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Kanazawa M, Miura M, Toriyabe M, Koyama M, Hatakeyama M, Ishikawa M, Nakajima T, Onodera O, Nishizawa M, Shimohata T. Preconditioned protective microglia by oxygen-glucose deprivation promote functional recovery in ischemic rats. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3694] [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: 11/25/2022]
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Terauchi Y, Koyama M, Cheng X, Sumi M, Riddle MC, Bolli GB, Hirose T. Glycaemic control and hypoglycaemia with insulin glargine 300 U/mL compared with glargine 100 U/mL in Japanese adults with type 2 diabetes using basal insulin plus oral anti-hyperglycaemic drugs (EDITION JP 2 randomised 12-month trial including 6-month extension). Diabetes Metab 2017; 43:446-452. [PMID: 28433560 DOI: 10.1016/j.diabet.2017.03.001] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/22/2017] [Accepted: 03/10/2017] [Indexed: 10/19/2022]
Abstract
AIMS To compare insulin glargine 300 U/mL (Gla-300) with glargine 100 U/mL (Gla-100) in Japanese adults with uncontrolled type 2 diabetes on basal insulin and oral anti-hyperglycaemic drugs over 12 months. METHODS EDITION JP 2 was a randomised, open-label, phase 3 study. Following a 6-month treatment period, participants continued receiving previously assigned once daily Gla-300 or Gla-100, plus oral anti-hyperglycaemic drugs, in a 6-month extension period. Glycaemic control, hypoglycaemia and adverse events were assessed. RESULTS The 12-month completion rate was 88% for Gla-300 and 96% for Gla-100, with comparable reasons for discontinuation. Mean HbA1c decrease from baseline to month 12 was 0.3% in both groups. Annualised rates of confirmed (≤3.9mmol/L [≤70mg/dL]) or severe hypoglycaemia were lower with Gla-300 than Gla-100 (nocturnal [00:00-05:59h]: rate ratio 0.41; 95% confidence interval: 0.18 to 0.92; anytime [24h]: rate ratio 0.64; 95% confidence interval: 0.44 to 0.94). Cumulative number of hypoglycaemic events was lower with Gla-300 than Gla-100. Adverse event profiles were comparable between treatments. CONCLUSION Over 12 months, Gla-300-treated participants achieved sustained glycaemic control and experienced less hypoglycaemia, particularly at night, versus Gla-100, supporting 6-month results.
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Affiliation(s)
- Y Terauchi
- Yokohama City University Graduate School of Medicine, Department of Endocrinology and Metabolism, 3-9 Fukuura, Kanazawa-ku, 236-0004 Yokohama, Japan.
| | - M Koyama
- Sanofi, 3-20-2 Nishi-Shinjuku, Shinjuku-ku, 163-1488 Tokyo, Japan.
| | - X Cheng
- Sanofi, 112 Jianguo Road, Chaoyang District, 100022 Beijing, China.
| | - M Sumi
- Sanofi, 3-20-2 Nishi-Shinjuku, Shinjuku-ku, 163-1488 Tokyo, Japan.
| | - M C Riddle
- Oregon Health and Science University, 3181 Southwest Sam Jackson Park Road, 97239 Portland, OR, USA.
| | - G B Bolli
- Perugia University School of Medicine, Ospedale Santa Maria della Misericordia, 06132 Perugia, Italy.
| | - T Hirose
- Toho University School of Medicine, 5 Chome-21-16 Omorinishi, Ota, 143-8540 Tokyo, Japan.
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Yamamoto Y, Miyagawa Y, Ehara T, Koyama M, Nakamura S, Takeuchi D, Muranaka F, Kitazawa M, Miyagawa S. Three Cases of Pseudo-Meigs' Syndrome Secondary to Ovarian Metastases from Colorectal Cancer. Case Rep Surg 2017; 2017:5235368. [PMID: 28373923 PMCID: PMC5360969 DOI: 10.1155/2017/5235368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 01/18/2017] [Accepted: 02/22/2017] [Indexed: 11/17/2022] Open
Abstract
Pseudo-Meigs' syndrome is used to describe cases of ascites and/or pleural effusion associated with ovarian neoplasms other than benign tumors, which improve after removal of the ovarian lesion. We present three cases of pseudo-Meigs' syndrome secondary to ovarian metastasis from colorectal cancer. In case 1, the patient has severe dyspnea and hypoxia due to massive right pleural effusion; therefore preoperative thoracic drainage was needed. In case 2, the patient needed paracentesis every two or three days to improve abdominal distension. After two courses of 5-fluorouracil, levofolinate, and oxaliplatin (mFOLFOX6), her ascites could be controlled by diuretics without aspiration and her general condition improved. Then she underwent operation. In case 3, the patient developed a massive pleural effusion and ascites coincident with a rapid enlargement of ovarian tumor after resection and adjuvant chemotherapy for rectal cancer. In all cases, pleural effusions and/or ascites resolved and general conditions and daily activities of the patients improved after oophorectomy. They are all currently in good health without recurrence of pleural effusion or ascites. In patients with suspected pseudo-Meigs' syndrome secondary to ovarian metastasis of colorectal cancer, operation including oophorectomy may reduce pleural effusions and/or ascites and improve the general condition.
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Affiliation(s)
- Yuta Yamamoto
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yusuke Miyagawa
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takehito Ehara
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Makoto Koyama
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Satoshi Nakamura
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Daisuke Takeuchi
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Futoshi Muranaka
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Masato Kitazawa
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Shinichi Miyagawa
- Department of Gastroenterological Surgery, Shinshu University School of Medicine, Matsumoto, Japan
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Koyama M, Kitazawa M, Ehara T, Yamamoto Y, Suzuki A, Miyagawa Y, Miyagawa S. [Two Cases of Fournier's Gangrene That Occurred during Chemotherapy for Rectal Cancer]. Gan To Kagaku Ryoho 2017; 44:169-171. [PMID: 28223677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two cases of Fournier's gangrene occurred during chemotherapy for advanced rectal cancer. Patients were treated using surgical debridement and antibiotic therapy. Case 1: A 66-year-old man had advanced rectal cancer with para-aortic and inguinal lymph node metastases. He received a sigmoid colostomy and chemotherapy(capecitabine, oxaliplatin, bevacizumab). Due to progression of the rectal mass, we performed radiotherapy(30 Gy)and chemotherapy(irinotecan, S-1, bevacizumab). After 14 days, he was hospitalized with a diagnosis of Fournier's gangrene with anal pain and fever. Case 2: A 63-year-old man had mucinous rectal carcinoma with sacrum invasion. He received a sigmoid colostomy and chemotherapy. Sixteen days after regorafenib therapy, as a fifth-line of chemotherapy, he was hospitalized with a diagnosis of Fournier's gangrene with hip pain, swollen perineum, and fever. There have been no reports of Fournier's gangrene occurring during chemotherapy for rectal cancer. We report 2 cases with a review of literature.
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Affiliation(s)
- Makoto Koyama
- Dept. of Digestive Surgery, Shinshu University School of Medicine
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Uemura R, Tachibana D, Kurihara Y, Pooh RK, Aoki Y, Koyama M. Prenatal findings of hypertrophic cardiomyopathy in a severe case of Costello syndrome. Ultrasound Obstet Gynecol 2016; 48:799-800. [PMID: 26916728 DOI: 10.1002/uog.15888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 02/12/2016] [Accepted: 02/18/2016] [Indexed: 06/05/2023]
Affiliation(s)
- R Uemura
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - R K Pooh
- CRIFM Clinical Research Institute of Fetal Medicine PMC, Osaka, Japan
| | - Y Aoki
- Department of Medical Genetics, Tohoku University School of Medicine, Sendai, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
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Takagi S, Koyama M, Hayashi K, Kawauchi T. Image Quality Required for the Diagnosis of Skull Fractures Using Head CT: A Comparison of Conventional and Improved Reconstruction Kernels. AJNR Am J Neuroradiol 2016; 37:1992-1995. [PMID: 27418472 DOI: 10.3174/ajnr.a4861] [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] [Received: 02/21/2016] [Accepted: 05/05/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although skull fractures are generally assessed on bone images obtained by using head CT, the combined multikernel technique that enables evaluation of both brain and bone through a change in the window settings of an image set has been reported. The purpose of this retrospective study was to determine the image quality required for the accurate assessment of skull fractures by using head CT. MATERIALS AND METHODS A random sample of 50 patients (25 nonfracture and 25 simple nondisplaced skull fractures) was selected, and sets of conventional brain and bone images and improved combined multikernel images were reconstructed (4614 images). Three radiologists indicated their confidence levels regarding the presence of skull fractures by marking on a continuous scale for each image set. The mean area under the receiver operating characteristic curve was calculated for each kernel, and the statistical significance of differences was tested by using the Dorfman-Berbaum-Metz method. RESULTS Although a difference in the diagnostic performance of the 3 radiologists was suggested, the mean area under the curve value showed no significant differences among the 3 reconstruction kernels (P = .95 [bone versus combined]), P = .91 [bone versus brain]), and P = .88 [brain versus combined]). However, the quality of brain images was distinctly poorer than the quality of the other 2 images. CONCLUSIONS There was no significant difference in the diagnostic performance of brain, bone, and combined multikernel images for skull fractures. Skull fracture diagnosis is made possible by brain image assessments. Combined multikernel images offer the advantage of high-quality brain and bone images.
