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Yasui H, Okita Y, Nakamura M, Sagawa T, Watanabe T, Kataoka K, Manaka D, Shiraishi K, Akazawa N, Okuno T, Shimura T, Shiozawa M, Sunakawa Y, Ota H, Kotaka M, Okuyama H, Takeuchi M, Ichikawa W, Fujii M, Tsuji A. Ramucirumab plus FOLFIRI as second-line treatment for patients with RAS wild-type metastatic colorectal cancer previously treated with anti-EGFR antibody: JACCRO CC-16. ESMO Open 2023; 8:101636. [PMID: 37703596 PMCID: PMC10594013 DOI: 10.1016/j.esmoop.2023.101636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/28/2023] [Accepted: 08/09/2023] [Indexed: 09/15/2023] Open
Abstract
BACKGROUND Chemotherapy in combination with anti-epidermal growth factor receptor (EGFR) antibody is considered a first-line treatment regimen for RAS wild-type and left-sided metastatic colorectal cancer (mCRC), whereas second-line treatment regimens have not yet been established. Few studies have prospectively evaluated second-line treatment with anti-vascular endothelial growth factor antibody after first-line anti-EGFR antibody therapy for RAS wild-type mCRC. PATIENTS AND METHODS This non-randomized phase II trial investigated the clinical outcomes of second-line ramucirumab (RAM) plus fluorouracil, levofolinate, and irinotecan (FOLFIRI) after first-line anti-EGFR antibody in combination with doublet or triplet regimen in patients with RAS wild-type mCRC. The primary endpoint was the 6-month progression-free survival (PFS) rate. The secondary endpoints were PFS, overall survival (OS), objective response rate (ORR), rate of early tumor shrinkage (ETS), and safety. We hypothesized a threshold 6-month PFS rate of 30% and an expected 6-month PFS rate of 45%. Treatment was considered effective if the lower limit of the 90% confidence interval (CI) of the 6-month PFS rate was >0.30. RESULTS Ninety-two patients were enrolled in the study. The primary tumor was located on the left side in 86 (95.6%) patients. Twenty (22.0%) patients had received triplet plus cetuximab as previous therapy. Six-month PFS rate was 58.2% (90% CI 49.3% to 66.2%) with a median PFS of 7.0 months (95% CI 5.7-7.6 months). Median OS was 23.6 months (95% CI 16.5-26.3 months). The ORR and ETS rate were 10.7% and 16.9%, respectively, in 83 patients with measurable lesions. The 6-month PFS rate was comparable between patients previously treated with doublet and triplet regimens; however, median PFS was longer for the doublet regimen (7.4 versus 6.4 months, P = 0.036). CONCLUSIONS Our study demonstrated prospectively that RAM plus FOLFIRI is an effective second-line treatment after anti-EGFR antibody-containing first-line therapy in RAS wild-type and left-sided mCRC. Furthermore, the results were similar for patients who were previously treated with triplet regimen.
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Affiliation(s)
- H Yasui
- Department of Medical Oncology, Kobe City Medical Center General Hospital, Kobe
| | - Y Okita
- Department of Clinical Oncology, Faculty of Medicine, Kagawa University, Kita-gun
| | - M Nakamura
- Aizawa Comprehensive Cancer Center, Aizawa Hospital, Matsumoto
| | - T Sagawa
- Department of Gastroenterology, National Hospital Organization Hokkaido Cancer Center, Sapporo
| | - T Watanabe
- Department of Surgery, Japanese Red Cross Society Himeji Hospital, Himeji
| | - K Kataoka
- Division of Lower GI, Department of Gastroenterological Surgery, Hyogo Medical University, Nishinomiya
| | - D Manaka
- Department of Surgery, Gastro-Intestinal Center, Kyoto Katsura Hospital, Kyoto
| | - K Shiraishi
- Department of Medical Oncology, National Hospital Organization Nagoya Medical Center, Nagoya
| | - N Akazawa
- Department of Gastroenterological Surgery, Sendai City Medical Center Sendai Open Hospital, Sendai
| | - T Okuno
- Department of Medical Oncology, Osaka Rosai Hospital, Sakai
| | - T Shimura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Nagoya
| | - M Shiozawa
- Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama
| | - Y Sunakawa
- Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki
| | - H Ota
- Department of Gastroenterological Surgery, Ikeda City Hospital, Ikeda
| | - M Kotaka
- Gastrointestinal Cancer Center, Sano Hospital, Kobe
| | - H Okuyama
- Department of Clinical Oncology, Faculty of Medicine, Kagawa University, Kita-gun
| | - M Takeuchi
- Graduate School of Mathematical Sciences, The University of Tokyo, Meguro-ku
| | - W Ichikawa
- Division of Medical Oncology, Showa University Fujigaoka Hospital, Yokohama
| | - M Fujii
- Department of Digestive Surgery, Nihon University School of Medicine, Itabashi-ku, Japan
| | - A Tsuji
- Department of Clinical Oncology, Faculty of Medicine, Kagawa University, Kita-gun.
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Kaerkitcha N, Sagawa T. Amplified polarization properties of electrospun nanofibers containing fluorescent dyes and helical polymer. Photochem Photobiol Sci 2018; 17:342-351. [DOI: 10.1039/c7pp00413c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Well-aligned nanofibers containing cationic fluorescent dyes and anionic chiral polymers prepared via electrospinning exhibit an enhanced circular dichroism, which is mainly caused by linear dichroism and linear birefringence.
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Affiliation(s)
- N. Kaerkitcha
- Graduate School of Energy Science
- Kyoto University
- Kyoto 606-8501
- Japan
| | - T. Sagawa
- Graduate School of Energy Science
- Kyoto University
- Kyoto 606-8501
- Japan
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Sato Y, Ohnuma H, Okamoto K, Miyamoto H, Hirakawa M, Uemura N, Kikuchi S, Sagawa T, Fujikawa K, Takahashi Y, Minami S, Okuda T, Takahashi M, Kato J, Takayama T. Phase II study of modified docetaxel, cisplatin and S-1 (mDCS) combination chemotherapy in patients with unresectable metastatic gastric cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx369.064] [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: 11/12/2022] Open
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Tsuji A, Eto T, Masuishi T, Satake H, Segawa Y, Tanioka H, Hara H, Kotaka M, Sagawa T, Watanabe T, Nakamura M, Takahashi T, Negoro Y, Manaka D, Fujita H, Suto T, Ichikawa W, Fujii M, Takeuchi M, Nakajima T. Phase II study of third-line cetuximab rechallenge in patients with metastatic wild-type K-RAS colorectal cancer who achieved a clinical benefit in response to first-line cetuximab plus chemotherapy (JACCRO CC-08). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw370.58] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Satake H, Nakamura M, Tsuji A, Sagawa T, Tamura F, Hatachi Y, Oguchi K, Takagane A, Kaji T, Sekikawa T, Furukawa M, Kochi M, Ichikawa W, Takeuchi M, Fujii M, Nakajima T. Phase II study to evaluate the efficacy of regorafenib in metastatic colorectal cancer patients by the assessment using FDG-PET/CT (JACCRO CC-12) metastatic colorectal cancer (JACCRO CC-12). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw370.72] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Sagawa T, Kakizaki S, Tomizawa T, Nakayama T, Tanaka H, Tojima H, Sato K, Kusano M, Okamura S, Yamada M. Faecal lactoferrin is a useful biomarker for mucosal healing in patients with ulcerative colitis during granulocyte and monocyte adsorptive apheresis therapy. Colorectal Dis 2016; 18:696-702. [PMID: 26748553 DOI: 10.1111/codi.13258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/07/2015] [Indexed: 12/13/2022]
Abstract
AIM The study investigated the value of faecal lactoferrin as a follow-up biomarker for mucosal healing of ulcerative colitis during granulocyte and monocyte adsorptive apheresis (GMA) therapy. METHOD Patients with ulcerative colitis exhibiting a moderate or severe disease activity with a partial Mayo Score (pMS) of over 4 were enrolled in this study. The patients received 10 courses of GMA therapy. The pMS value and faecal lactoferrin level were monitored and compared with the findings of endoscopy until 12 months after the last dose of GMA therapy. RESULTS Twenty patients (male:female 11:9) were enrolled in this study. Twelve had total colitis, while six had left-sided involvement and two had distal proctitis. Thirteen (65.0%) responded to GMA therapy. The faecal lactoferrin levels were significantly decreased in patients who responded to GMA therapy (P < 0.05), whereas the levels did not change in non-responders. Moreover, the faecal lactoferrin levels correlated with the endoscopic findings (r = 0.792, P < 0.01) and pMS scores (r = 0.529, P < 0.01). The correlation coefficients between the faecal lactoferrin levels and mucosal findings were higher than those observed between the pMS score and mucosal findings. CONCLUSION The faecal lactoferrin level is a useful biomarker of the mucosal findings in ulcerative colitis. Although endoscopy is the gold standard, the faecal lactoferrin level can be used as a biomarker during GMA therapy in patients with ulcerative colitis.
