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Kawazoe T, Toyota S, Nakanishi R, Tajiri H, Zaitsu Y, Nakashima Y, Ota M, Oki E, Yoshizumi T. Impact of surgical proximal and distal margins on the recurrence of resectable colon cancer: a single-center observational cohort study. Surg Today 2024:10.1007/s00595-024-02836-8. [PMID: 38613586 DOI: 10.1007/s00595-024-02836-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/07/2024] [Indexed: 04/15/2024]
Abstract
PURPOSE Few studies have investigated the impact of the surgical proximal and distal margins on colon cancer recurrence. We conducted this study to investigate the effect of resection margins on the prognosis of resectable colon cancer. METHODS We analyzed data on 1458 patients who underwent colorectal resection in our institute between January, 2004 and March, 2020, including 579 patients with resectable colon cancer. The association between the resection margin and recurrence for each oncological status was assessed and the value of the resection length that influenced recurrence was analyzed. RESULTS Patients who had pT4 colon cancer with margins of more than 7 cm had a trend of fewer recurrences and longer relapse-free survival (RFS) than those with colon cancer of other stages (P = 0.033; hazard ratio [HR], 0.42; 95% confidence interval [CI], 0.20-0.89). Multivariate analysis identified a margin of < 7 cm as an independent risk factor for RFS in patients with pT4 colon cancer (P = 0.023; HR, 2.65; 95% CI 1.013-6.17). No correlation was found between resection margins and recurrence, depending on the extent of lymph node metastasis and tumor location. CONCLUSION A resection margin of at least 7 cm should be maintained for patients with pT4 colon cancer.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan.
| | - Satoshi Toyota
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Ryota Nakanishi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Hirotada Tajiri
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Yoko Zaitsu
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Mitsuhiko Ota
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-Ku, Fukuoka-City, Fukuoka, 812-8582, Japan
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Ebata Y, Nakanishi R, Tanaka Y, Kawazoe T, Tajiri H, Zaitsu Y, Nakashima Y, Ota M, Oki E, Yoshizumi T. Neoadjuvant Chemotherapy in Patients With T4b or Obstructive Colon Cancer: A Single Center Retrospective Cohort Study. Anticancer Res 2024; 44:1281-1287. [PMID: 38423645 DOI: 10.21873/anticanres.16923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND/AIM The efficacy of neoadjuvant chemotherapy (NAC) for colon cancer remains unestablished. This study aimed to investigate the outcomes of NAC in patients with locally advanced T4b or obstructive T4a colon cancers (LACC). PATIENTS AND METHODS Data of patients with LACC who underwent colon surgery between 2010 and 2022 after NAC at our institution were retrospectively reviewed. Patient characteristics, surgical outcomes, tumor features, and prognosis were analyzed. RESULTS Among 800 patients with LACC who underwent radical resection, 11 received NAC because of cT4b or cT4a with mechanical obstruction. NAC, administered as a doublet regimen, had a median duration of three months, without grade ≥3 adverse events. R0 resection was achieved in all patients and downstaging was observed in eight patients. One patient developed a postoperative abdominal abscess, and adjuvant chemotherapy was administered to eight patients. Four patients experienced recurrence: liver metastasis in two, and local recurrence in two. Among these, three patients underwent resection of recurrent tumors. Median follow-up was 30 months. CONCLUSION NAC is feasible for T4b or obstructive T4a colon cancer and may be a treatment option for LACC. Further large-scale studies are required to confirm the efficacy of NAC in these patients.
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Affiliation(s)
- Yuho Ebata
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ryota Nakanishi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasushi Tanaka
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hirotada Tajiri
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoko Zaitsu
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mitsuhiko Ota
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Kawazoe T, Ohgaki K, Fujinaka Y, Wang H, Morita K, Nakanishi R, Ikeda Y. Preoperative Hemoglobin Level as Predictor of the Development of High-output Stoma in Rectal Cancer Surgery. Cancer Diagn Progn 2023; 3:667-672. [PMID: 37927812 PMCID: PMC10619571 DOI: 10.21873/cdp.10270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 09/11/2023] [Indexed: 11/07/2023]
Abstract
Background/Aim High-output stomas (HOSs) are a complication that can cause dehydration or renal dysfunction and affect the quality of life of patients, causing water, sodium, and magnesium depletion with malnutrition. Preoperative factors that are useful for predicting HOS are not well defined. Patients and Methods A total of nine patients developed HOS among 31 patients who underwent rectal cancer surgery with ileostomies during 2014-2021. Clinicopathological and surgical parameters were also analyzed. HOS was defined as maximum output of ≥2,000 ml/day. Results The clinicopathological features did not differ between the HOS and non-HOS groups. Lower Hemoglobin (Hb) levels (<12 mg/dl) and longer operation times (≥300 min) were shown to be risk factors in the development of HOS. Conclusion Low Hb levels on preoperative blood tests were predictors of HOS development in patients who underwent rectal cancer surgery and ileostomies simultaneously in our data set. Further studies are required to improve the robustness of these findings.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
- Department of Surgery and Science, Kyushu University, Fukuoka, Japan
| | - Kippei Ohgaki
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoshihiko Fujinaka
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Huanlin Wang
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Kazutoyo Morita
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Ryota Nakanishi
- Department of Surgery and Science, Kyushu University, Fukuoka, Japan
| | - Yoichi Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
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Kose E, Nakagawa S, Niki K, Hashizume J, Kawazoe T, Suzuki N, Uchida M, Takase H. Pharmacist Interventions for Adverse Drug Reactions in Palliative Care: A Multicentre Pilot Study. Pharmazie 2023; 78:141-149. [PMID: 37592417 DOI: 10.1691/ph.2023.3554] [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: 08/19/2023]
Abstract
This study aimed to investigate adverse reactions to medications administered during palliative care and compare the responses of Board-Certified Pharmacists in Palliative Pharmacy (BCPPP) and non-BCPPP professionals. Methods: This multicentre prospective survey included hospital and community pharmacists who are members of the Japanese Society for Pharmaceutical Palliative Care and Sciences. Study participants included patients who experienced new drug reactions during the study period and responded to the requested survey items. The follow-up period for each eligible patient began on the day the pharmacists initiated the intervention and ended at discharge, death, or after one month of intervention. The primary endpoint was the impact of pharmacist intervention on adverse drug reactions. The pharmacists included in the study evaluated the severity of adverse drug reactions to assess the effect of their intervention using an integrated palliative care outcome scale before and after the intervention. Key findings: During the survey period, 79 adverse drug reaction intervention reports from 69 patients were obtained from 54 pharmacists (28 certified and 26 non-certified). The response rate was 1.62% (54/3,343). The management of palliative pharmacotherapy side effects by BCPPP and non-BCPPP significantly improved the patients' activities of daily living (P < 0.001). The BCPPP group intervened for significantly more patients with adverse drug reactions and overall adverse drug reactions than the non-BCPPP group (P < 0.023 and P < 0.013, respectively). Conclusion: BCPPP interventions can improve symptom management.