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Affiliation(s)
- S Takagi
- From the Faculty of Health Sciences (S.T.), Hokkaido University, Hokkaido, Japan
| | - M Koyama
- Radiological Center (M.K.), National Defense Medical College Hospital, Saitama, Japan
| | - K Hayashi
- Department of Radiology (K.H., T.K.), National Defense Medical College, Saitama, Japan
| | - T Kawauchi
- Department of Radiology (K.H., T.K.), National Defense Medical College, Saitama, Japan
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Yamamoto Y, Kitazawa M, Koyama M, Imai S, Sugiyama S, Miyagawa Y, Suzuki A, Miyagawa S. KRAS mutations of colorectal cancer -clinical analysis as a prognostic factor and in vitro assay of proliferation-. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw521.014] [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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Terauchi Y, Koyama M, Cheng X, Takahashi Y, Riddle MC, Bolli GB, Hirose T. New insulin glargine 300 U/ml versus glargine 100 U/ml in Japanese people with type 2 diabetes using basal insulin and oral antihyperglycaemic drugs: glucose control and hypoglycaemia in a randomized controlled trial (EDITION JP 2). Diabetes Obes Metab 2016; 18:366-74. [PMID: 26662838 PMCID: PMC5066636 DOI: 10.1111/dom.12618] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/01/2015] [Accepted: 11/30/2015] [Indexed: 12/27/2022]
Abstract
AIMS To compare the efficacy and safety of insulin glargine 300 U/ml (Gla-300) with glargine 100 U/ml (Gla-100) in Japanese people with type 2 diabetes using basal insulin plus oral antihyperglycaemic drug(s) [OAD(s)]. METHODS The EDITION JP 2 study (NCT01689142) was a 6-month, multicentre, open-label, phase III study. Participants (n = 241, male 61%, mean diabetes duration 14 years, mean weight 67 kg, mean body mass index 25 kg/m(2), mean glycated haemoglobin (HbA1c) 8.02 %, mean basal insulin dose 0.24 U/kg/day) were randomized to Gla-300 or Gla-100, while continuing OAD(s). Basal insulin was titrated to target fasting self-monitored plasma glucose 4.4-5.6 mmol/l. The primary efficacy endpoint was HbA1c change over 6 months. Safety endpoints included hypoglycaemia and weight change. RESULTS Gla-300 was non-inferior to Gla-100 for HbA1c reduction [least squares (LS) mean difference 0.10 (95% confidence interval [CI] -0.08, 0.27) %]. The mean HbA1c at month 6 was 7.56 and 7.52 % with Gla-300 and Gla-100, respectively. Nocturnal confirmed (≤3.9 mmol/l) or severe hypoglycaemia risk was 38% lower with Gla-300 versus Gla-100 [relative risk 0.62 (95% CI 0.44, 0.88)]; annualized rates were 55% lower at night [rate ratio 0.45 (95% CI 0.21, 0.96)] and 36% lower at any time [24 h; rate ratio 0.64 (95% CI 0.43, 0.96)]. Severe hypoglycaemia was infrequent. A significant between-treatment difference in weight change favoured Gla-300 [LS mean difference -1.0 (95% CI -1.5, -0.5) kg; p = 0.0003]. Adverse event rates were comparable between groups. CONCLUSIONS Japanese people with type 2 diabetes using basal insulin plus OAD(s) experienced less hypoglycaemia with Gla-300 than with Gla-100, while glycaemic control did not differ.
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Affiliation(s)
- Y Terauchi
- Graduate School of Medicine, Yokohama City University, Yokohama, Japan
| | | | | | | | - M C Riddle
- Oregon Health & Science University, Portland, OR, USA
| | - G B Bolli
- Perugia University Medical School, Perugia, Italy
| | - T Hirose
- Toho University School of Medicine, Tokyo, Japan
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Matsuhisa M, Koyama M, Cheng X, Takahashi Y, Riddle MC, Bolli GB, Hirose T. New insulin glargine 300 U/ml versus glargine 100 U/ml in Japanese adults with type 1 diabetes using basal and mealtime insulin: glucose control and hypoglycaemia in a randomized controlled trial (EDITION JP 1). Diabetes Obes Metab 2016; 18:375-83. [PMID: 26662964 PMCID: PMC5066635 DOI: 10.1111/dom.12619] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/01/2015] [Accepted: 11/30/2015] [Indexed: 12/24/2022]
Abstract
AIM To compare efficacy and safety of new insulin glargine 300 U/ml (Gla-300) with that of insulin glargine 100 U/ml (Gla-100) in Japanese adults with type 1 diabetes. METHODS The EDITION JP 1 study (NCT01689129) was a 6-month, multicentre, open-label, phase III study. Participants (n = 243) were randomized to Gla-300 or Gla-100 while continuing mealtime insulin. Basal insulin was titrated with the aim of achieving a fasting self-monitored plasma glucose target of 4.4-7.2 mmol/l. The primary endpoint was change in glycated haemoglobin (HbA1c) over 6 months. Safety measures included hypoglycaemia and change in body weight. RESULTS Gla-300 was non-inferior to Gla-100 for the primary endpoint of HbA1c change over the 6-month period {least squares [LS] mean difference 0.13 % [95 % confidence interval (CI) -0.03 to 0.29]}. The annualized rate of confirmed (≤3.9 mmol/l) or severe hypoglycaemic events was 34 % lower with Gla-300 than with Gla-100 at night [rate ratio 0.66 (95 % CI 0.48-0.92)] and 20 % lower at any time of day [24 h; rate ratio 0.80 (95 % CI 0.65-0.98)]; this difference was most pronounced during the first 8 weeks of treatment. Severe hypoglycaemia was infrequent. The basal insulin dose increased in both groups (month 6 dose: Gla-300 0.35 U/kg/day, Gla-100 0.29 U/kg/day). A between-treatment difference in body weight change over 6 months favouring Gla-300 was observed [LS mean difference -0.6 kg (95 % CI -1.1 to -0.0); p = 0.035]. Adverse event rates were comparable between the groups. CONCLUSIONS In Japanese adults with type 1 diabetes using basal plus mealtime insulin, less hypoglycaemia was observed with Gla-300 than with Gla-100, particularly during the night, while glycaemic control did not differ.
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Affiliation(s)
| | | | | | | | - M C Riddle
- Oregon Health & Science University, Portland, OR, USA
| | - G B Bolli
- Perugia University Medical School, Perugia, Italy
| | - T Hirose
- Toho University School of Medicine, Tokyo, Japan
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Hamuro A, Tachibana D, Wang H, Hayashi M, Yanai S, Kurihara Y, Misugi T, Katayama H, Nakano A, Koyama M. Combined reconstructive surgery involving uterosacral colpopexy and anterior vaginal mesh implantation for pelvic organ prolapse. J Obstet Gynaecol Res 2016; 42:707-15. [DOI: 10.1111/jog.12952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 11/14/2015] [Accepted: 12/22/2015] [Indexed: 12/21/2022]
Affiliation(s)
- A. Hamuro
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - D. Tachibana
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - H. Wang
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - M. Hayashi
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - S. Yanai
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - Y. Kurihara
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - T. Misugi
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - H. Katayama
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - A. Nakano
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
| | - M. Koyama
- Division of Women's Life Care Medicine, Department of Obstetrics and Gynecology; Osaka City University Graduate School of Medicine; Osaka Japan
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Tachibana D, Kurihara Y, Wada N, Kitada K, Nakagawa K, Koyama M. Flow velocity waveforms of the ductus venosus and atrioventricular valves in a case of fetal hemangiolymphangioma. Ultrasound Obstet Gynecol 2015; 46:744-745. [PMID: 25766974 DOI: 10.1002/uog.14848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/01/2015] [Accepted: 03/10/2015] [Indexed: 06/04/2023]
Affiliation(s)
- D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - N Wada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - K Kitada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - K Nakagawa
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi Abenoku, Osaka, Japan
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Fujiwara J, Sowa Y, Horinaka M, Koyama M, Wakada M, Miki T, Sakai T. The anti-obesity drug orlistat promotes sensitivity to TRAIL by two different pathways in hormone-refractory prostate cancer cells. Int J Oncol 2015; 48:854. [PMID: 26648205 PMCID: PMC4725453 DOI: 10.3892/ijo.2015.3265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 10/21/2011] [Accepted: 12/14/2011] [Indexed: 11/06/2022] Open
Abstract
After the publication of the article, the authors noted that in Fig. 5c, the image of β-actin is incorrect. The corrected version of Fig. 5c is shown below. In Fig. 6a, the histogarms are incorrect, and the corrected Fig. 6a is shown below. In Fig. 7, the figure of PrEC is incorrect, and the corrected Fig. 7 (PrEC) is shown below. The corrected figures demonstrate the same findings as the original figures. These corrections do not alter the interpretation of the results and conclusions. [the original article was published in the International Journal of Oncology 40: 1483-1491, 2012; DOI: 10.3892/ijo.2012.1353].
