiol or pregnant mare serum gonadotropin (PMSG) did not. Both, endometrium in experimental endometriosis induced in rats and the tissues from patients with ectopic endometriosis showed a higher expression of LXA4 receptor compared to the normal tissues. In contrast, expressions of BLT1 and BLT2, receptors for leukotriene B4, did not change in the endometriosis. These observations suggest a possible role of LXA4 and the receptor under physiological estrus cycle and pathological condition as endometriosis.
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Affiliation(s)
- E Motohashi
- Department of Obstetrics and Gynecology, Kitasato University School of Medicine, 1-15-1 Kitasato, Sagamihara-shi, Kanagawa 228-8555, Japan
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Saga Y, Imai M, Jobo T, Kuramoto H, Takahashi K, Konno R, Ohwada M, Suzuki M. Is peritoneal cytology a prognostic factor of endometrial cancer confined to the uterus? Gynecol Oncol 2006; 103:277-80. [PMID: 16678244 DOI: 10.1016/j.ygyno.2006.03.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2005] [Revised: 03/03/2006] [Accepted: 03/06/2006] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The goal of this study was to investigate whether intraoperative peritoneal cytology serves as a prognostic factor in patients with the endometrial cancer limited to the disease confined to the uterus. METHODS From patients with endometrial cancer treated at 2 facilities between 1988 and 2001, 307 patients were selected for retrospective investigation. To be included in this study, patients required (1) full surgical staging including total abdominal hysterectomy/bilateral salpingo-oophorectomy/retroperitoneal lymph node dissection/peritoneal cytology, (2) negative nodes, (3) disease localized to the uterus and (4) endometrioid subtype. RESULTS The median duration of the follow-up period was 61 months (25th to 75th percentiles: 45 to 92 months). Peritoneal cytology was positive in 32 patients (10.4%). The 5-year survival rate of peritoneal-cytology-positive patients was 87%, significantly lower than that (97%) of cytology-negative patients (P = 0.011). The relationship between the clinicopathological factors including peritoneal cytology and the prognosis was investigated by univariate analysis, and peritoneal cytology positivity, age of 60 years or older, histologic grade (Grades 2 and 3), myometrial invasion of 1/2 or more and vascular invasion were significant prognostic factors (P < 0.05 in all). On multivariate analysis of these factors, peritoneal cytology positivity and histologic grade (Grade 2 and 3) were independent prognostic factors (P < 0.05 each). CONCLUSIONS For the patients with endometrial cancer limited to the disease confined to the uterus in which accurate staging including retroperitoneal lymph node dissection was performed, peritoneal cytology may be an important prognostic factor.
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Affiliation(s)
- Yasushi Saga
- Department of Obstetrics and Gynecology, Jichi Medical University, Shimotsuke, Tochigi 329-0498, Japan
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40
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Tamura T, Jobo T, Watanabe J, Kanai T, Kuramoto H. Neuroendocrine features in poorly differentiated endometrioid adenocarcinomas of the endometrium. Int J Gynecol Cancer 2006; 16:821-6. [PMID: 16681768 DOI: 10.1111/j.1525-1438.2006.00419.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
This study aimed to clarify neuroendocrine features (NEF) in poorly differentiated (G3) endometrioid adenocarcinoma of the endometrium and to evaluate its prognostic significance. Forty cases with G3 carcinoma were investigated for NEF immunohistochemically. The histopathologic specimens were immunostained with chromogranin A, synaptophysin, and leu-7, using the labeled streptavidin-biotin method. The staining pattern was classified into diffuse, partial, or focal. The NEF was compared with clinicopathologic variables, including patients' survival. Chromogranin A was positive diffusely in 1 patient (2.5%), partially in 8 (20%), and focally in 13 (32.5%). Synaptophysin was positive diffusely in one (2.5%), partially in three (7.5%), and focally in nine (22.5%). Leu-7 was focally positive in 10 (25%) patients. The overall positive rate of the three neuroendocrine markers was 62.5%. A patient with diffusely positive staining for both chromogranin A and synaptophysin was diagnosed with neuroendocrine carcinoma. One or more neuroendocrine markers were positive in 25 cases (62.5%). Positive NEF was correlated with clinicopathologic parameters such as stage and myometrial invasion. The survival of the patients with positive NEF, especially with positive leu-7, was significantly lower than that without NEF. NEF was detected immunohistochemically in approximately 63% of the G3 carcinomas, and these patients had a poor prognosis.