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Affiliation(s)
- T Sagawa
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - S Kakizaki
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Tomizawa
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - T Nakayama
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - H Tanaka
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - H Tojima
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - K Sato
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - M Kusano
- Department of Endoscopy and Endoscopic Surgery, Gunma University Hospital, Maebashi, Japan
| | - S Okamura
- Department of Health and Nutritional Science, Takasaki University of Health and Welfare, Takasaki, Japan
| | - M Yamada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Maebashi, Japan
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Tobata H, Sagawa T. Specific excitonic interactions in the aggregates of hyaluronic acid and cyanine dyes with different lengths of methine group. Photochem Photobiol Sci 2016; 15:329-33. [PMID: 26815728 DOI: 10.1039/c5pp00343a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The absorption and circular dichroism (CD) spectra of three types of cyanine dyes with different lengths of methine group (3,3'-diethylthiadicarbocyanine iodide, DTDC; 3,3'-diethylthiacarbocyanine iodide, DTC; and 3,3'-diethylthiacyanine iodide, DTTHC) in an aqueous solution were compared with and without hyaluronic acid (HA), which has a helical structure. DTDC forms chiral H- and J-aggregates, whereas DTC and DTTHC are unable to form any aggregates. DTDC also forms H- and J-aggregates in the presence of sodium polyacrylate (PA) with a random-coil structure; however, the PA-DTDC aggregates exhibit no chirality. These results suggest that the chirality of HA-DTDC aggregates is induced by the helical structure of HA. In 2.4 vol% and 10 vol% methanol, HA-DTDC aggregates displayed different patterns of temperature dependence, whereas no aggregation was observed in 30 vol% methanol. The solubility of DTDC in a mixed solvent of water and methanol is generally improved by the addition of methanol, which prevents the aggregation of DTDC.
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Affiliation(s)
- H Tobata
- Graduate School of Energy Science, Kyoto University, Yoshida-Honmachi, Sakyo-Ku, Kyoto 606-8501, Japan.
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Sato Y, Ohnuma H, Hirakawa M, Osuga T, Okagawa Y, Sagawa T, Takahashi Y, Takahashi M, Maeda M, Katsuki S, Hirayama M, Kikuchi S, Murase K, Takada K, Sato T, Miyanishi K, Kobune M, Takimoto R, Takayama T, Kato J. 2298 Docetaxel, cisplatin and S-1 (DCS) combination chemotherapy for gastric cancer patients with peritoneal metastasis: a multi-institute retrospective study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31214-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sato Y, Ohnuma H, Takayama T, Sagawa T, Hirakawa M, Sato Y, Takahashi Y, Takahashi M, Maeda M, Katsuki S, Hirayama M, Takada K, Hayashi T, Sato T, Miyanishi K, Kobune M, Takimoto R, Nobuoka T, Hirata K, Kato J. Treatment Strategy for Conversion Therapy Using Docetaxel/Cddp/S-1 (Dcs) or Dcs-Trastuzumab (Dcs-T) According to Her2 Status in Metastatic Gastric Cancer Patients. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Koski JV, Maisi VF, Sagawa T, Pekola JP. Experimental observation of the role of mutual information in the nonequilibrium dynamics of a Maxwell demon. Phys Rev Lett 2014; 113:030601. [PMID: 25083623 DOI: 10.1103/physrevlett.113.030601] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Indexed: 06/03/2023]
Abstract
We validate experimentally a fluctuation relation known as generalized Jarzynski equality governing the work distribution in a feedback-controlled system. The feedback control is performed on a single electron box analogously to the original Szilard engine. In the generalized Jarzynski equality, mutual information is treated on an equal footing with the thermodynamic work. Our measurements provide the first evidence of the role of mutual information in the fluctuation theorem and thermodynamics of irreversible processes.
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Affiliation(s)
- J V Koski
- Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland
| | - V F Maisi
- Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland and Centre for Metrology and Accreditation (MIKES), P.O. Box 9, 02151 Espoo, Finland
| | - T Sagawa
- Department of Basic Science, The University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan
| | - J P Pekola
- Low Temperature Laboratory (OVLL), Aalto University, POB 13500, FI-00076 Aalto, Finland
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Fujii W, Ashihara E, Nagahara H, Kukida Y, Ishigaki R, Kasahara A, Sagawa T, Seno T, Yamamoto A, Kohno M, Oda R, Tokunaga D, Kubo T, Kawahito Y. OP0175 Monocarboxylate Transporter (MCT)-4, Associated with the Decrease of Synovial Fluid Ph, is A Novel Therapeutic Target of Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1017] [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: 11/04/2022]
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Kukida Y, Kida T, Inoue T, Isoda Y, Sagawa T, Ishigaki R, Kasahara A, Nakabayashi A, Fujioka K, Nagahara H, Fujii W, Murakami K, Seno T, Yamamoto A, Kohno M, Kawahito Y. AB0501 Retrospective Study of Multitarget Therapy with Combination of Mizoribine and Tacrolimus for Systemic Lupus Erythematosus with or without Nephritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Fukuoka H, Sagawa T, Inoue Y, Takahashi H, Ishijima A. Direct Imaging of Intracellular Signaling Components That Regulate Bacterial Chemotaxis. Sci Signal 2014; 7:ra32. [DOI: 10.1126/scisignal.2004963] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Ohnuma H, Sato Y, Takayama T, Sagawa T, Hirakawa M, Harada K, Nobuoka T, Hirata K, Sato Y, Takahashi Y, Katsuki S, Takahashi S, Hirayama M, Takahashi M, Maeda M, Sato T, Miyanishi K, Kobune M, Takimoto R, Kato J. A phase II study of neoadjuvant combination chemotherapy with docetaxel, cisplatin, and S-1 for locally advanced gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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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Boisnier E, Sagawa T, Komatsu T, Takagi N, Katayama M, Katayama T. A habitat association index to distinguish resident species along marine artificial reefs. COMMUNITY ECOL 2009. [DOI: 10.1556/comec.10.2009.2.5] [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: 11/19/2022]
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Ihara H, Takafuji M, Sakurai T, Tsukamoto H, Shundo A, Sagawa T, Nagaoka S. Facile Enantiomer Analysis by Combination of N‐Dansyl Amino Acid as Diastereomerizer and Molecular‐Shape Recognitive RP‐HPLC Using Comb‐Shaped Polymer‐Immobilized Silica. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-200028400] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- H. Ihara
- a Institute for Materials Chemistry and Engineering , Kyushu University , Fukuoka , Japan
- b Department of Applied Chemistry , Kumamoto University , Kumamoto , Japan
| | - M. Takafuji
- b Department of Applied Chemistry , Kumamoto University , Kumamoto , Japan
| | - T. Sakurai
- b Department of Applied Chemistry , Kumamoto University , Kumamoto , Japan
| | - H. Tsukamoto
- b Department of Applied Chemistry , Kumamoto University , Kumamoto , Japan
| | - A. Shundo
- b Department of Applied Chemistry , Kumamoto University , Kumamoto , Japan
| | - T. Sagawa
- c Institute of Advanced Energy , Kyoto University , Uji , Japan
| | - S. Nagaoka
- d Kumamoto Industrial Research Institute , Kumamoto , Japan
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Tanaka M, Sagawa T, Hashimoto M, Mizumoto Y, Yoshimoto H, Yamazaki R, Kasai T, Inoue M. The Culdotomy FourS Two U procedure for transvaginal access to the peritoneal cavity. Endoscopy 2009; 41:472-4. [PMID: 19418403 DOI: 10.1055/s-0029-1214593] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
A reliable method of transvaginal access is needed for natural orifice transluminal endoscopic surgery. We introduce a new culdotomy procedure, using a technique for the creation of space in the cul-de-sac, transvaginal ultrasound, and a newly developed umbrella Hakko needle. An artificially developed, saline-containing space in the cul-de-sac was punctured by an umbrella Hakko needle from the vagina under the guidance of ultrasound. The vaginal walls on both sides of the needle were incised with an electric scalpel. In five cases with benign gynecological tumors, culdotomy was successfully performed. Operating time was less than 10 minutes and blood loss was less than 10 mL. There were no culdotomy-associated complications. This procedure, named Culdotomy FourS Two U, is a simple, safe, and reliable method for entry into the cul-de-sac in transvaginal gynecological surgeries and may have future applications in transluminal endoscopic surgery through the vagina.