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Affiliation(s)
- Jun Fujiwara
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Yoshihiro Sowa
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Mano Horinaka
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Makoto Koyama
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Miki Wakada
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Tsuneharu Miki
- Department of Urology, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
| | - Toshiyuki Sakai
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Wada N, Tachibana D, Kurihara Y, Nakagawa K, Nakano A, Terada H, Tanaka K, Fukui M, Koyama M, Hecher K. Alterations in time intervals of ductus venosus and atrioventricular flow velocity waveforms in growth-restricted fetuses. Ultrasound Obstet Gynecol 2015; 46:221-226. [PMID: 25366537 DOI: 10.1002/uog.14717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 10/14/2014] [Accepted: 10/22/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate time intervals of the ductus venosus (DV) flow velocity waveform (FVW) and those of the cardiac cycle that correspond with each DV-FVW component in fetuses with intrauterine growth restriction (IUGR) due to placental insufficiency. METHODS Women with a pregnancy complicated by IUGR were recruited into the study, as was a normal control group. Time intervals for systolic (S) and diastolic (D) components were measured in DV-FVW as follows: S(DV), from the nadir of the a-wave during atrial contraction to the nadir between the S-wave and D-wave; D(DV), from the nadir between S-wave and D-wave to the nadir of the a-wave. Regarding cardiac cycles, the following variables were measured from ventricular inflow through the tricuspid valve (TV) and mitral valve (MV): S(TV) and S(MV), from the second peak of ventricular inflow caused by atrial contraction (A-wave) to the opening of the atrioventricular valve; D(TV) and D(MV), from the opening of the atrioventricular valve to the peak of the A-wave. In the IUGR group, only the last examination performed within 1 week of delivery was used for analysis. All variables were analyzed statistically using Z-scores. RESULTS Data were obtained from 249 normal fetuses and 26 fetuses with IUGR. Compared to normal fetuses, S(DV) showed a significant decrease (P < 0.001), while D(DV) showed a significant increase (P < 0.001) in the IUGR group. Regarding cardiac cycles, S(TV) and S(MV) showed significant decreases (P = 0.014 and P < 0.001, respectively) and D(TV) and D(MV) showed significant increases (P = 0.008 and P = 0.002, respectively) in fetuses with IUGR. CONCLUSION Time-interval alterations of DV-FVW in growth-restricted fetuses reflect the hemodynamic events caused by placental insufficiency.
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Affiliation(s)
- N Wada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Y Kurihara
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Nakagawa
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - A Nakano
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - H Terada
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Tanaka
- Department of Obstetrics and Gynecology, Osaka City General Hospital, Osaka, Japan
| | - M Fukui
- Laboratory of Statistics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - M Koyama
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - K Hecher
- Department of Obstetrics and Fetal Medicine, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
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Takahashi B, Funami H, Iwaki T, Maruoka H, Nagahira A, Koyama M, Kamiide Y, Matsuo T, Muto T, Annoura H. 2-Aminoalkyl nicotinamide derivatives as pure inverse agonists of the ghrelin receptor. Bioorg Med Chem Lett 2015; 25:2707-12. [DOI: 10.1016/j.bmcl.2015.04.040] [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] [Received: 01/16/2015] [Revised: 03/21/2015] [Accepted: 04/13/2015] [Indexed: 12/24/2022]
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65
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Tachibana D, Glosemeyer P, Diehl W, Nakagawa K, Wada N, Kurihara Y, Fukui M, Koyama M, Hecher K. Time-interval analysis of ductus venosus flow velocity waveforms in twin-to-twin transfusion syndrome treated with laser surgery. Ultrasound Obstet Gynecol 2015; 45:544-550. [PMID: 24975921 DOI: 10.1002/uog.13449] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/15/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVES To investigate time-interval variables of ductus venosus (DV) flow velocity waveforms (FVWs) in twin-to-twin transfusion syndrome (TTTS), comparing the results with reference ranges from normal singleton fetuses. The impact of laser surgery and the effect of prognostic factors were also evaluated. METHODS In 107 TTTS cases, DV-FVWs of both recipients and donors were recorded 1 day before and 2 days after laser therapy. Time intervals for systolic (S) and early diastolic (D) peaks were analyzed retrospectively with regard to acceleration time (acc-S and acc-D for S and D, respectively) and deceleration time (dec-S and dec-D for S and D, respectively). For each variable, Z-scores were calculated with respect to previously reported normal reference ranges. RESULTS Z-scores for all variables showed statistically significant differences from those observed previously in normal fetuses, with the exception of dec-S of donors. The most striking differences were observed in longer dec-S of recipients (P < 0.001) and longer dec-D of donors (P < 0.001). Laser therapy showed significant impact on dec-S and acc-D in recipients and on all variables in donors. Regarding the short-term prognosis, acc-S and dec-S showed significant differences for the prediction of intrauterine fetal demise in donors (P = 0.009 and P = 0.011, respectively). CONCLUSION This study demonstrates that time-interval variables of DV-FVWs may differentiate the characteristic hemodynamic changes caused by unbalanced blood volume between recipients and donors.
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Affiliation(s)
- D Tachibana
- Department of Obstetrics and Gynecology, Osaka City University Graduate School of Medicine, Osaka, Japan; Department of Obstetrics and Fetal Medicine, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
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Shiramoto M, Eto T, Irie S, Fukuzaki A, Teichert L, Tillner J, Takahashi Y, Koyama M, Dahmen R, Heise T, Becker RHA. Single-dose new insulin glargine 300 U/ml provides prolonged, stable glycaemic control in Japanese and European people with type 1 diabetes. Diabetes Obes Metab 2015; 17:254-60. [PMID: 25425297 PMCID: PMC4342764 DOI: 10.1111/dom.12415] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/06/2014] [Accepted: 11/17/2014] [Indexed: 12/22/2022]
Abstract
AIMS Two single-dose studies were conducted in Japan and Europe to compare the pharmacokinetic (PK) and pharmacodynamic (PD) profiles of new insulin glargine 300 U/ml (Gla-300) and insulin glargine 100 U/ml (Gla-100) in people with type 1 diabetes mellitus. METHODS In two double-blind, randomized, crossover studies, 18 Japanese participants (aged 20-65 years) and 24 European participants (aged 18-65 years) with glycated haemoglobin levels ≤9.0% (≤75 mmol/mol) received single subcutaneous doses of Gla-300, 0.4, 0.6 and 0.9 U/kg (0.9 U/kg in the European study only), and Gla-100, 0.4 U/kg. A 36-h euglycaemic clamp procedure was performed after each dosing. RESULTS The serum insulin glargine concentration (INS) and glucose infusion rate (GIR) developed more gradually into more constant and prolonged profiles with Gla-300 than with Gla-100. In support of this, the times to 50% of glargine exposure and insulin activity were longer for all Gla-300 doses than for Gla-100 during the 36-h clamp period, indicating a more evenly distributed exposure and metabolic effect beyond 24 h. Exposure to insulin glargine and glucose utilization were lower with the 0.4 and 0.6 U/ml Gla-300 doses in both studies compared with the 0.4 U/ml Gla-100 dose. Glucose-lowering activity was detected for up to 36 h with all doses of Gla-300. CONCLUSIONS Single-dose injections of Gla-300 present more constant and prolonged PK and PD profiles compared with Gla-100, maintaining blood glucose control for up to 36 h in euglycaemic clamp settings in Japanese and European participants with type 1 diabetes.
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Affiliation(s)
- M Shiramoto
- Hakata Clinic, LTA Clinical Pharmacology Center, Fukuoka, Japan
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67
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Tachibana D, Koyama M, Saito M, Hoshi M, Imai R, Kamada T. Heavy ion radiotherapy for recurrent metastatic lung tumor during pregnancy. Eur J Obstet Gynecol Reprod Biol 2015; 184:127. [DOI: 10.1016/j.ejogrb.2014.11.016] [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] [Received: 10/31/2014] [Revised: 11/04/2014] [Accepted: 11/11/2014] [Indexed: 11/30/2022]
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Takahashi B, Funami H, Shibata M, Maruoka H, Koyama M, Kanki S, Muto T. Structural Optimization of Ghrelin Receptor Inverse Agonists to Improve Lipophilicity and Avoid Mechanism-Based CYP3A4 Inactivation. Chem Pharm Bull (Tokyo) 2015; 63:825-32. [DOI: 10.1248/cpb.c15-00285] [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: 11/22/2022]
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69
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Koyama M, Sowa Y, Horinaka M, Goda AE, Fujiwara J, Sakai T. Peroxisome proliferator-activated receptor γ ligand troglitazone and TRAIL synergistically induce apoptosis. Oncol Rep 2013; 31:947-54. [PMID: 24276615 DOI: 10.3892/or.2013.2868] [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] [Received: 09/19/2013] [Accepted: 10/25/2013] [Indexed: 11/06/2022] Open
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is known to cause apoptosis in several types of malignant tumor cells through its interaction with the death domain-containing receptor, death receptor 5 (DR5). In the present study, we showed that co-treatment with troglitazone (TGZ), a synthetic ligand of peroxisome proliferator-activated receptor γ (PPARγ), and TRAIL synergistically induced apoptosis through DR5 upregulation in human colon cancer DLD-1 cells. TGZ elevated DR5 expression at the promoter level through the CCAAT/enhancer-binding protein homologous protein (CHOP) binding site. These results suggest that combined treatment with TGZ and TRAIL may be promising as a new therapy against malignant tumors.