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Affiliation(s)
- T Tamura
- Departments of Obstetrics and Gynecology and Pathology, School of Medicine, Kitasato University, Kanagawa, Japan
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41
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Arai T, Watanabe J, Kawaguchi M, Kamata Y, Nishimura Y, Jobo T, Kuramoto H. Clear cell adenocarcinoma of the endometrium is a biologically distinct entity from endometrioid adenocarcinoma. Int J Gynecol Cancer 2006; 16:391-5. [PMID: 16445664 DOI: 10.1111/j.1525-1438.2006.00494.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 11/28/2022] Open
Abstract
Clear cell adenocarcinoma (CCA) of the endometrium has a poor prognosis, although the biologic features of this rare tumor are not clear. In this study, we analyzed the expression of biologic markers relating to carcinogenesis, tumor growth, and progression. Thirteen cases of CCA were compared with cases of endometrioid adenocarcinoma (EMA) of the endometrium. Immunohistochemical staining for p53; Ki-67; cyclins A, D1, and E; E-cadherin; progesterone receptor (PR)-A and PR-B; P-glycoprotein; MLH1; and MSH2 was performed. Labeling indices of p53, Ki-67, and cyclins A, D1, and E in CCA were 46.4 +/- 24.3%, 52.1 +/- 20.5%, 37.9 +/- 21.4%, 12.3 +/- 27.9%, and 8.2 +/- 22.9%, respectively. E-cadherin was expressed in only 1 case (7.7%) of CCA, as compared to 39 cases (61.0%) of EMA. No CCAs were positive for PR-A and PR-B. P-glycoprotein was detected in seven cases (53.8%). Loss of either MLH1 or MSH2 expression occurred in eight cases (61.5%). High-level expression of p53, cyclin A, and P-glycoprotein, and low-level or no expression of cyclin E, E-cadherin, PR-A, and PR-B was observed in CCA compared with EMA. The mechanism of cell-cycle regulation in endometrial CCA is different from that in EMA and may influence its malignant potential. Endometrial CCA is a distinct entity from EMA.
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Affiliation(s)
- T Arai
- Department of Clinical Cytology, Graduate School of Medical Sciences, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan.
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42
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Niibe Y, Hayakawa K, Kanai T, Tsunoda S, Arai M, Jobo T, Kuramoto H, Unno N. Optimal dose for stage IIIB adenocarcinoma of the uterine cervix on the basis of biological effective dose. EUR J GYNAECOL ONCOL 2006; 27:47-9. [PMID: 16550968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
PURPOSE Prognosis of uterine cervical adenocarcinoma in locally advanced stage treated with radiation therapy has been considered to be much worse than that of squamous cell carcinoma because the optimal dose for the former one has not been determined. Thus, the current study was performed to investigate the optimal dose for Stage IIIB, locally advanced stage, adenocarcinoma of the uterine cervix on the basis of the biological effective dose (BED). METHODS One-hundred and seventy-nine patients with Stage IIIB carcinoma of the uterine cervix were treated with curative intended therapy at Kitasato University Hospital between 1976 and 2000. Out of them, 13 patients had an adenocarcinoma component in pathological findings. Nine patients were diagnosed with adenocarcinoma and four patients were diagnosed with adenosquamous cell carcinoma. All patients were treated with external radiation therapy combined with intracavitary radiation therapy. The total BED10 (T-BED10) was caluculated from the BED of the external beam radiation therapy (E-BED10) plus the BED of the intra-cavitary radiation therapy (A-BED). RESULTS Overall survival rate was 51%. Stratified by T-BED10 overall survival rate of the T-BED10 > or = 100 Gy group was 57% and that of the T-BED10 < 100 Gy group was 30%. There was a trend toward a better survival rate of the T-BED10 > or = 100 Gy group than the T-BED10 < 100 Gy group. CONCLUSION The current study suggested that the optimal dose for Stage IIIB adenocarcinoma of the uterine cervix might be T-BED10 > or = 100 Gy.