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Affiliation(s)
- M Tanaka
- Department of Obstetrics and Gynecology, Kanazawa University, School of Medicine, Ishikawa, Japan.
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Watanabe N, Jintoku H, Sagawa T, Takafuji M, Sawada T, Ihara H. Self-assembling fullerene derivatives for energy transfer in molecular gel system. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/159/1/012016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sato Y, Takayama T, Takahari D, Sagawa T, Sato T, Abe S, Kogawa T, Nikaido T, Miyanishi K, Takahashi S, Kato J, Niitsu Y. Successful treatment for gastro-intestinal bleeding of Osler-Weber-Rendu disease by argon plasma coagulation using double-balloon enteroscopy. Endoscopy 2008; 40 Suppl 2:E228-9. [PMID: 18991211 DOI: 10.1055/s-2007-966562] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Y Sato
- Fourth Department of Internal Medicine, Sapporo Medical University, School of Medicine, Sapporo, Japan
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Sato Y, Takayama T, Sagawa T, Tanaka S, Takahashi S, Takimoto R, Kato J, Ohnuma H, Takahashi Y, Niitsu Y. Phase II study of S-1, docetaxel and cisplatin combination chemotherapy in patients with unresectable metastatic gastric cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tanaka M, Sagawa T, Hashimoto M, Mizumoto Y, Yoshimoto H, Yamazaki R, Kasai T, Inoue M. Ultrasound-guided culdotomy for vaginal ovarian cystectomy using a renal balloon dilator catheter. Ultrasound Obstet Gynecol 2008; 31:342-345. [PMID: 18307175 DOI: 10.1002/uog.5272] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVES To evaluate the feasibility and utility of performing ultrasound-guided culdotomy using a renal balloon dilator catheter for transvaginal ovarian cystectomies. METHODS Culdotomy using transvaginal sonography and a Nephromax balloon dilator catheter was performed in 16 patients for the vaginal removal of benign ovarian cysts located in the cul-de-sac. Each ovarian cyst was punctured under transvaginal ultrasound guidance and the punctured site on the vaginal wall was enlarged with a dilator. The cyst was then enucleated through this vaginal wound. Preoperative characteristics of the patients, outcome, operating time, blood loss and complications of each culdotomy, and the histology of the cysts, were recorded and examined. RESULTS We used this method on 14 patients with unilateral ovarian cysts and two with bilateral cysts. Culdotomy was performed successfully in 15 cases (94%). The mean +/- SD operating time for culdotomy was 22 +/- 11 min, and blood loss during the procedure was less than 10 mL in all cases. There were no complications including rectal injury or febrile morbidity. CONCLUSIONS Culdotomy assisted by ultrasound imaging and a dilator is a safe, reliable and effective method for removal of benign ovarian cysts via a vaginal approach.
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Affiliation(s)
- M Tanaka
- Department of Obstetrics and Gynecology, School of Medicine, Kanazawa University, Japan.
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Takayama T, Sato Y, Sagawa T, Okamoto T, Nagashima H, Takahashi Y, Ohnuma H, Kuroiwa G, Miyanishi K, Takimoto R, Matsunaga T, Kato J, Yamaguchi K, Hirata K, Niitsu Y. Phase I study of S-1, docetaxel and cisplatin combination chemotherapy in patients with unresectable metastatic gastric cancer. Br J Cancer 2007; 97:851-6. [PMID: 17848958 PMCID: PMC2360407 DOI: 10.1038/sj.bjc.6603957] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [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: 01/13/2023] Open
Abstract
The aim of this dose escalation study was to determine the maximum-tolerated dose (MTD), dose-limiting toxicities (DLTs) and preliminary efficacy of docetaxel, S-1 and cisplatin combination chemotherapy in patients with unresectable metastatic gastric cancer. Seventeen patients received oral S-1 (40 mg m−2 bid) on days 1–14, intravenous cisplatin (60 mg m−2) and docetaxel (60, 70 or 80 mg m−2 depending on DLT) on day 8 every 3 weeks. The MTD of this combination was presumed to be docetaxel 70 mg m−2. At this dose level, 40% of the patients (two of five) developed grade 4 neutropenia and 20% (one of five) exhibited grade 3 nausea during the first course. Therefore, the recommended dose of docetaxel was defined as 60 mg m−2. The DLT was neutropenia. The response rate (RR) was 88.2% (15 of 17), consisting of one complete response and 14 partial responses. There were two stable diseases but no progressive disease. Of these 15 responders, four (23.5%) with high VEGF expression showed rapid tumour regression and achieved downstaging, leading to subsequent curative gastrectomy. Three of these have been disease free for about 3 years, suggesting a complete cure. In conclusion, this regimen was tolerable and showed a quite high RR, with an appreciable downstaging rate in metastatic gastric cancer.
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Affiliation(s)
- T Takayama
- Fourth Department of Internal Medicine, Sapporo Medical University, School of Medicine, Sapporo, Japan.