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Affiliation(s)
- Makoto Koyama
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Yoshihiro Sowa
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Mano Horinaka
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Ahmed E Goda
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Jun Fujiwara
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Toshiyuki Sakai
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
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Koyama M, Hashimoto D, Nagafuji K, Eto T, Ohno Y, Aoyama K, Iwasaki H, Miyamoto T, Hill GR, Akashi K, Teshima T. Expansion of donor-reactive host T cells in primary graft failure after allogeneic hematopoietic SCT following reduced-intensity conditioning. Bone Marrow Transplant 2013; 49:110-5. [PMID: 24013691 DOI: 10.1038/bmt.2013.134] [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] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 07/02/2013] [Accepted: 07/22/2013] [Indexed: 11/09/2022]
Abstract
Graft rejection remains a major obstacle in allogeneic hematopoietic SCT following reduced-intensity conditioning (RIC-SCT), particularly after cord blood transplantation (CBT). In a murine MHC-mismatched model of RIC-SCT, primary graft rejection was associated with activation and expansion of donor-reactive host T cells in peripheral blood and BM early after SCT. Donor-derived dendritic cells are at least partly involved in host T-cell activation. We then evaluated if such an expansion of host T cells could be associated with graft rejection after RIC-CBT. Expansion of residual host lymphocytes was observed in 4/7 patients with graft rejection at 3 weeks after CBT, but in none of the 17 patients who achieved engraftment. These results suggest the crucial role of residual host T cells after RIC-SCT in graft rejection and expansion of host T cells could be a marker of graft rejection. Development of more efficient T cell-suppressive conditioning regimens may be necessary in the context of RIC-SCT.
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Affiliation(s)
- M Koyama
- 1] Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Science, Fukuoka, Japan [2] Bone Marrow Transplantation Laboratory, Queensland Institute of Medical Research, Brisbane, Queensland, Australia
| | - D Hashimoto
- Department of Hematology, Hokkaido University Graduate School of Medical Science, Sapporo, Japan
| | - K Nagafuji
- Department of Hematology, Kurume University, Fukuoka, Japan
| | - T Eto
- Department of Hematology, Hamanomachi General Hospital, Fukuoka, Japan
| | - Y Ohno
- Internal medicine, Kitakyushu Municipal Medical Center, Kitakyushu, Japan
| | - K Aoyama
- Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Science, Fukuoka, Japan
| | - H Iwasaki
- Center for Cellular and Molecular Medicine, Kyushu University Graduate School of Medical Science, Fukuoka, Japan
| | - T Miyamoto
- Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Science, Fukuoka, Japan
| | - G R Hill
- Bone Marrow Transplantation Laboratory, Queensland Institute of Medical Research, Brisbane, Queensland, Australia
| | - K Akashi
- 1] Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Science, Fukuoka, Japan [2] Center for Cellular and Molecular Medicine, Kyushu University Graduate School of Medical Science, Fukuoka, Japan
| | - T Teshima
- Department of Hematology, Hokkaido University Graduate School of Medical Science, Sapporo, Japan
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Kawamukai M, Koyama M, Nishida J, Kouzu H, Muranaka A, Kokubu N, Yuda S, Hashimoto A, Tsuchihashi K, Miura T. Prognostic evaluation of patients with pulmonary hypertension by combined non-invasive assessment of pulmonary vascular resistance and right ventricular function. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Goda AE, Koyama M, Sowa Y, Elokely KM, Yoshida T, Kim BY, Sakai T. Molecular mechanisms of the antitumor activity of SB225002: a novel microtubule inhibitor. Biochem Pharmacol 2013; 85:1741-52. [PMID: 23611835 DOI: 10.1016/j.bcp.2013.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 04/11/2013] [Accepted: 04/15/2013] [Indexed: 10/26/2022]
Abstract
SB225002 (SB) is an IL-8 receptor B (IL-8RB) antagonist that has previously been shown to inhibit IL-8-based cancer cell invasion, and to possess in vivo anti-inflammatory and anti-nociceptive effects. The present study presented an evidence for the cell cycle-targeting activity of SB in a panel of p53-mutant human cancer cell lines of different origin, and investigated the underlying molecular mechanisms. A combination of cell cycle analysis, immunocytometry, immunoblotting, and RNA interference revealed that SB induced a BubR1-dependent mitotic arrest. Mechanistically, SB was shown to possess a microtubule destabilizing activity evidenced by hyperphosphorylation of Bcl2 and BclxL, suppression of microtubule polymerization and induction of a prometaphase arrest. Molecular docking studies suggested that SB has a good affinity toward vinblastine-binding site on β-tubulin subunit. Of note, SB265610 which is a close structural analog of SB225002 with a potent IL-8RB antagonistic activity did not exhibit a similar antimitotic activity. Importantly, in P-glycoprotein overexpressing NCI/Adr-Res cells the antitumor activity of SB was unaffected by multidrug resistance. Interestingly, the mechanisms of SB-induced cell death were cell-line dependent, where in invasive hepatocellular carcinoma HLE cells the significant contribution of BAK-dependent mitochondrial apoptosis was demonstrated. Conversely, SB activated p38 MAPK signaling in colorectal adenocarcinoma cells SW480, and pharmacologic inhibition of p38 MAPK activity revealed its key role in mediating SB-induced caspase-independent cell death. In summary, the present study introduced SB as a promising antitumor agent which has the potential to exert its activity through dual mechanisms involving microtubules targeting and interference with IL-8-drivin cancer progression.
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Affiliation(s)
- Ahmed E Goda
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
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Tomosugi M, Sowa Y, Yasuda S, Tanaka R, te Riele H, Ikawa H, Koyama M, Sakai T. Retinoblastoma gene-independent G1 phase arrest by flavone, phosphatidylinositol 3-kinase inhibitor, and histone deacetylase inhibitor. Cancer Sci 2012; 103:2139-43. [PMID: 22957647 DOI: 10.1111/cas.12012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 08/16/2012] [Accepted: 08/30/2012] [Indexed: 11/28/2022] Open
Abstract
In most human malignant tumors, retinoblastoma tumor-suppressor gene (RB) product is inactivated by phosphorylation. Therefore, cancer preventive agents or molecular-targeting agents can inhibit the tumor growth at G(1) phase through RB reactivation. However, little is known about the effectiveness of RB reactivating agents against malignancies with mutated RB. We report here that chemopreventive agent flavone, phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002, and histone deacetylase (HDAC) inhibitor trichostatin A (TSA) also induce G(1) phase arrest in malignant tumor cells with mutated RB. In human prostate cancer DU145 cells with mutated RB, flavone increased cyclin-dependent kinase (CDK) inhibitors p21 and p27, and reduced cdk4 and cdk6, resulting in decrement of phosphorylated RB family proteins p130 and p107. LY294002 also dephosphorylated p107 and p130 proteins, whereas TSA dephosphorylated p130, but not p107. Furthermore, flavone induced G(1) phase arrest in both mouse embryo fibroblast (MEF) wild-type and MEF RB(-/-) cells, but did not do so in RB, p107, and p130 triple-knockout MEF cells. These results suggested that p130 and p107 contributed to G(1) phase arrest by flavone in RB-mutated cells. However, flavone induced tumor suppressor microRNA miR-34a with reduction of E2F1 and E2F3, known to be downregulated by miR-34a, raising the possibility that miR-34a might partially contribute to G(1) arrest by flavone. These results raise the possibility that RB reactivating chemopreventive agents or molecular targeting agents might also be effective against a variety of malignant tumor cells with mutant RB.
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Affiliation(s)
- Mitsuhiro Tomosugi
- Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Vijayanand PS, Kato S, Koyama M, Satokawa S, Kojima T. Co-polymerization of 4-biphenyl methacrylate with methyl methacrylate: synthesis, characterization and determination of monomer reactivity ratios. Des Monomers Polym 2012. [DOI: 10.1163/156855507781505156] [Citation(s) in RCA: 4] [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: 11/19/2022] Open
Affiliation(s)
- P. S. Vijayanand
- a Department of Materials and Life Science, Seikei University, 3-1 Kichijoji-Kitamachi 3-Chome, Musashino-shi, Tokyo 180-8633, Japan
| | - S. Kato
- b Department of Materials and Life Science, Seikei University, 3-1 Kichijoji-Kitamachi 3-Chome, Musashino-shi, Tokyo 180-8633, Japan
| | - M. Koyama
- c Department of Materials and Life Science, Seikei University, 3-1 Kichijoji-Kitamachi 3-Chome, Musashino-shi, Tokyo 180-8633, Japan
| | - S. Satokawa
- d Department of Materials and Life Science, Seikei University, 3-1 Kichijoji-Kitamachi 3-Chome, Musashino-shi, Tokyo 180-8633, Japan
| | - T. Kojima
- e Department of Materials and Life Science, Seikei University, 3-1 Kichijoji-Kitamachi 3-Chome, Musashino-shi, Tokyo 180-8633, Japan
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Fujiwara J, Sowa Y, Horinaka M, Koyama M, Wakada M, Miki T, Sakai T. The anti-obesity drug orlistat promotes sensitivity to TRAIL by two different pathways in hormone-refractory prostate cancer cells. Int J Oncol 2012; 40:1483-91. [PMID: 22328338 DOI: 10.3892/ijo.2012.1353] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 12/14/2011] [Indexed: 11/06/2022] Open
Abstract
The administration of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is one of the expected cancer therapeutics. However, improvements are required in therapies against TRAIL-resistant tumor cells. We report, here, that the anti-obesity drug orlistat enhances the sensitivity to TRAIL in hormone-refractory prostate cancer (HRPC) cells through two different pathways. The combination of orlistat and TRAIL remarkably induced apoptosis in TRAIL-resistant HRPC, DU145 and PC3 cells. Orlistat induced the expression of death receptor (DR) 5, which is one of the TRAIL receptors, at both the mRNA and protein levels. The suppression of DR5 with siRNA reduced the apoptosis induced by the combination of orlistat and TRAIL, suggesting that the apoptosis was at least partially due to the upregulation of DR5. Although the upregulation by orlistat of CHOP at both mRNA and protein levels was observed in both cell lines, the activation of the DR5 promoter in DU145 cells was CHOP-dependent, but that in PC3 cells was CHOP-independent. Moreover, orlistat induced reactive oxygen species (ROS), and a ROS scavenger diminished the sensitivity to TRAIL through the suppression of CHOP and DR5 expression in both cell lines. These results suggest that there are two pathways of upregulation of DR5 by orlistat, which are the ROS-CHOP pathway and the ROS-direct pathway. In conclusion, orlistat promotes the sensitivity to TRAIL by ROS-mediated pathways in prostate cancer cells, especially in TRAIL-resistant cells. We believe that the combination of orlistat and TRAIL in HRPC is promising as a new chemotherapeutic strategy.