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Affiliation(s)
- Y Niibe
- Department of Radiology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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43
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Watanabe J, Watanabe K, Jobo T, Kamata Y, Kawaguchi M, Imai M, Okayasu I, Kuramoto H. Significance of p27 as a predicting marker for medroxyprogesterone acetate therapy against endometrial endometrioid adenocarcinoma. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200602001-00086] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Watanabe J, Watanabe K, Jobo T, Kamata Y, Kawaguchi M, Imai M, Okayasu I, Kuramoto H. Significance of p27 as a predicting marker for medroxyprogesterone acetate therapy against endometrial endometrioid adenocarcinoma. Int J Gynecol Cancer 2006;16(Suppl. 1): 452–457.We reported that p27 induced by medroxyprogesterone acetate (MPA) may be involved in the progestin-induced growth suppression of human endometrial adenocarcinoma cells. This study aimed at investigating whether p27 expression could be a predicting marker to evaluate the effectiveness of MPA therapy. The clinical responses of 15 patients with endometrial carcinoma treated with MPA were examined. p27 expression was evaluated by immunohistochemical staining. Percentage of positive nuclear staining was expressed as a strongly positive (SP) labeling index (LI). Before MPA treatment, SP LIs in the effective and noneffective groups were 22.6 ± 14.3% and 9.1 ± 9.2%. At 1–6 weeks in the MPA treatment, SP LIs increased in both groups and were significantly higher than those before the therapy. At 7–12 weeks, SP LIs in both groups decreased to the level of pretherapy. At 13–18 weeks, SP LIs in the effective group were 14.9 ± 5.7%, whereas in the noneffective group, 1.1 ± 2.0%. The former was significantly higher than the latter. p27 expression could predict the effectiveness of MPA treatment for endometrial carcinoma at an early stage of the 4-month period in MPA therapy and could be a useful predicting marker for MPA.
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44
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Saito M, Watanabe J, Fujisawa T, Kamata Y, Nishimura Y, Arai T, Miyamoto T, Obokata A, Kuramoto H. Angiopoietin-1, 2 and Tie2 expressions in endometrial adenocarcinoma--the Ang2 dominant balance up-regulates tumor angiogenesis in the presence of VEGF. EUR J GYNAECOL ONCOL 2006; 27:129-34. [PMID: 16620053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We investigated Ang1, Ang2 and Tie2 expressions including balance and intratumoral vessels in the role of angiogenesis of endometrial adenocarcinoma. Immunohistochemical staining was performed on 133 patients with endometrial (endometrioid) adenocarcinoma, including 73 with G1, 34 with G2, and 26 with G3. The levels of Ang1, Ang2 and Tie2 expressions were expressed as staining score. Total vessel count (TVC), microvessel count (MVC) and mean vessel diameter (VD) in the CD34-stained tissues were measured in five hot spot areas at x 200 magnification by image cytometry. These results were compared with high and low vascular endothelial growth factor (VEGF) expressions. Ang1, Ang2, Tie2 and CD34 were expressed in the cytoplasm of tumor cells. A significant correlation was found among Ang1, Ang2 and Tie2 expressions. In high VEGF cases, Ang1 expression was correlated negatively with TVC and MVC, but positively with VD, and the Angl < Ang2 group was significantly higher in TVC and MVC and tended to be smaller in VD than the Ang1 > Ang2 group. VD was significantly larger in G3 than in G1. The Ang1 < Ang2 balance may be one of the key factors for angiogenesis of endometrial carcinoma in the presence of high VEGF expression.