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23
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Chowdhury MAJ, Ihara H, Sagawa T, Hirayama C. RETENTION BEHAVIORS OF POLYCYCLIC AROMATIC HYDROCARBONS ON COMB-SHAPED POLYMER IMMOBILIZED-SILICA IN RPLC. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100100488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- M. A. Jamil Chowdhury
- a Graduate School of Science and Technology, Kumamoto University , 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - H. Ihara
- a Graduate School of Science and Technology, Kumamoto University , 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - T. Sagawa
- b Department of Applied Chemistry & Biochemistry , Faculty of Engineering, Kumamoto University , 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - C. Hirayama
- b Department of Applied Chemistry & Biochemistry , Faculty of Engineering, Kumamoto University , 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
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Takayama T, Sato Y, Okamoto T, Sagawa T, Abe T, Ihara H, Nagashima H, Kato J, Niitsu Y. Phase I/II study of docetaxel, CDDP and S-1 in unresectable advanced gastric cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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. Sato
- Sapporo Medcl Univ, Sapporo, Japan
| | | | | | - T. Abe
- Sapporo Medcl Univ, Sapporo, Japan
| | - H. Ihara
- Sapporo Medcl Univ, Sapporo, Japan
| | | | - J. Kato
- Sapporo Medcl Univ, Sapporo, Japan
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25
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Abstract
The incidence of endometrial cancer and ovarian cancer in Japan has been increasing in recent years. Results of epidemiologic studies suggest that the onset and multiplication of these cancers are associated with estrogen. Estrogens are metabolized by cytochrome P450 1A1 (CYP1A1) and converted into catecholestrogens, which are carcinogens. CYP1A1 has several polymorphisms, the major one being T6235C transition in the non-coding 3'-flanking region (MspI polymorphism), and another being A4889G transition in exon 7 (Ile/Val polymorphism). These polymorphisms can affect the metabolites of estrogens and contribute to the susceptibility to gynecological malignancy. In this study, to determine whether CYP1A1 polymorphism plays a role in the development of gynecological malignancy in the Japanese population, we assessed the association of CYP1A1 polymorphism in Japanese patients with gynecological malignancy in comparison to that in controls. The odds ratios (ORs) of Ile/Val polymorphism were 1.16 in ovarian cancer patients and 1.70 in endometrial cancer patients. The ORs of MspI polymorphism were 1.33 in ovarian cancer patients and 0.88 in endometrial cancer patients. No significant association was found between these CYP1A1 polymorphisms and gynecological malignancy. Although the frequency of CYP1A1 polymorphism in the Japanese population is higher than that in the Caucasian population, CYP1A1 polymorphism is not related to gynecological malignancies in Japanese population.
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Affiliation(s)
- T Sugawara
- Departments of Biochemistry, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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26
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Sagawa T, Takayama T, Oku T, Hayashi T, Ota H, Okamoto T, Muramatsu H, Katsuki S, Sato Y, Kato J, Niitsu Y. Argon plasma coagulation for successful treatment of early gastric cancer with intramucosal invasion. Gut 2003; 52:334-9. [PMID: 12584212 PMCID: PMC1773547 DOI: 10.1136/gut.52.3.334] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND In recent years, there has been an increasing number of cases of early gastric cancer (T1, NX) with intramucosal invasion, which are untreatable by surgical or endoscopic mucosal resection (EMR) because of their high risk. Currently, no adequate treatment is available for such patients. AIM The main objective of this study was to evaluate whether argon plasma coagulation (APC) is an effective and safe modality for treating early gastric cancer untreatable by surgical resection or EMR. METHODS The study group comprised 20 men and seven women diagnosed with gastric cancer with intramucosal invasion who were considered poor candidates for surgical resection or EMR due to risk factors such as severe cardiac failure or thrombocytopenia. Irradiation conditions for APC treatment were determined using swine gastric mucosa. We used an argon gas flow of 2 l/min at a power setting of 60 W and a maximum irradiation time of 15 s/cm(2). The follow up period of the 27 patients ranged from 18 to 49 months (median 30 months). RESULTS All lesions were irradiated easily, including areas anatomically difficult for EMR such as the gastric cardia or the posterior wall of the upper gastric body. In 26 of 27 patients (96%) there was no evidence of recurrence during the follow up period (median 30 months). One patient showed recurrence six months after the treatment but was successfully retreated. No serious complications were found in any of the 27 patients but three patients (11%) experienced a feeling of abdominal fullness. INTERPRETATION APC is a safe and effective modality for treatment of early gastric cancer with intramucosal invasion untreatable by surgical resection or EMR. However, further observations are necessary to determine the long term prognosis of patients undergoing this treatment.
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Affiliation(s)
- T Sagawa
- Fourth Department of Internal Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
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27
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Abstract
The incidence of endometrial cancer and ovarian cancer in Japan has been increasing in recent years. Results of epidemiologic studies suggest that the onset and multiplication of these cancers are associated with estrogen. Estrogens are metabolized by cytochrome P450 1A1 (CYP1A1) and converted into catecholestrogens, which are carcinogens. CYP1A1 has several polymorphisms, the major one being T6235C transition in the non-coding 3′-flanking region (MspI polymorphism), and another being A4889G transition in exon 7 (Ile/Val polymorphism). These polymorphisms can affect the metabolites of estrogens and contribute to the susceptibility to gynecological malignancy. In this study, to determine whether CYP1A1 polymorphism plays a role in the development of gynecological malignancy in the Japanese population, we assessed the association of CYP1A1 polymorphism in Japanese patients with gynecological malignancy in comparison to that in controls. The odds ratios (ORs) of Ile/Val polymorphism were 1.16 in ovarian cancer patients and 1.70 in endometrial cancer patients. The ORs of MspI polymorphism were 1.33 in ovarian cancer patients and 0.88 in endometrial cancer patients. No significant association was found between these CYP1A1 polymorphisms and gynecological malignancy. Although the frequency of CYP1A1 polymorphism in the Japanese population is higher than that in the Caucasian population, CYP1A1 polymorphism is not related to gynecological malignancies in Japanese population.
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28
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Morikawa M, Yamada H, Kato EH, Shimada S, Ebina Y, Yamada T, Sagawa T, Kobashi G, Fujimoto S. NK cell activity and subsets in women with a history of spontaneous abortion. Cause, number of abortions, and subsequent pregnancy outcome. Gynecol Obstet Invest 2002; 52:163-7. [PMID: 11598357 DOI: 10.1159/000052966] [Citation(s) in RCA: 17] [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: 11/19/2022]
Abstract
OBJECTIVE The aim of this study was to assess the role of NK cells in nonpregnant women with a history of spontaneous abortion. STUDY DESIGN 113 nonpregnant women with a history of spontaneous abortion were assessed for peripheral NK cell activity and percentage of NK cell subsets, in relation to the cause of abortions, the number of spontaneous abortions, and subsequent pregnancy outcome (n = 56). RESULTS Neither NK cell activity nor subsets showed a significant difference in relation to the cause or number of spontaneous abortions. NK cell activity in nonpregnant women who later experienced subsequent abortion with normal chromosomes (n = 10) (mean +/- SD: 42.8 +/- 15.8%) was relatively higher than that in women with subsequent live birth (control, n = 39) (32.1 +/- 13.7%) (p = 0.099). NK cell activity in women who later experienced subsequent abortion with abnormal chromosomes (n = 7) (28.7 +/- 21.4%) was the same as the level in the control. CONCLUSION Peripheral NK cell activity or subsets during nonpregnant status were not related to the cause or number of previous spontaneous abortions. A relation between preconceptional NK cell activity and later experiencing abortion with normal chromosomes should be further studied.