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Affiliation(s)
- Jun Fujiwara
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Markey K, Koyama M, Kuns R, Lineburg K, Wilson Y, Olver S, Don A, Varelias A, Robb R, Cheong M, Engwerda C, Steptoe R, Ramshaw H, Lopez A, Lew A, Villadangos J, Hill G, MacDonald K. Immune Insufficiency After Experimental Transplantation Is Due to Defective Antigen Presentation Within Dendritic Cell Subsets. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.066] [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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Ise F, Takasuka H, Hayashi S, Takahashi K, Koyama M, Aihara E, Takeuchi K. Stimulation of duodenal HCO₃⁻ secretion by hydrogen sulphide in rats: relation to prostaglandins, nitric oxide and sensory neurones. Acta Physiol (Oxf) 2011; 201:117-26. [PMID: 20528800 DOI: 10.1111/j.1748-1716.2010.02152.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
AIM We examined the effect of H₂S on duodenal HCO₃⁻ secretion in rats and investigated the mechanism involved in this response. METHODS Animals were fasted for 18 h and anaesthetized with urethane. A duodenal loop was perfused with saline, and HCO₃⁻ secretion was measured at pH 7.0 using a pH stat-method. The loop was perfused at a rate of 0.2 mL min⁻¹ with NaHS (H₂S donor: 0.1-1 mm) for 5 min or 10 mm HCl for 10 min. Indomethacin or l-NAME [nitric oxide (NO) synthase inhibitor) was given s.c. 30 min or 3 h, respectively, before NaHS or acidification, while glibenclamide (K(ATP) channel blocker) or propargylglycine (cystathionine-g-lyase inhibitor) was given i.p. 30 min before. RESULTS Mucosal perfusion with NaHS dose dependently increased the HCO₃⁻ secretion, and this effect was significantly attenuated by indomethacin and l-NAME as well as by sensory deafferentation, but not by glibenclamide. Mucosal prostaglandin E₂ (PGE₂) production and luminal release of NO were both increased by NaHS perfusion. Mucosal acidification stimulated HCO₃⁻ secretion concomitant with an increase in PGE₂ and NO production, and these responses were mitigated by propargylglycine. The duodenal damage induced by acid (100 mm HCl for 4 h) was aggravated by pre-treatment with propargylglycine. CONCLUSION These results suggest that H₂S increases HCO₃⁻ secretion in the rat duodenum, and that this action is partly mediated by PG and NO as well as by capsaicin-sensitive afferent neurones. It is assumed that endogenous H₂S is involved in the regulatory mechanism of acid-induced HCO₃⁻ secretion and mucosal protection in the duodenum.
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Affiliation(s)
- F Ise
- Department of Pharmacology and Experimental Therapeutics, Kyoto Pharmaceutical University, Japan
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78
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Honda O, Yanagawa M, Inoue A, Kikuyama A, Yoshida S, Sumikawa H, Tobino K, Koyama M, Tomiyama N. Image quality of multiplanar reconstruction of pulmonary CT scans using adaptive statistical iterative reconstruction. Br J Radiol 2010; 84:335-41. [PMID: 21081572 DOI: 10.1259/bjr/57998586] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE We investigated the image quality of multiplanar reconstruction (MPR) using adaptive statistical iterative reconstruction (ASIR). METHODS Inflated and fixed lungs were scanned with a garnet detector CT in high-resolution mode (HR mode) or non-high-resolution (HR) mode, and MPR images were then reconstructed. Observers compared 15 MPR images of ASIR (40%) and ASIR (80%) with those of ASIR (0%), and assessed image quality using a visual five-point scale (1, definitely inferior; 5, definitely superior), with particular emphasis on normal pulmonary structures, artefacts, noise and overall image quality. RESULTS The mean overall image quality scores in HR mode were 3.67 with ASIR (40%) and 4.97 with ASIR (80%). Those in non-HR mode were 3.27 with ASIR (40%) and 3.90 with ASIR (80%). The mean artefact scores in HR mode were 3.13 with ASIR (40%) and 3.63 with ASIR (80%), but those in non-HR mode were 2.87 with ASIR (40%) and 2.53 with ASIR (80%). The mean scores of the other parameters were greater than 3, whereas those in HR mode were higher than those in non-HR mode. There were significant differences between ASIR (40%) and ASIR (80%) in overall image quality (p<0.01). Contrast medium in the injection syringe was scanned to analyse image quality; ASIR did not suppress the severe artefacts of contrast medium. CONCLUSION In general, MPR image quality with ASIR (80%) was superior to that with ASIR (40%). However, there was an increased incidence of artefacts by ASIR when CT images were obtained in non-HR mode.
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Affiliation(s)
- O Honda
- Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan.
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Koyama M, Izutani Y, Goda AE, Matsui TA, Horinaka M, Tomosugi M, Fujiwara J, Nakamura Y, Wakada M, Yogosawa S, Sowa Y, Sakai T. Abstract 5415: Histone deacetylase inhibitors and 15-deoxy-Δ12,14-prostaglandin J2 synergistically induce apoptosis. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-5415] [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 histone deacetylase inhibitors (HDIs) valproic acid (VPA) and suberoylanilide hydroxamic acid (SAHA, vorinostat) are used clinically for the treatment of epilepsy and cutaneous T-cell lymphoma, respectively. HDIs have been shown to be more effectively utilized in combination with other agents despite the promising anti-tumor effect of HDIs alone. Therefore, additional mechanism-based therapeutic strategies for use of HDIs in combination with other agents should be investigated to overcome resistance to HDIs or to increase the efficacy of HDIs. The natural endogenous ligand of peroxisome proliferator-activated receptor γ (PPARγ) 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) is a member of cyclopentenone prostaglandins and known to be a potent anti-neoplastic agent. Thus, we examined whether VPA or SAHA in combination with 15d-PGJ2 could show synergistic anti-tumor activitiy in colon cancer DLD-1 cells. Cell viability was determined using a Cell Counting Kit-8 assay. Apoptosis and reactive oxygen species (ROS) generation were determined using flow cytometry analysis. Western blotting and real-time RT-PCR analysis were carried out to investigate the expressions of apoptosis-related molecules. Small interfering RNA or transient transfection with plasmids was used for gene silencing, gene overexpression or luciferase assays. Mice bearing DLD-1 xenograft were divided into 4 groups (n=5) and injected everyday (i.p.) with diluent, VPA (100 mg/kg), 15d-PGJ2 (5 mg/kg) or a combination for 25 days. Cotreatment with VPA or SAHA at clinically achievable concentrations and 15d-PGJ2 synergistically induced cell death and drastically caused caspase-dependent apoptosis in DLD-1 cells. The apoptosis induced by VPA/15d-PGJ2 cotreatment was due to alterations of apoptosis-related genes such as an antiapoptotic Bcl-2 family member Bcl-XL, X-chromosome-linked inhibitor of apoptosis (XIAP), C/EBP homologous protein (CHOP) and death receptor 5 (DR5) via ROS generation, subsequent endoplasmic reticulum stress and/or histone deacetylase inhibition. Moreover, VPA/15d-PGJ2 cotreatment induced ROS-dependent apoptosis in other malignant tumor cells and was more effective than a VPA or 15d-PGJ2 monotherapy in vivo. These results suggest that cotreatment with the clinically relevant HDIs and 15d-PGJ2 may warrant clinical investigation as a rational combination therapy against a broad spectrum of malignant tumors.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 5415.