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Affiliation(s)
- M Saito
- Department of Clinical Cytology, Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan
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45
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Kawaguchi M, Watanabe J, Hamano M, Kamata Y, Arai T, Nishimura Y, Obokata A, Jobo T, Kuramoto H. Medroxyprogesterone acetate stimulates cdk inhibitors, p21 and p27, in endometrial carcinoma cells transfected with progesterone receptor-B cDNA. EUR J GYNAECOL ONCOL 2006; 27:33-8. [PMID: 16550965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
PURPOSE OF INVESTIGATION Progestin is reported to suppress the growth of endometrial carcinomas, although its precise mechanism of action is not clear. This study aimed to transfect progesterone receptor-B (PRB) cDNA into endometrial carcinoma cells and investigate the effect of medroxyprogesterone acetate (MPA) on cell growth, and p21 and p27 expression in the transfectant. METHODS Immunoblotting for p21 and p27 was performed at predetermined times after the administration of MPA. RESULTS PR expression was maximally induced in Ishikawa cells at 24 hrs after the transfection. At 1 x 10(-6) M, MPA suppressed the growth of the transfectant by 34% on day 6 and stimulated p21 accumulation at 48 to 72 hrs and p27 accumulation at 48 to 96 hrs after its administration. PRB cDNA was effectively transfected and in the transfectant MPA at 1 x 10(-6) M, the dosage suppressing growth, induced p21 and p27expression. CONCLUSION p21 and p27 may be related to progesterone-induced growth suppression in human endometrial adenocarcinoma.
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Affiliation(s)
- M Kawaguchi
- Department of Clinical Cytology, Kitasato University Graduate School of Medical Sciences, Kanagawa, Japan
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46
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Ohwada M, Wada T, Saga Y, Tsunoda S, Jobo T, Kuramoto H, Konno R, Suzuki M. C-kit overexpression in neuroendocrine small cell carcinoma of the uterine cervix. EUR J GYNAECOL ONCOL 2006; 27:53-5. [PMID: 16550970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
PURPOSE OF INVESTIGATION Neuroendocrine small cell carcinoma of the uterine cervix (NESCC) grows aggressively, and is resistant to anticancer agents and radiation, having an extremely poor prognosis. The incidence of c-kit proto-oncogene overexpression is high in gastrointestinal stromal tumors (GISTs) and small cell lung cancer, and tyrosine kinase inhibitors have been used effectively to treat GISTs. Few studies have investigated whether c-kit is overexpressed in NESCC. To investigate whether NESCC can be a target for molecular targeted therapy with tyrosine kinase inhibitors, we examined the expression of c-kit in this tumor. METHODS Twenty-one NESCCs were examined for c-kit expression by immunohistochemical staining using the labeled streptavidin-biotin complex (LSAB) method. The expression of c-kit was regarded as positive (overexpression) and negative when the membrane and cytoplasm of more or less than 25%, respectively, of tumor cells were stained. RESULTS Nine NESCCs (43%) were c-kit-positive (overexpression). No difference in age or clinical stage was noted. No difference in prognosis was observed between the c-kit-positive and -negative patients. CONCLUSION The incidence of c-kit overexpression was high in NESCC; therefore, the patients with this tumor may become a future target for molecular-targeted therapy with tyrosine kinase inhibitors.