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Affiliation(s)
- M Morikawa
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan
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29
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Yamada H, Hirayama Kato E, Tsuruga R, Ebina Y, Kobashi G, Sagawa T, Makita Z, Koike T, Fujimoto S. Insulin response patterns contribute to different perinatal risks in gestational diabetes. Gynecol Obstet Invest 2001; 51:103-9. [PMID: 11223703 DOI: 10.1159/000052903] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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
The aim of this study was to evaluate the insulin dynamics of patients with gestational diabetes mellitus (GDM) and to compare perinatal outcomes according to the insulin response patterns. Twenty-two out of 925 consecutive women examined were diagnosed as having GDM. One hundred and ten women who experienced a normal pregnancy were used as controls. Plasma glucose levels and insulin responses were evaluated by a 2-hour 75-gram oral glucose tolerance test (OGTT). Immunoreactive insulin (IRI), the area under the curve (AUC) of glucose (AUCg) and insulin (AUCi), and the insulinogenic index (II = DeltaIRI 30 min/DeltaBS 30 min) were measured. The GDM patients were divided into three subgroups, consisting of hyper-, normo- and hypoinsulinemic groups, according to the mean +/- 2 SD of the AUCi obtained from the controls. Clinical and laboratory findings were compared among the GDM subgroups and controls. The GDM patients showed impaired insulin secretion to glucose stimuli, with low plasma insulin levels (at 30 min) and reduced insulin/glucose ratios (at 30 and 60 min) early in the 75-gram OGTT. The II and AUCi/AUCg values of GDM patients were reduced as compared with those of controls. These reduced insulin responses were remarkable in hypo- and normoinsulinemic GDM patients, but were not detected in hyperinsulinemic GDM patients. The number of babies large for their gestational age in normo- and hypoinsulinemic GDM patients was significantly higher than that in hyperinsulinemic GDM patients or controls. Hyperinsulinemic GDM patients had a high frequency of pregnancy-induced hypertension (40%). The body mass index prior to pregnancy of hyperinsulinemic GDM patients was significantly higher than that of normoinsulinemic GDM patients or controls. It was demonstrated that not only insulin secretion, but also perinatal clinical characteristics, differed among the GDM subgroups. The heterogeneity of the disease was thus confirmed.
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MESH Headings
- Adult
- Analysis of Variance
- Area Under Curve
- Blood Glucose/analysis
- Diabetes, Gestational/diagnosis
- Diabetes, Gestational/drug therapy
- Diabetes, Gestational/physiopathology
- Female
- Glucose Tolerance Test
- Humans
- Infant, Newborn
- Infant, Newborn, Diseases/diagnosis
- Infant, Newborn, Diseases/etiology
- Insulin/administration & dosage
- Insulin/blood
- Insulin Resistance/physiology
- Perinatal Care/methods
- Pregnancy
- Pregnancy Complications/diagnosis
- Pregnancy Complications/drug therapy
- Pregnancy Complications/physiopathology
- Pregnancy Outcome
- Pregnancy, High-Risk
- Probability
- Risk Factors
- Statistics, Nonparametric
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Affiliation(s)
- H Yamada
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan.
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30
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Luo ML, Sakuragi N, Shimizu M, Seino K, Okamoto K, Kaneuchi M, Ebina Y, Okuyama K, Fujino T, Sagawa T, Fujimoto S. Prognostic significance of combined conventional and immunocytochemical cytology for peritoneal washings in endometrial carcinoma. Cancer 2001; 93:115-23. [PMID: 11309777 DOI: 10.1002/cncr.9017] [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: 11/08/2022]
Abstract
BACKGROUND Noncancerous cells simulating adenocarcinoma cells may interfere with the analysis of peritoneal cytology (PC) in patients with endometrial carcinoma. Immunocytochemistry (ICC) may improve the diagnosis of PC. METHODS PC slides from 115 patients with endometrial carcinoma were reviewed. Suspicious or positive cell clusters were recovered with a cell transfer method and were subjected to ICC for MOC-31, cytokeratin 5/6, and p53. Conventional Papanicolaou staining and ICC results were compared directly on the same cells. RESULTS By combined conventional and immunocytochemical PC (CONV-ICC-PC), cytodiagnosis was positive in 18 of 115 patients (15.7%) and suspicious in 3 of 115 patients (2.6%). According to a multivariate Cox regression analysis of patients with tumors confined to the uterus that included grade, myometrial invasion, cervical involvement, and CONV-ICC-PC, only CONV-ICC-PC was an independent prognostic factor (P < 0.05). A multivariate analysis for all of the patients studied that compared CONV-ICC-PC with staging variables revealed that only peritoneal metastasis (P < 0.0001) and lymph node metastasis (P < 0.01) were independent prognostic factors. When peritoneal metastases were excluded, CONV-ICC-PC (P < 0.01) and lymph node metastasis (P < 0.0025) were the independent prognostic factors. By cell transfer and p53 immunostaining in samples from 14 patients with malignant cells in their peritoneal washings, no deaths occurred among 5 patients with negative p53, whereas 5 of 9 patients with positive p53 died of disease at the time of data analysis. CONCLUSIONS MOC-31 immunostaining improves the diagnosis of PC in endometrial carcinoma. Positive PC is an important prognostic factor for patients with endometrial carcinoma confined to the uterus. The p53 positive cells in PC have possible prognostic significance.
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Affiliation(s)
- M L Luo
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan
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31
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Ohkubo K, Sawakuma K, Sagawa T. Influence of cross-linking monomer and hydrophobic styrene comonomer on stereoselective esterase activities of polymer catalyst imprinted with a transition-state analogue for hydrolysis of amino acid esters. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00453-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Sagawa T, Nishio M, Sagawa K, Kelly JE, Lokuta AJ, Tsai J, Kan E, Wasserstrom JA. Activation of purified cardiac ryanodine receptors by dihydropyridine agonists. Am J Physiol Heart Circ Physiol 2001; 280:H1201-7. [PMID: 11179064 DOI: 10.1152/ajpheart.2001.280.3.h1201] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Prior observations have raised the possibility that dihydropyridine (DHP) agonists directly affect the sarcoplasmic reticulum (SR) cardiac Ca(2+) release channel [i.e., ryanodine receptor (RyR)]. In single-channel recordings of purified canine cardiac RyR, both DHP agonists (-)-BAY K 8644 and (+)-SDZ202-791 increased the open probability of the RyR when added to the cytoplasmic face of the channel. Importantly, the DHP antagonists nifedipine and (-)-SDZ202-791 had no competitive blocking effects either alone or after channel activation with agonist. Thus there is a stereospecific effect of SDZ202-791, such that the agonist activates the channel, whereas the antagonist has little effect on channel activity. Further experiments showed that DHP agonists changed RyR activation by suppressing Ca(2+)-induced inactivation of the channel. We concluded that DHP agonists can also influence RyR single-channel activity directly at a unique allosteric site located on the cytoplasmic face of the channel. Similar results were obtained in human purified cardiac RyR. An implication of these data is that RyR activation by DHP agonists is likely to cause a loss of Ca(2+) from the SR and to contribute to the negative inotropic effects of these agents reported by other investigators. Our results support this notion that the negative inotropic effects of DHP agonists result in part from direct alteration in the activity of RyRs.
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Affiliation(s)
- T Sagawa
- Division of Cardiology, Department of Medicine, Northwestern University Medical School, Chicago, Illinois 60611, USA
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33
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Abstract
Chlamydia trachomatis (CT) infection in pregnant women is related to unfavorable obstetric outcomes such as prematurity, intrauterine growth retardation, and stillbirth. A 22-year-old woman underwent transabdominal amniocentesis at 16 weeks of gestation (GW). A CT antigen test using polymerase chain reaction in the amniotic fluid was found to be positive, though the patient had no symptom of infection. Beginning at 20 GW, clarithromycin was orally administered at a dose of 400 mg/day for 2 weeks. The CT antigen test in amniotic fluid at 28 GW turned to a negative result. A female baby was vaginally born at 38 GW by spontaneous labor. The CT antigen test of her gastric contents showed a negative result and anti-CT IgM in umbilical cord blood was negative. Neither respiratory distress, pneumonia, nor conjunctivitis was detected. To the best of our knowledge, this case is the first report showing the reversal of the intra-amniotic CT antigen status by antibiotic treatment.