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Affiliation(s)
| | | | | | | | | | | | - Jun Fujiwara
- 1Kyoto Prefectural Univ. of Medicine, Kyoto, Japan
| | | | - Miki Wakada
- 1Kyoto Prefectural Univ. of Medicine, Kyoto, Japan
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Koyama M, Izutani Y, Goda AE, Matsui TA, Horinaka M, Tomosugi M, Fujiwara J, Nakamura Y, Wakada M, Yogosawa S, Sowa Y, Sakai T. Histone deacetylase inhibitors and 15-deoxy-Delta12,14-prostaglandin J2 synergistically induce apoptosis. Clin Cancer Res 2010; 16:2320-32. [PMID: 20371690 DOI: 10.1158/1078-0432.ccr-09-2301] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE The clinically relevant histone deacetylase inhibitors (HDI) valproic acid (VPA) and suberoylanilide hydroxamic acid exert variable antitumor activities but increase therapeutic efficacy when combined with other agents. The natural endogenous ligand of peroxisome proliferator-activated receptor gamma 15-deoxy-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)) is a potent antineoplastic agent. Therefore, we investigated whether these HDIs in combination with 15d-PGJ(2) could show synergistic antitumor activity in colon cancer DLD-1 cells. EXPERIMENTAL DESIGN Cell viability was determined using a Cell Counting Kit-8 assay. Apoptosis and reactive oxygen species (ROS) generation were determined using flow cytometry analysis. Western blotting and real-time reverse transcription-PCR analysis were carried out to investigate the expression of apoptosis-related molecules. Mice bearing DLD-1 xenograft were divided into four groups (n = 5) and injected everyday (i.p.) with diluent, VPA (100 mg/kg), 15d-PGJ(2) (5 mg/kg), or a combination for 25 days. RESULTS HDI/15d-PGJ(2) cotreatments synergistically induced cell death through caspase-dependent apoptosis in DLD-1 cells. Moreover, HDIs/15d-PGJ(2) caused histone deacetylase inhibition, leading to subsequent ROS generation and endoplasmic reticulum stress to decrease the expression of antiapoptotic molecules Bcl-X(L) and XIAP and to increase that of proapoptotic molecules CAAT/enhancer binding protein homologous protein and death receptor 5. Additionally, VPA/15d-PGJ(2) cotreatment induced ROS-dependent apoptosis in other malignant tumor cells and was more effective than a VPA or 15d-PGJ(2) monotherapy in vivo. CONCLUSIONS Cotreatments with the clinically relevant HDIs and the endogenous peroxisome proliferator-activated receptor gamma ligand 15d-PGJ(2) are promising for the treatment of a broad spectrum of malignant tumors.
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Affiliation(s)
- Makoto Koyama
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Akiyoshi T, Oya M, Fujimoto Y, Kuroyanagi H, Ueno M, Yamaguchi T, Koyama M, Tanaka H, Matsueda K, Muto T. Comparison of preoperative whole-body positron emission tomography with MDCT in patients with primary colorectal cancer. Colorectal Dis 2009; 11:464-9. [PMID: 18637927 DOI: 10.1111/j.1463-1318.2008.01643.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Preoperative use of emission tomography with(18)F-fluorodeoxyglucose (FDG-PET) in patients with primary colorectal cancer remains controversial. This study evaluated the additional value of FDG-PET in comparison with routine multidetector row computed tomography (MDCT) in patients with primary colorectal cancer. METHOD Retrospective analysis was performed in 65 patients with colorectal cancer who underwent whole-body FDG-PET. Results of FDG-PET were compared with routine preoperative evaluation by MDCT regarding detection of primary tumour, lymph node involvement and distant metastases. All images were evaluated before surgery. RESULTS Tumour detection rate was 100% (63/63) for MDCT and 98% (62/63) for FDG-PET. Lymph node involvement was pathologically confirmed in 35 patients. MDCT and FDG-PET displayed sensitivities of 89% (31/35; 95% CI: 73-97%) and 43% (15/35; 95% CI: 26-61%) and specificities of 52% (11/21; 95% CI: 30-74%) and 95% (20/21; 95% CI: 76-100%), respectively. Liver metastases were present in 22 patients. MDCT and FDG-PET showed accuracies of 98% (64/65; 95% CI: 92-100%) and 97% (63/65; 95% CI: 89-100%), respectively. FDG-PET detected additional extrahepatic metastatic lesions and affected treatment plan compared with MDCT in 10 patients. CONCLUSION Preoperative FDG-PET is not superior to MDCT for detection of primary tumour, lymph node involvement or liver metastases, but may have potential clinical value in patients with advanced colorectal cancer by detecting extrahepatic distant metastases.
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Affiliation(s)
- T Akiyoshi
- Gastroenterological Division, Cancer Institute Hospital, Ariake, Koto-ku, Tokyo, Japan
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82
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Ueyama K, Koyama M, Otaki K, Terashima T, Nishimiya T. [Candida mediastinitis after double closure technique for repairing ventricular septal perforation]. Kyobu Geka 2009; 62:215-218. [PMID: 19280953] [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: 05/27/2023]
Abstract
A 69-year-old man was referred to our hospital due to acute myocardial infarction. Systolic heart murmur was first noted on the 23rd day after the onset, but no cardiac shunt flow was detected by echocardiography at that time. Six days later, cardiac function deteriorated rapidly, followed by oliguria and shock. Re-do echocardiography showed ventricular septal perforation. Emergency operation was performed, and septal perforation was seen on the anterior portion of the septum. In addition to infarct-exclusion-technique (Komeda-David method) with the equine pericardial patch, direct closure of the septal defect was performed (double closure technique). Fibrin glue was applied between the ventricular septum and the patch. After surgery, he suffered from Candida mediastinitis and received omentum plombage. Furthermore tracheotomy was performed for pneumonia. He recovered gradually, and was discharged about 3 months after surgery. Echocardiography showed no residual shunt.
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Affiliation(s)
- K Ueyama
- Department of Cardiovascular Surgery, Asahikawa Red-cross Hospital, Asahikawa, Japan
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Tamura T, Takagi S, Horikoshi K, Yusa T, Koyama M, Tojo H, Ohta Y. 314 POSTER Combined antitumor efficacies of TAK-285, a novel ErbB1/ErbB2 dual kinase inhibitor, with other anticancer drugs. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)72248-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Kamikubo Y, Takahashi D, Koyama M, Itoh M, Takahira M. [Treatment of massive endobronchial hemorrhage after cardiopulmonary bypass by selective coil embolization of the bronchial artery]. Kyobu Geka 2008; 61:359-362. [PMID: 18464478] [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: 05/26/2023]
Abstract
A 68-year-old woman underwent aortic valve replacement to treat her aortic regurgitation. The operation was performed successfully. Just before coming off cardiopulmonary bypass, massive hemorrhage occurred through the endotracheal tube. Fiberoptic bronchoscopy could not find the bleeding site and 1,350 ml of blood had been lost. Bronchial angiography under percutaneous cardiopulmonary bypass revealed the right middle branch to be the bleeding site. The endotrachial bleeding was treated successfully by selective coil embolization of the bronchial artery. No further bronchial bleeding occurred. Although we found the bleeding site, we could not identify the cause of hemorrhage.
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Affiliation(s)
- Yasuhiro Kamikubo
- Department of Cardiovascular Surgery, Kushiro City General Hospital, Kushiro, Japan
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85
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Koizumi M, Koyama M, Tada K, Nishimura S, Miyagi Y, Makita M, Yoshimoto M, Iwase T, Horii R, Akiyama F, Saga T. The feasibility of sentinel node biopsy in the previously treated breast. Eur J Surg Oncol 2008; 34:365-8. [PMID: 17532172 DOI: 10.1016/j.ejso.2007.04.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [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: 01/29/2007] [Accepted: 04/18/2007] [Indexed: 11/16/2022] Open
Abstract
PURPOSE Sentinel lymph node biopsy (SNB) has been a standard technique in early breast cancer. However, it is not clear that the SNB procedure can be applied to second breast cancer or recurrence occurring in the previously treated breast. The purpose of this study was to clarify the feasibility of the SNB procedure in breast cancer occurring in the previously treated breast, and to investigate the factors related to altered lymphatic flow. PATIENTS AND METHODS Between April 2004 and December 2006, 1490 patients underwent the breast SNB procedure. Among them, 31 patients had a history of previous treatments in the same breast. Recent excision biopsy cases were not included in this group. All patients had previous breast-conserving surgery in the same breast. Sixteen patients had axillary dissection, 3 had SNB, and 12 had no axillary treatment. Ten patients had received radiation therapy to the breast and axilla. Visualization of axillary nodes, internal mammary nodes and contralateral axillary nodes was evaluated and compared with pathological results. RESULTS Axillary nodes were visualized in 23 patients, internal mammary nodes in 7 patients, and contralateral axillary nodes in 7 patients. The patients with previous axillary dissection exhibited altered lymph node distribution, but did not show involvement of contralateral axillary nodes. Visualization of contralateral axillary nodes occurred in 7 of the 10 patients with previous irradiation to breast irrespective of axillary dissection. Twenty-eight patients underwent SNB, 4 of whom showed cancer-positive nodes. Three patients were cancer-positive in non-ipsilateral axillary nodes (one patient showed positive opposite axillary node and two patients showed positive internal mammary nodes). CONCLUSION Previous axillary dissection or irradiation to the breast greatly influences lymphatic flow. Irradiation to the breast may be a strong factor for the visualization of contralateral axillary nodes. Despite the frequent alteration of lymphatic flow, SNB seems to be feasible in secondary or recurrent breast cancer patients.
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Affiliation(s)
- M Koizumi
- Diagnostic Imaging Group, Institute for Molecular Imaging, National Institutes of Radiological Sciences, Chiba, Japan.