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MESH Headings
- Adult
- Aged
- Biomarkers, Tumor/analysis
- Biopsy, Needle
- Carcinoma, Neuroendocrine/genetics
- Carcinoma, Neuroendocrine/mortality
- Carcinoma, Neuroendocrine/pathology
- Carcinoma, Neuroendocrine/therapy
- Carcinoma, Small Cell/genetics
- Carcinoma, Small Cell/mortality
- Carcinoma, Small Cell/pathology
- Carcinoma, Small Cell/therapy
- Female
- Gene Expression Regulation, Neoplastic
- Humans
- Immunohistochemistry
- Middle Aged
- Neoplasm Staging
- Probability
- Prognosis
- Proto-Oncogene Mas
- Proto-Oncogene Proteins c-kit/genetics
- Proto-Oncogene Proteins c-kit/metabolism
- Risk Assessment
- Sensitivity and Specificity
- Survival Rate
- Treatment Outcome
- Uterine Cervical Neoplasms/genetics
- Uterine Cervical Neoplasms/mortality
- Uterine Cervical Neoplasms/pathology
- Uterine Cervical Neoplasms/therapy
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Affiliation(s)
- M Ohwada
- Department of Obstetrics and Gynecology, Jichi Medical School, Kawachi, Tochigi, Japan
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47
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Katsumata N, Noda K, Nozawa S, Kitagawa R, Nishimura R, Yamaguchi S, Aoki D, Susumu N, Kuramoto H, Jobo T, Ueki K, Ueki M, Kohno I, Fujiwara K, Sohda Y, Eguchi F. Phase II trial of docetaxel in advanced or metastatic endometrial cancer: a Japanese Cooperative Study. Br J Cancer 2005; 93:999-1004. [PMID: 16234823 PMCID: PMC2361676 DOI: 10.1038/sj.bjc.6602817] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [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: 11/23/2022] Open
Abstract
The purpose of this study was to determine whether docetaxel has antitumour activity in patients with advanced or recurrent endometrial carcinoma. Chemotherapy-naïve or previously treated patients (one regimen) with histopathologically documented endometrial carcinoma and Eastern Cooperative Oncology Group performance status ⩽2 entered the study. Docetaxel 70 mg m−2 was administered intravenously on day 1 of a 3-week cycle up to a maximum of six cycles. If patients responded well to docetaxel, additional cycles were administered until progressive disease or unacceptable toxicity occurred. Of 33 patients with a median age of 59 years (range, 39–74 years) who entered the study, 14 patients (42%) had received one prior chemotherapy regimen. In all, 32 patients were evaluable for efficacy, yielding an overall response rate of 31% (95% confidence interval, 16.1–50.0%); complete response and partial response (PR) were 3 and 28%, respectively. Of 13 pretreated patients, three (23%) had a PR. The median duration of response was 1.8 months. The median time to progression was 3.9 months. The predominant toxicity was grade 3–4 neutropenia, occurring in 94% of the patients, although febrile neutropenia arose in 9% of the patients. Oedema was mild and infrequent. Docetaxel has antitumour activity in patients with advanced or recurrent endometrial carcinoma, including those previously treated with chemotherapy; however, the effect was transient and accompanied by pronounced neutropenia in most patients.
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MESH Headings
- Adenocarcinoma/drug therapy
- Adenocarcinoma/mortality
- Adenocarcinoma/secondary
- Adenocarcinoma, Papillary/drug therapy
- Adenocarcinoma, Papillary/mortality
- Adenocarcinoma, Papillary/secondary
- Adult
- Aged
- Antineoplastic Agents, Phytogenic/therapeutic use
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/mortality
- Carcinoma, Squamous Cell/secondary
- Cystadenocarcinoma, Serous/drug therapy
- Cystadenocarcinoma, Serous/mortality
- Cystadenocarcinoma, Serous/secondary
- Docetaxel
- Endometrial Neoplasms/drug therapy
- Endometrial Neoplasms/mortality
- Endometrial Neoplasms/pathology
- Female
- Humans
- Japan
- Middle Aged
- Neoplasm Recurrence, Local/drug therapy
- Salvage Therapy
- Survival Rate
- Taxoids/therapeutic use
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Affiliation(s)
- N Katsumata
- Department of Medical Oncology, National Cancer Center Hospital, 104-0045 Tokyo, Japan.