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Affiliation(s)
- H Yoshida
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan
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34
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Yamamoto R, Azuma M, Wakui Y, Kishida T, Yamada H, Okuyama K, Sagawa T, Shimizu K, Satomura S, Fujimoto S. Alpha-fetoprotein microheterogeneity: a potential biochemical marker for Down's syndrome. Clin Chim Acta 2001; 304:137-41. [PMID: 11165209 DOI: 10.1016/s0009-8981(00)00381-8] [Citation(s) in RCA: 19] [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: 11/22/2022]
Abstract
Our purpose was to examine the utility of analyzing alpha-fetoprotein (AFP) microheterogeneity assessed by lectin affinity in Down's syndrome (DS) screening. Maternal sera and amniotic fluids were collected from 18 women who were carrying DS fetuses and 70 unaffected pregnancies around 16 weeks of gestation. The percentages of AFP which reacted with Lens culinaris agglutinin (AFP-L2,3) were determined by lectin affinity electrophoresis. AFP-L2,3 levels were significantly increased (P<0.0001) in both maternal serum and amniotic fluid from DS-affected versus unaffected pregnancies. The fractional areas under the receiver operating characteristic curves were 0.835 and 0.700 (P=0.106) for AFP-L3 and AFP MoM (multiples of the median) in maternal serum. No correlation was found between AFP-L3 and AFP MoM in maternal serum (r=0.006). Our data suggest that the measurement of AFP-L3 in maternal serum is a potential biochemical marker for DS.
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Affiliation(s)
- R Yamamoto
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Kita-15, Nishi-7, Kita-Ku, Sapporo 060-8638, Japan.
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35
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Takahashi T, Tokailin H, Suzuki S, Sagawa T, Shirotani I. Electronic band structure of black phosphorus studied by angle-resolved ultraviolet photoelectron spectroscopy. ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/18/4/013] [Citation(s) in RCA: 46] [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] [Indexed: 11/12/2022]
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36
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Sakuragi N, Yamada H, Oikawa M, Okuyama K, Fujino T, Sagawa T, Fujimoto S. Prognostic significance of lymph node metastasis and clear cell histology in ovarian carcinoma limited to the pelvis (pT1M0 and pT2M0). Gynecol Oncol 2000; 79:251-5. [PMID: 11063653 DOI: 10.1006/gyno.2000.5933] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND The prognostic significance of lymph node (LN) metastasis in clinically early-stage (pT1M0 or pT2M0) ovarian carcinoma has not yet been fully elucidated. METHODS From 1988 to 1997, 94 patients with ovarian carcinoma of pT1M0 (n = 78) or pT2M0 (n = 16) classification underwent surgery including systematic pelvic and paraaortic LN dissection. We investigated the prognostic factors of intraperitoneally determined early-stage ovarian carcinoma focusing on LN metastasis. RESULTS LN metastasis was seen in 5.1% of pT1M0 and in 31.3% of pT2M0 tumors. Univariate analysis of grade, histology (clear cell vs others), size of primary tumor, peritoneal cytology, and LN metastasis revealed that histology (P < 0.01), size of tumor (P < 0.05), and LN metastasis (P < 0.0005) were related to patient survival of early-stage ovarian carcinoma. Peritoneal cytology (P = 0.053) and grade (P = 0.059) had marginal statistical significance. A multivariate Cox regression analysis showed that clear cell histology (P < 0.05) and LN metastasis (P < 0. 005) are significant independent prognosticators of patient survival. Three (two with clear cell adenocarcinoma and one with mucinous adenocarcinoma) of nine patients with LN metastasis had died of the disease by the time of the present analysis. Two of the three deceased patients had recurrent tumors in distant organs (bone and brain/liver), one had pleural and peritoneal carcinomatosis, and no patients had retroperitoneal recurrence. This suggests that LN metastasis indicates that tumor cells may have already spread systemically at the time of treatment and, at the same time, retroperitoneal lymph node dissection (RPLND) may be effective in eradicating retroperitoneal metastasis in some instances of ovarian carcinoma. CONCLUSION Clear cell histology and LN metastasis are indicators of poor prognosis for patients with tumors limited to the pelvis. Therapeutic significance of systematic RPLND for pT1M0/pT2M0 ovarian carcinomas needs to be further investigated by randomized studies.
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Affiliation(s)
- N Sakuragi
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, North 15, West 7, Sapporo 060, Japan
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37
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Shikama T, Yamamoto S, Snider R, Fukao M, Nishitani T, Young K, Kasai S, Narui M, Broesch J, Matsuo H, Sagawa T. Fission-reactor-radiation-tests of MI-cables and magnetic coils for fusion burning plasma diagnostics. Fusion Engineering and Design 2000. [DOI: 10.1016/s0920-3796(00)00315-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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38
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Sagawa T, Fuiuno T, Sakuragi N, Kishida T, Yamada H, Fuiimoto S. Clinical study of cefpirome sulphate in obstetric and gynaecological infections. J Int Med Res 2000; 28:288-99. [PMID: 11191722 DOI: 10.1177/147323000002800605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Cefpirome sulphate is a fourth-generation cephem antibiotic, which has a broad spectrum of antibacterial activity against Gram-positive and -negative bacteria, and is highly stable to beta-lactamase. Cefpirome sulphate was administered to 166 patients with obstetric or gynaecological infections, and its clinical and antibacterial effect was evaluable in 139. Excluding seven patients who violated the study protocol by receiving concomitant drugs, the safety of cefpirome sulphate was assessed in 159 patients. In the 139 patients in whom efficacy was evaluated, the improvement rate was 80.6% (112/139) and the eradication rate 72.6% (45/62). The eradication rate for bacteria isolated from the patients at the start of the study was 84.7% (111/131). No resistance to cefpirome sulphate was observed in Enterococcus faecalis or Bacteroides species. Systemic erythema and nausea each occurred in one patient, and nine patients showed abnormal hepatic function test results. These results suggest that cefpirome sulphate is effective in the treatment of obstetric and gynaecological infections and has a good side-effect profile.
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Affiliation(s)
- T Sagawa
- Department of Obstetrics and Gynaecology, Hokkaido University School of Medicine, Sapporo, Japan.
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39
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Sagawa T, Yamada H, Yamamoto R, Sakuragi N, Fujimoto S. Two cases of endometrial cancer meeting new clinical criteria for hereditary nonpolyposis colorectal cancer. Gynecol Oncol 2000; 79:327-31. [PMID: 11063667 DOI: 10.1006/gyno.2000.5960] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/22/2022]
Abstract
BACKGROUND New clinical criteria for hereditary nonpolyposis colorectal cancer (HNPCC) that includes extracolonic cancers were recently proposed. We present 2 endometrial cancer patients who met the new criteria of 161 endometrial cancer patients. CASE REPORTS Case 1: A 55-year-old female was operated on for synchronous double primary cancers of the endometrium and rectum. She had also undergone an operation for metachronous ascending colon cancer at the age of 44. She had five relatives with a history of colorectal cancer. The rectal cancer tissue revealed no microsatellite instability (MSI). Case 2: A 48-year-old female underwent a radical operation for synchronous double primary cancers of the endometrium and ovaries. She had three relatives with a history of colorectal cancer. The endometrial cancer tissue showed high MSI. CONCLUSIONS The frequency of endometrial cancer patients meeting the new HNPCC criteria was 1.2% (2/161). These are the first case reports selected from consecutive endometrial cancer patients.