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86
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Matsuzaki Y, Koyama M, Hitomi T, Yokota T, Kawanaka M, Nishikawa A, Germain D, Sakai T. Arctiin induces cell growth inhibition through the down-regulation of cyclin D1 expression. Oncol Rep 2008; 19:721-727. [PMID: 18288407] [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: 05/25/2023] Open
Abstract
Arctiin is a major lignan constituent of Arctium lappa and has anti-cancer properties in animal models. It was recently reported that arctiin induces growth inhibition in human prostate cancer PC-3 cells. However, the growth inhibitory mechanism of arctiin remains unknown. Herein we report that arctiin induces growth inhibition and dephosphorylates the tumor-suppressor retinoblastoma protein in human immortalized keratinocyte HaCaT cells. We also show that the growth inhibition caused by arctiin is associated with the down-regulation of cyclin D1 protein expression. Furthermore, the arctiin-induced suppression of cyclin D1 protein expression occurs in various types of human tumor cells, including osteosarcoma, lung, colorectal, cervical and breast cancer, melanoma, transformed renal cells and prostate cancer. Depletion of the cyclin D1 protein using small interfering RNA-rendered human breast cancer MCF-7 cells insensitive to the growth inhibitory effects of arctiin, implicates cyclin D1 as an important target of arctiin. Taken together, these results suggest that arctiin down-regulates cyclin D1 protein expression and that this at least partially contributes to the anti-proliferative effect of arctiin.
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Affiliation(s)
- Youichirou Matsuzaki
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
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87
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Matsuzaki Y, Koyama M, Hitomi T, Yokota T, Kawanaka M, Nishikawa A, Germain D, Sakai T. Arctiin induces cell growth inhibition through the down-regulation of cyclin D1 expression. Oncol Rep 2008. [DOI: 10.3892/or.19.3.721] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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88
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Ueyama K, Otaki K, Koyama M, Kamiyama H. Urgent simultaneous revascularization of the carotid artery and ascending aortic replacement for type A acute aortic dissection with cerebral malperfusion. Gen Thorac Cardiovasc Surg 2007; 55:284-6. [PMID: 17679256 DOI: 10.1007/s11748-007-0126-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We report a case of successful urgent surgical therapy for a Stanford type A acute aortic dissection with cerebral malperfusion. A woman with a sudden severe chest pain consulted the emergency department. Computed tomography results showed a Stanford type A acute aortic dissection. She had repeating left paralysis, so a cerebrovascular study was performed. It showed that the collateral left carotid and vertebral arteries perfused only the right cerebral hemisphere. Hence, it was thought that the left paralysis was caused by cerebral malperfusion due to the dissection. Simple aortic replacement endangered the right cerebral hemisphere, so we performed urgent revascularization of the right carotid artery, followed by an ascending aortic replacement procedure.
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Affiliation(s)
- Keishi Ueyama
- Department of Cardiovascular Surgery, Asahikawa Red Cross Hospital, Akebono 1-1-1-1, Asahikawa 070-8530, Japan.
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89
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Yamaguchi T, Yoshida T, Kurachi R, Kakegawa J, Hori Y, Nanayama T, Hayakawa K, Abe H, Takagi K, Matsuzaki Y, Koyama M, Yogosawa S, Sowa Y, Yamori T, Tajima N, Sakai T. Identification of JTP-70902, a p15(INK4b)-inductive compound, as a novel MEK1/2 inhibitor. Cancer Sci 2007; 98:1809-16. [PMID: 17784872 DOI: 10.1111/j.1349-7006.2007.00604.x] [Citation(s) in RCA: 40] [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] [Indexed: 12/21/2022] Open
Abstract
The INK4 family members p16(INK4a) and p15(INK4b) negatively regulate cell cycle progression by inhibition of cyclin-dependent kinase (CDK) 4/6. Loss of p16(INK4a) functional activity is frequently observed in tumor cells, and is thought to be one of the primary causes of carcinogenesis. In contrast, despite the biochemical similarity to p16(INK4a), the frequency of defects in p15(INK4b) was found to be lower than in p16(INK4a), suggesting that p15(INK4b)-inductive agents may be useful for tumor suppression. Here we report the discovery of a novel pyrido-pyrimidine derivative, JTP-70902, which exhibits p15(INK4b)-inducing activity in p16(INK4a)-inactivated human colon cancer HT-29 cells. JTP-70902 also induced another CDK-inhibitor, p27(KIP1), and downregulated the expression of c-Myc and cyclin D1, resulting in G(1) cell cycle arrest. MEK1/2 was identified by compound-immobilized affinity chromatography as the molecular target of JTP-70902, and this was further confirmed by the inhibitory activity of JTP-70902 against MEK1/2 in kinase assays. JTP-70902 suppressed the growth of most colorectal and some other cancer cell lines in vitro, and showed antitumor activity in an HT-29 xenograft model. However, JTP-70902 did not inhibit the growth of COLO320 DM cells; in these, constitutive extracellular signal-regulated kinase phosphorylation was not detected, and neither p15(INK4b) nor p27(KIP1) induction was observed. Moreover, p15(INK4b)-deficient mouse embryonic fibroblasts were found to be more resistant to the growth-inhibitory effect of JTP-70902 than wild-type mouse embryonic fibroblasts. These findings suggest that JTP-70902 restores CDK inhibitor-mediated cell cycle control by inhibiting MEK1/2 and exerts a potent antitumor effect.
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Affiliation(s)
- Takayuki Yamaguchi
- Central Pharmaceutical Research Institute, Japan Tobacco, 1-1 Murasaki-cho, Takatsuki, Osaka, Japan
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Yokota T, Matsuzaki Y, Koyama M, Hitomi T, Kawanaka M, Enoki-Konishi M, Okuyama Y, Takayasu J, Nishino H, Nishikawa A, Osawa T, Sakai T. Sesamin, a lignan of sesame, down-regulates cyclin D1 protein expression in human tumor cells. Cancer Sci 2007; 98:1447-53. [PMID: 17640297 DOI: 10.1111/j.1349-7006.2007.00560.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Sesamin is a major lignan constituent of sesame and possesses multiple functions such as antihypertensive, cholesterol-lowering, lipid-lowering and anticancer activities. Several groups have previously reported that sesamin induces growth inhibition in human cancer cells. However, the nature of this growth inhibitory mechanism remains unknown. The authors here report that sesamin induces growth arrest at the G1 phase in cell cycle progression in the human breast cancer cell line MCF-7. Furthermore, sesamin dephosphorylates tumor-suppressor retinoblastoma protein (RB). It is also shown that inhibition of MCF-7 cell proliferation by sesamin is correlated with down-regulated cyclin D1 protein expression, a proto-oncogene that is overexpressed in many human cancer cells. It was found that sesamin-induced down-regulation of cyclin D1 was inhibited by proteasome inhibitors, suggesting that sesamin suppresses cyclin D1 protein expression by promoting proteasome degradation of cyclin D1 protein. Sesamin down-regulates cyclin D1 protein expression in various kinds of human tumor cells, including lung cancer, transformed renal cells, immortalized keratinocyte, melanoma and osteosarcoma. Furthermore, depletion of cyclin D1 protein using small interfering RNA rendered MCF-7 cells insensitive to the growth inhibitory effects of sesamin, implicating that cyclin D1 is at least partially related to the antiproliferative effects of sesamin. Taken together, these results suggest that the ability of sesamin to down-regulate cyclin D1 protein expression through the activation of proteasome degradation could be one of the mechanisms of the antiproliferative activity of this agent.
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Affiliation(s)
- Tomoya Yokota
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Koyama M, Matsuzaki Y, Yogosawa S, Hitomi T, Kawanaka M, Sakai T. ZD1839 induces p15INK4b and causes G1 arrest by inhibiting the mitogen-activated protein kinase/extracellular signal–regulated kinase pathway. Mol Cancer Ther 2007; 6:1579-87. [PMID: 17513607 DOI: 10.1158/1535-7163.mct-06-0814] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Inactivation of the retinoblastoma protein pathway is the most common abnormality in malignant tumors. We therefore tried to detect agents that induce the cyclin-dependent kinase inhibitor p15(INK4b) and found that ZD1839 (gefitinib, Iressa) could up-regulate p15(INK4b) expression. ZD1839 has been shown to inhibit cell cycle progression through inhibition of signaling pathways such as phosphatidylinositol 3'-kinase-Akt and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) cascades. However, the mechanism responsible for the differential sensitivity of the signaling pathways to ZD1839 remains unclear. We here showed that ZD1839 up-regulated p15(INK4b), resulting in retinoblastoma hypophosphorylation and G(1) arrest in human immortalized keratinocyte HaCaT cells. p15(INK4b) induction was caused by MAPK/ERK kinase inhibitor (PD98059), but not by Akt inhibitor (SH-6, Akt-III). Moreover, mouse embryo fibroblasts lacking p15(INK4b) were resistant to the growth inhibitory effects of ZD1839 compared with wild-type mouse embryo fibroblasts. Additionally, the status of ERK phosphorylation was related to the antiproliferative activity of ZD1839 in human colon cancer HT-29 and Colo320DM cell lines. Our results suggest that induction of p15(INK4b) by inhibition of the MAPK/ERK pathway is associated with the antiproliferative effects of ZD1839.