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Kamata Y, Watanabe J, Nishimura Y, Arai T, Kawaguchi M, Hattori M, Obokata A, Kuramoto H. High expression of skp2 correlates with poor prognosis in endometrial endometrioid adenocarcinoma. J Cancer Res Clin Oncol 2005; 131:591-6. [PMID: 16080017 DOI: 10.1007/s00432-005-0671-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2004] [Accepted: 01/16/2005] [Indexed: 10/25/2022]
Abstract
PURPOSE Skp2 interacts with the degradation of cyclin-dependent kinase inhibitor p27. This study aimed to investigate the correlation of skp2 expression with the expression of p27 and other cell cycle regulators, and clinicopathological parameters in endometrial endometrioid adenocarcinoma. METHODS Tissue samples of 136 endometrioid adenocarcinomas, in addition to 20 endometrial hyperplasias and 20 normal endometria, were immunohistochemically stained for skp2. The expression was represented as a labeling index (LI), which indicates the percentage of positive nuclei. RESULTS Skp2 staining was localized in the nuclei of the glandular cells of the proliferative phase endometrium, and endometrial hyperplasia and carcinoma cells. Skp2 expression was increased significantly in those of higher histological grade. The high level of skp2 expression was significantly correlated with the presence of lymph node metastasis and lymph-vascular space involvement. The LI of skp2 in endometrial carcinoma was significantly correlated with that of p27, Ki-67, cdk2, cyclin A, cyclin D1, cyclin E, p53 and PTEN. The high level of skp2 expression (LI> or =20%) was significantly correlated with the patients' poor survival. CONCLUSIONS The skp2 level might have increased due to p27 accumulation and may be a good indicator of proliferative activity and poor prognosis.
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Affiliation(s)
- Yuko Kamata
- Department of Clinical Cytology, Graduate School of Medical Sciences, Kitasato University, Kanagawa, Japan.
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49
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Tsunoda S, Jobo T, Arai M, Imai M, Kanai T, Tamura T, Watanabe J, Obokata A, Kuramoto H. Small-cell carcinoma of the uterine cervix: a clinicopathologic study of 11 cases. Int J Gynecol Cancer 2005; 15:295-300. [PMID: 15823115 DOI: 10.1111/j.1525-1438.2005.15219.x] [Citation(s) in RCA: 38] [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: 11/30/2022] Open
Abstract
We report the clinical profiles and immunohistochemical features of small-cell carcinoma of the uterine cervix. Eleven cases that we have encountered at the Department of Gynecology, Kitasato University Hospital, between 1971 and 2003 are presented. Of 1370 invasive carcinomas of the uterine cervix, the incidence of small-cell carcinoma was 0.8%. Patient ages ranged between 32 and 65 years, with a mean age of 46.3 years. The clinical stages at diagnosis were Ib in four patients, IIb in three, IIIb in three, and IVb in one. All patients presented with abnormal vaginal bleeding. Two patients who are alive with no evidence of disease for 12 years and 3 years 6 months, while eight patients died of primary carcinoma between 4 and 25 months after treatment. Histopathologic findings showed solid nests with marked peripheral palisading pattern and rosette formation. Small tumor cells with scant cytoplasm demonstrated a very high nuclear/cytoplasm ratio and indistinct cell borders. The nuclei were round to oval and demonstrated increased but fine granular chromatin. Nucleoli were indistinct in all cases. Immunohistochemical findings were positive in 81.8% each for neuron-specific enolase and protein gene product 9.5, 72.7% for synaptophysin, 63.6% for chromogranin A, and 54.5% for neural cell adhesion molecule. All specimens were positive for at least one of the above. In conclusion, small-cell carcinoma of the uterine cervix revealed poor prognosis. Making an accurate diagnosis of small-cell carcinoma before performing treatment is of great significance but often difficult. Immunohistochemical analysis using several kinds of neuroendocrine markers is helpful in establishing the correct diagnosis in addition to focusing on characteristic histo- and cytopathologic features.
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Affiliation(s)
- S Tsunoda
- Department of Obstetrics and Gynecology , School of Medicine, Kitasato University, Kanagawa, Japan.
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50
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Niibe Y, Oguchi M, Hayakawa K, Michimoto K, Kanai T, Jobo T, Kuramoto H, Unnno N, Nimi K. Impact of radiation therapy on survival for para-aortic lymph node only recurrence in patients with uterine cervical squamous cell carcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.5145] [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. Niibe
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - M. Oguchi
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - K. Hayakawa
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - K. Michimoto
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - T. Kanai
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - T. Jobo
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - H. Kuramoto
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - N. Unnno
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
| | - K. Nimi
- Kitasato Univ Sch of Medicine, Sagamihara, Kanagawa, Japan; The Cancer Inst Hosp Japan Fdn for Cancer Rsch, Tokyo, Japan
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