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Affiliation(s)
- T Sagawa
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, 060-8638, Japan.
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40
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Cho K, Matsuda T, Okajima S, Matsumoto Y, Sagawa T, Fujimoto S, Kobayashi K. Factors influencing pulmonary surfactant protein A levels in cord blood, maternal blood and amniotic fluid. Biol Neonate 2000; 75:104-10. [PMID: 9852361 DOI: 10.1159/000014085] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to evaluate factors that influence pulmonary surfactant protein A (SP-A) levels in cord blood, maternal blood and amniotic fluid, as well as to establish the normal range of serum SP-A. Labor significantly influenced cord blood SP-A levels. The SP-A levels in maternal blood after delivery were correlated with, but higher than those before delivery. There was a correlation between SP-A levels in amniotic fluid and cord blood. Neonatal serum SP-A was not correlated with maternal SP-A levels. The normal range of SP-A in cord blood was 2.7-21.7 ng/ml following cesarean section without labor, 4.8-50.2 ng/ml after labor at gestational weeks 36-38, and 12.2-44.6 ng/ml at gestational weeks 39-41. SP-A levels in maternal blood before and after delivery and amniotic fluid were 6. 0-74.0, 9.6-73.6 and 403.4-24,540 ng/ml, respectively.
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Affiliation(s)
- K Cho
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan.
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Furuta I, Yamada H, Sagawa T, Fujimoto S. Effects of inflammatory cytokines on prostaglandin E(2) production from human amnion cells cultured in serum-free condition. Gynecol Obstet Invest 2000; 49:93-7. [PMID: 10671814 DOI: 10.1159/000010222] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [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: 11/19/2022]
Abstract
The effects of five inflammatory cytokines, i.e. interleukin(IL)-1alpha, IL-1beta, IL-6, IL-8 and tumor necrosis factor-alpha (TNF-alpha) on prostaglandin E(2) (PGE(2)) production from amnion cells cultured in a serum-free condition was evaluated. After human amnion cells obtained from term placenta were incubated with the inflammatory cytokines at various concentrations, PGE(2) production in the culture supernatant was determined using an enzyme immunoassay method. Under a serum-free culture condition, an increase in PGE(2) production by IL-1alpha and IL-1beta was observed at concentrations of 10 and 100 ng/ml compared to control cultures. However, the increases in PGE(2) production by IL-6 and IL-8 were found at relatively high concentrations, i.e. at 100 and 200 ng/ml. TNF-alpha induced a significant increase in PGE(2) production at 50 and 100 ng/ml, but not at 200 ng/ml. These data suggest that these inflammatory cytokines directly stimulate PGE(2) production from amnion cells and may initiate premature labor if amniotic inflammatory cytokines are elevated, e.g. following intrauterine infection.
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Affiliation(s)
- I Furuta
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan.
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Jamil Chowdhury MA, Ihara H, Sagawa T, Hirayama C. Recognition of critical pairs of polycyclic aromatics on crystalline, liquid-crystalline and isotropic regions of silica-supported polymer in HPLC. Chromatographia 2000. [DOI: 10.1007/bf02490791] [Citation(s) in RCA: 5] [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: 10/24/2022]
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Chowdhury MA, Ihara H, Sagawa T, Hirayama C. Retention versatility of silica-supported comb-shaped crystalline and non-crystalline phases in high-performance liquid chromatography. J Chromatogr A 2000; 877:71-85. [PMID: 10845790 DOI: 10.1016/s0021-9673(00)00187-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Silica-supported comb-shaped polymer (Sil-ODA18) provided a specific selectivity towards aromatic and non-aromatic solutes. Selectivity of Sil-ODA18 and ODS (polymeric and monomeric) columns towards polycyclic aromatic hydrocarbons and geometric isomers have been discussed in respect of molecular shapes and sizes. The retention versatility of this phase arises from the orientation change on transition from the ordered crystalline to the less ordered non-crystalline state. Selectivity in the crystalline and non-crystalline regions of Sil-ODA18 is similar to that of polymeric and monomeric ODS phases, respectively. Sil-ODA18 column also exhibited the characteristic temperature dependency of liquid-crystalline phases, i.e., an increase in retention with increasing temperature on transition from crystalline to isotropic state.
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Affiliation(s)
- M A Chowdhury
- Graduate School of Science & Technology, Kumamoto University, Japan.
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Yamada H, Hoshi N, Kato EH, Ebina Y, Kishida T, Sagawa T, Matsuno K, Fujimoto S. Novel mutation (E113X) of antithrombin III gene (AT3) in a woman with gestational recurrent thrombosis. Am J Med Genet 2000; 91:348-50. [PMID: 10766996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
A 35-year-old Japanese woman with a low level (42-54%) of blood antithrombin (AT) III, experienced two induced abortions due to deep venous thrombosis at 8 weeks of gestation (GW) and cerebral thrombosis at 10 GW. The present pregnancy was successfully managed with intravenous administration of AT III (6,000-8,000 U/wk). Analysis of polymerase chain reaction (PCR)-single strand conformation polymorphism (SSCP) for exons 3A and 4 of the AT III gene (AT3) using her DNA revealed extra expansion bands with altered migration. The DNA sequencing demonstrated novel mutations in exon 3A of AT3: a G to T substitution at nucleotide position 5333 in codon GAG for Glu 113, causing a stop codon (E113X), and an A to T substitution at position 5338 in codon AAA for Lys 114, forming Asn (K114N). These novel mutations, especially E113X, in AT3 may be related to recurrent thrombosis in the pregnancy.
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Affiliation(s)
- H Yamada
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan.
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Sakuragi N, Hareyama H, Todo Y, Yamada H, Yamamoto R, Fujino T, Sagawa T, Fujimoto S. Prognostic significance of serous and clear cell adenocarcinoma in surgically staged endometrial carcinoma. Acta Obstet Gynecol Scand 2000; 79:311-6. [PMID: 10746848] [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: 02/16/2023]
Abstract
BACKGROUND The serous adenocarcinoma (SA) and clear cell adenocarcinoma (CCA) of endometrium have been shown to be associated with high relapse rate and poor survival. It is not clear whether prognostic significance of these specific cell types of tumor is independent of retroperitoneal lymph node metastasis and other histopathologic prognostic factors in endometrial carcinoma. METHODS We examined 240 consecutive patients with clinical stage I to stage III endometrial carcinoma who were treated prospectively with radical surgery and/or platinum-based chemotherapy. Surgery included extended hysterectomy, bilateral salpingo-oophorectomy, and systematic pelvic and paraaortic lymph node dissection. Prognostic significance of various histopathologic factors was determined by Cox regression analysis. RESULTS SA/CCA were more frequently associated with deep myometrial invasion, high nuclear grade (G3), lymph-vascular space invasion (LVSI), and pelvic lymph node metastasis when compared to endometrioid adenocarcinoma (EMA). Of 216 clinically staged stage I or II disease, seven of 12 cases of SA/CCA had extrauterine disease. This incidence was much higher than that for EMA (46/204) (p<0.01). A multivariate Cox regression analysis revealed that cell type, grade, LVSI, and paraaortic node metastasis (PANM) were independent prognosticators. CONCLUSIONS Prognosis of patients with endometrial carcinoma depends on cell type, grade, LVSI, and PANM. Poor prognosis for patients with SA/CCA is independent of lymph node metastasis and other histopathologic prognostic factors. The SA/CCA should be strictly discriminated from EMA.