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Affiliation(s)
- Makoto Koyama
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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Hitomi T, Matsuzaki Y, Yasuda S, Kawanaka M, Yogosawa S, Koyama M, Tantin D, Sakai T. Oct-1 is involved in the transcriptional repression of the p15(INK4b) gene. FEBS Lett 2007; 581:1087-92. [PMID: 17316622 DOI: 10.1016/j.febslet.2007.01.092] [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] [Subscribe] [Scholar Register] [Received: 10/09/2006] [Revised: 01/22/2007] [Accepted: 01/31/2007] [Indexed: 01/02/2023]
Abstract
p15(INK4b) functions as a tumor suppressor and implicated in cellular senescence. Here, we show that the Oct-1 binding site in the human p15(INK4b) gene promoter functions as a silencer. Oct-1 specifically interacts with this binding site in vitro and in vivo and SMRT and HDAC1 are present in the p15(INK4b) proximal promoter region. Moreover, mouse embryo fibroblasts (MEFs) lacking Oct-1 have shown significantly increased levels of p15(INK4b) protein compared to their normal counterparts. Treatment with a histone deacetylase (HDAC) inhibitor has activated the expression of p15(INK4b) in wild-type MEFs but has no effect in MEFs lacking Oct-1, suggesting that Oct-1 represses p15(INK4b) gene expression in an HDAC-dependent manner. Finally, we show that the expression of Oct-1 protein significantly decreases, whereas p15(INK4b) protein significantly increases with the cellular aging process. Taken together, these results suggest that Oct-1 is an important transcriptional repressor for p15(INK4b) gene and the transcriptional repression of the p15(INK4b) gene by Oct-1 may be one of the regulatory mechanisms of cellular senescence.
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Affiliation(s)
- Toshiaki Hitomi
- Department of Molecular-Targeting Cancer Prevention, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
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93
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Hashimoto D, Asakura S, Matsuoka KI, Sakoda Y, Koyama M, Aoyama K, Tanimoto M, Teshima T. 298: Alloantigens expression on host non-hematopoietic cells leads to donor T cell exhaustion and reduces GVL effects. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.303] [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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94
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Koyama M, Hashimoto D, Kamezaki K, Numata A, Sakoda Y, Aoyama K, Takenaka K, Miyamoto T, Harada N, Nagafuji K, Akashi K, Tanimoto M, Harada M, Teshima T. 351: Early recovery of host T cells predicts primary graft rejection following non-myeloablative conditioning allogeneic hematopoietic stem cell transplantation. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.356] [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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Koizumi M, Koyama M, Yamashita T, Tada KI, Nishimura SI, Takahashi K, Makita M, Iwase T, Yoshimoto M, Kasumi F. Experience with intradermal injection and intradermal-plus-deep injection in the radioguided sentinel node biopsy of early breast cancer patients. Eur J Surg Oncol 2006; 32:738-42. [PMID: 16806793 DOI: 10.1016/j.ejso.2006.04.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2006] [Accepted: 04/20/2006] [Indexed: 11/25/2022] Open
Abstract
AIMS Methods of administering (99m)Tc-phytate during sentinel node biopsy of early breast cancer patients were compared to improve the sensitivity of the technique. METHODS Two injection methods, intradermal vs. intradermal-plus-deep injection, were compared in 648 early breast cancer patients. Intradermal injection was done in 323 consecutive patients (325 breasts), and intradermal-plus-deep injection was done in 325 consecutive patients (329 breasts). The following items were compared: (1) The number of axillary nodes detected scintigraphically and removed surgically, and the breast number of micrometastasis to axillary nodes; (2) The number of internal mammary nodes detected scintigraphically and removed surgically; and (3) The sensitivity of axillary SNB. RESULTS The number of axillary nodes scintigraphically detected was 1.63+/-0.80 (mean+/-SD) in patients given intradermal injection, and was 1.82+/-0.94 in patients given intradermal-plus-deep injection. The number of axillary nodes surgically removed was 1.78+/-0.93 in patients given intradermal injection, and was 1.95+/-0.99 in patients given intradermal-plus-deep injection. The visualization of internal mammary nodes was superior with intradermal-plus-deep injection (5/325 for intradermal, and 51/329 for intradermal-plus-deep). The putative sensitivity was 71/72 (98.6%) for the intradermal-plus-deep method and 56/62 (90.3%) for the intradermal method. The frequency of detection of micrometastasis was 24 in 71 true positive (38.8%) for the intradermal-plus-deep method and 13 in 56 true positive (23.2%) for the intradermal method. CONCLUSIONS The SNB procedure with the intradermal-plus-deep injection method detected more axillary and internal mammary nodes, more (not statistically significant) micrometastasis and improved the putative sensitivity more than the SNB procedure with the intradermal injection method.
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Affiliation(s)
- M Koizumi
- Department of Nuclear Medicine, Cancer Institute Hospital, Ariake 3-10-6, Koto-ku, Tokyo 135-8550, Japan.
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96
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Broclawik E, Shaikh AR, Pei Q, Chiba K, Sasaki Y, Tsuboi H, Koyama M, Kubo M, Akutsu K, Hirota M, Kitada M, Hirata H, Miyamoto A. Model first principles molecular dynamics study on the fate of vibrationally excited states in liquid water. Mol Phys 2006. [DOI: 10.1080/00268970600653019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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97
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Morota S, Koizumi M, Koyama M, Sugihara T, Tada KI, Miyagi Y, Nishimura SI, Makita M, Iwase T, Yoshimoto M, Kasumi F. Radioactivity thresholds for sentinel node biopsy in breast cancer. Eur J Surg Oncol 2006; 32:1101-4. [PMID: 16626922 DOI: 10.1016/j.ejso.2006.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2006] [Accepted: 03/06/2006] [Indexed: 11/21/2022] Open
Abstract
AIMS The aim of the present study is to clarify the level of radioactive lymph node should be biopsied after the most radioactive SN is removed. METHODS SNB using radionuclide was performed in our hospital for 1179 primary breast cancers between April 2000 and October 2005; most (1177/1179) were performed successfully. Our criterion for harvesting SNs is to remove tissue until no radioactive site is present. The level of radioactivity and the order of removal of each lymph node were compared with pathologic results. RESULTS More than 2 (overall average 1.9) radioactive SNs were biopsied in 686 of 1177 breasts. Cancer positive results were recorded for 142 breasts with multiple SNs. In 142 breasts, 64 showed metastasis to the most radioactive node only, 39 showed metastasis other than the most radioactive node only, and 39 showed the most radioactive node and other radioactive nodes. Moreover, if several other criteria were applied, false-positive cases were increased significantly. CONCLUSIONS It is necessary to harvest radioactive lymph nodes other than the most radioactive. Moreover, efforts to remove every radioactive lymph node will minimize false-negative results.
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Affiliation(s)
- S Morota
- Department of Nuclear Medicine, Cancer Institute Hospital, Ariake 3-10-6, Koto-ku, Tokyo 135-8550, Japan
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98
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Kamei K, Maeda N, Nomura K, Shibata M, Katsuragi-Ogino R, Koyama M, Nakajima M, Inoue T, Ohno T, Tatsuoka T. Synthesis, SAR studies, and evaluation of 1,4-benzoxazepine derivatives as selective 5-HT1A receptor agonists with neuroprotective effect: Discovery of Piclozotan. Bioorg Med Chem 2006; 14:1978-92. [PMID: 16290165 DOI: 10.1016/j.bmc.2005.10.046] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Revised: 10/25/2005] [Accepted: 10/25/2005] [Indexed: 11/21/2022]
Abstract
A new series of 1,4-benzoxazepine derivatives was designed, synthesized, and evaluated for binding to 5-HT1A receptor and cerebral anti-ischemic effect. A lot of compounds exhibited nanomolar affinity for 5-HT1A receptor with good selectivity over both dopamine D2 and alpha1-adrenergic receptors. Among these compounds, 3-chloro-4-[4-[4-(2-pyridinyl)-1,2,3,6-tetrahydropyridin-1-yl]butyl]-1, 4-benzoxazepin-5(4H)-one (50: SUN N4057 (Piclozotan) as 2HCl salt) showed remarkable neuroprotective activity in a transient middle cerebral artery occlusion (t-MCAO) model.
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Affiliation(s)
- Katsuhide Kamei
- Daiichi Asubio Pharma Co., Ltd, 1-1-1, Wakayamadai, Mishima-gun, Osaka 618-8513, Japan.
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99
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Inoue M, Okamura T, Yasui M, Sawada A, Sakata N, Koyama M, Sakata A, Takeshita Y, Kouroki M, Yagi K, Kawa K. Increased intensity of acute graft-versus-host disease after reduced-intensity bone marrow transplantation compared to conventional transplantation from an HLA-matched sibling in children. Bone Marrow Transplant 2006; 37:601-5. [PMID: 16444280 DOI: 10.1038/sj.bmt.1705285] [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: 11/09/2022]
Abstract
Eight children underwent reduced-intensity stem cell transplantation (RIST) from an HLA-matched sibling. They received a fludarabine-melphalan based preparative regimen. Stem cell source was bone marrow, and GVHD prophylaxis consisted of cyclosporine A alone. Acute GVHD grade II-IV and grade III-IV were observed in four (50%) and three (37.5%), respectively, out of these eight patients. This incidence was significantly higher than that after conventional bone marrow transplantation, without severe tissue damage, in the same setting of stem cell source and GVHD prophylaxis. Although the number of patients is small, our results suggest that incidence of acute GVHD after RIST for children is significant. It should be remembered that RIST for children does not seem to be an easy transplant procedure from the viewpoint of acute GVHD, although RIST is less toxic.
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Affiliation(s)
- M Inoue
- Department of Pediatrics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan.
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100
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Elanany M, Vercauteren D, Koyama M, Kubo M, Selvam P, Broclawik E, Miyamoto A. H-MOR: Density functional investigation for the relative strength of Brønsted acid sites and dynamics simulation of NH3 protonation–deprotonation. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.molcata.2005.08.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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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