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Affiliation(s)
- N Sakuragi
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan
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Kishida T, Hoshi N, Hattori R, Negishi H, Yamada H, Okuyama K, Hanatani K, Takagi T, Sagawa T, Fujimoto S. Efficacy of maternal serum screening in the prenatal detection of fetal chromosome abnormalities in Japanese women. Fetal Diagn Ther 2000; 15:112-7. [PMID: 10720877 DOI: 10.1159/000020987] [Citation(s) in RCA: 3] [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
OBJECTIVE This prospective study assesses the efficacy of maternal serum screening for use in prenatal diagnosis of fetal anomaly and chromosome imbalance in Japanese women. METHODS Maternal serum alpha-fetoprotein, human chorionic gonadotropin, and unconjugated estriol were measured in 1,055 singleton pregnant women between 14 and 20 weeks of gestation. A calculated risk for trisomy 21 of >/=1/299 or alpha-fetoprotein >/=2.5 multiples of the median was adopted as positive. RESULTS Three hundred and seventy-eight of the 1, 055 women screened (35.8%) were identified as positive. Sensitivity, false-positive rate, and positive predictive value in women aged <35 years were 60.0, 10.6, and 6.8%, respectively, and these values were 87.5, 49.3, and 4.2%, respectively, in women aged >/=35 years. The false-positive rate in women aged <35 years was significantly lower than that for women aged >/=35 years (p < 0.001). Chromosomal abnormalities were identified in 21 cases, including 10 with trisomy 21, 5 with trisomy 18, 2 with trisomy 13, and 4 with other chromosomal disorders. Seventeen of the 21 cases (81.0%) showed screen-positive results, and among these all 10 cases with trisomy 21 were detectable. Two cases with trisomy 18, 1 with trisomy 13 and 1 with isochromosome X showed extremely low human chorionic gonadotropin levels (0.4 +/- 0.1 multiples of the median, mean +/- SE), although they were screen negative. Of the 264 women who did not undergo amniocentesis, none had any clinical findings consistent with aneuploidy after birth. CONCLUSIONS Our results suggest that the evaluation of each serum marker, as well as of the calculated risk, was significantly important in the prenatal detection of fetal aneuploidy.
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Affiliation(s)
- T Kishida
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan.
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Cho K, Matsuda T, Okajima S, Matsumoto Y, Sagawa T, Fujimoto S, Kobayashi K. Prediction of respiratory distress syndrome by the level of pulmonary surfactant protein A in cord blood sera. Biol Neonate 2000; 77:83-7. [PMID: 10657683 DOI: 10.1159/000014198] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to determine the utility of measuring the level of pulmonary surfactant protein A (SP-A) in cord blood sera to predict for respiratory distress syndrome (RDS). SP-A levels in cord blood sera from 48 infants born at gestational ages < 32 weeks were measured by a sandwich ELISA system. Mean value of SP-A in cord blood was 5.8 ng/ml in cases with RDS and 15.1 ng/ml in those without RDS (p = 0.002). The best cut-off point of cord blood SP-A to predict RDS was determined as 10 ng/ml. The sensitivity and the specificity of the cut-off point for predicting RDS were 81 and 76%, respectively. Multivariate regression analysis showed that high SP-A level in cord blood, premature rupture of the membranes longer than 24 h and heavy birth weight were all significantly related to the non-RDS outcome.
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Affiliation(s)
- K Cho
- Departments of Obstetrics and Gynecology, and Pediatrics, Hokkaido University School of Medicine, Sapporo, Japan.
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Kishida T, Yamada H, Forma I, Kobayashi N, Kusaka T, Hirayama E, Ebina Y, Okuyama K, Sagawa T, Fujimoto S. Increased levels of interleukin-6 in cervical secretions are correlated with preterm premature rupture of the membranes. Int J Gynaecol Obstet 2000. [DOI: 10.1016/s0020-7292(00)83234-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Furukawa T, Yamakawa T, Midera T, Sagawa T, Mori Y, Nukada T. Selectivities of dihydropyridine derivatives in blocking Ca(2+) channel subtypes expressed in Xenopus oocytes. J Pharmacol Exp Ther 1999; 291:464-73. [PMID: 10525060] [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: 02/14/2023] Open
Abstract
Some dihydropyridines (DHPs), such as amlodipine and cilnidipine, have been shown to block not only L-type but also N-type Ca(2+) channels; therefore, DHPs are no longer considered as L-type-specific Ca(2+) channel blockers. However, selectivity of DHPs for Ca(2+) channel subtypes including N-, P/Q-, and R-types are poorly understood. To address this issue at the molecular level, blocking effects of 10 DHPs (nifedipine, nilvadipine, barnidipine, nimodipine, nitrendipine, amlodipine, nicardipine, benidipine, felodipine, and cilnidipine) on four subtypes of Ca(2+) channels (L-, N-, P/Q-, and R-types) were investigated in the Xenopus oocyte expression system with the use of the two-microelectrode voltage-clamp technique. L-type Ca(2+) channels expressed as alpha(1C)alpha(2)beta(1a) combination were profoundly blocked by all DHPs examined, whereas blocking actions of these DHPs on R-type (alpha(1E)alpha(2)beta(1a)) channels were equally weak. In contrast, 5 of the 10 DHPs (amlodipine, benidipine, cilnidipine, nicardipine, and barnidipine) significantly blocked N-type (alpha(1B)alpha(2)beta(1a)) and P/Q-type (alpha(1A)alpha(2)beta(1a)) Ca(2+) channels. These selectivities of DHPs in blocking Ca(2+) channel subtypes would provide useful pharmacological and clinical information on the mode of action of the drugs including side effects and adverse effects.
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Affiliation(s)
- T Furukawa
- Department of Medicine, Teikyo University School of Medicine, Tokyo, Japan.
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Yamashita Y, Sagawa T, Fujimoto T, Sugawara T, Yamada H, Hoshi N, Sakuragi N, Ishioka C, Fujimoto S. BRCA1 mutation testing for Japanese patients with ovarian cancer in breast cancer screening. Breast Cancer Res Treat 1999; 58:11-7. [PMID: 10634513 DOI: 10.1023/a:1006276612414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 11/12/2022]
Abstract
From February 1996 to April 1998, 2967 women received screening for breast cancer in the gynecologic ambulatory practice of the Hokkaido University Hospital. In 116 Japanese women with epithelial ovarian cancer, mutation analysis of BRCA1 exon 11 in genomic DNA was performed by the stop codon (SC) assay and DNA sequence analysis. Clinicopathological factors were also investigated in these patients. The aim of this study was to examine the advantages of performing BRCA1 mutation testing for ovarian cancer patients during breast cancer screening. We achieved a high detection rate (6.0%) of patients with germline mutations in BRCA1. The high frequencies of breast ovarian cancer syndrome, serous adenocarcinoma, high histological grades, advanced FIGO stages, and breast cancer as double cancer were found to be characteristic of ovarian cancer with germline mutations in BRCA1. These characteristics may assist physicians in selecting BRCA1 mutation testing for ovarian cancer patients. The mean age at diagnosis of ovarian cancer was 51.0 and 51.2 years in the groups with and without mutation, respectively, and no difference was found in age at diagnosis. All of the nine living female mutation carriers were offered the options of increased surveillance or prophylactic surgery, and all chose the former. We have performed breast cancer screening and/or ovarian cancer screening every 6 months for these carriers. This may allow another advantage in establishing a relationship of mutual trust with a patient from a series of responsible follow-ups.
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Affiliation(s)
- Y Yamashita
- Department of Obstetrics and Gynecology, Hokkaido University School of Medicine, Sapporo, Japan
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