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Affiliation(s)
- E Kose
- Department of Pharmacy; These authors contributed equally to this work
| | - S Nakagawa
- Department of Clinical Pharmacy; Nippon Medical School Tamanagayama Hospital; Research Promotion Committee; These authors contributed equally to this work; Corresponding author: Sari Nakagawa, Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Kobe Gakuin University, 1-1-3 Minatojima, Chuo-ku, Kobe-shi, Hyogo 650-8586, Japan,
| | - K Niki
- Faculty of Pharmaceutical Sciences, Kobe Gakuin University; Department of Clinical Pharmacy Research and Education; Nippon Medical School Tamanagayama Hospital; Research Promotion Committee
| | - J Hashizume
- Graduate School of Pharmaceutical Sciences, Osaka University; Department of Hospital Pharmacy
| | - T Kawazoe
- Nagasaki University Hospital; Department of Clinical Pharmacy; Nippon Medical School Tamanagayama Hospital; Research Promotion Committee
| | - N Suzuki
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University; Department of Pharmacy
| | - M Uchida
- National Hospital Organization Sendai Medical Center; Department of Education and Research Center for Pharmacy Practice; Nippon Medical School Tamanagayama Hospital; Research Promotion Committee
| | - H Takase
- Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts; Department of Pharmacy; Nippon Medical School Tamanagayama Hospital; Research Promotion Committee
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Ito S, Ohgaki K, Kawazoe T, Wang H, Okamoto Y, Adachi E, Ikeda Y. Successful Treatment of Refractory Enterocutaneous Fistula After Esophagectomy Using Soft Coagulation by an Endoscopic and Percutaneous Approach: A Case Report. Anticancer Res 2023; 43:2873-2877. [PMID: 37247936 DOI: 10.21873/anticanres.16457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 05/31/2023]
Abstract
BACKGROUND/AIM Anastomotic leakage (AL) is a serious complication after esophagectomy, and the refractory fistula (RF) following AL is therapeutically challenging with no optimal management strategies known. Thus, new therapeutic options are required for treating RF. CASE REPORT A 67-year-old man who underwent endoscopic mucosal dissection was subjected to subtotal esophagectomy and reconstruction with a gastric tube through the retrosternal route with cervical anastomosis as additional therapy. On postoperative day 5, leakage from the esophagogastric anastomosis was detected. A refractory enterocutaneous fistula (4 cm in length) developed between the esophagogastric anastomosis (the fistula opening was 1 cm approximately) and cervical skin. The RF did not heal despite the drainage of saliva, enteral nutrition, oral administration of biperiden hydrochloride for orofacial dyskinesia to rest the esophagogastric anastomosis, coagulation factor XIII transvenously, and fibrin glue injection from the opening of the fistula, probably due to difficulty in maintaining the rest of the esophagogastric anastomosis caused by orofacial dyskinesia. On postoperative day 76, soft coagulation to the fistula opening at the esophagogastric anastomosis by an endoscopic approach and to the fistula via the fistula opening at the cervical site by a percutaneous approach was performed. The post-treatment course was uneventful. The RF completely closed immediately after soft coagulation. CONCLUSION Soft coagulation using endoscopic and percutaneous approaches to RF is a minimally invasive procedure and may be a useful option if the fistula opening of the anastomotic site is small and accessible endoscopically, and there are no vital organs around the fistula.
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Affiliation(s)
- Shuhei Ito
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan;
| | - Kippei Ohgaki
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Tetsuro Kawazoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Huanlin Wang
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yasuharu Okamoto
- Department of Gastroenterology, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Eisuke Adachi
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoichi Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
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Kawazoe T, Ishida T, Jobu K, Kawada K, Yoshioka S, Miyamura M. Analysis of Urinary Retention Caused by Selective β 3-adrenoceptor Agonists Using the Japanese Adverse Drug Event Report Database (JADER). Pharmazie 2023; 78:56-62. [PMID: 37189265 DOI: 10.1691/ph.2023.3509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Overactive bladder (OAB) is a frequent chronic disorder which impairs quality of life by frequent, uncontrollable urination. Newly developed selectiveβ 3-adrenoceptor agonists (sβ 3-agonists) have the same efficacy in treating OAB but significantly fewer side effects than the traditionally used anti-muscarinics. However, safety data on these compounds are scarce. In this study, we analysed the occurrence of adverse effects in patients taking sβ 3-agonists and their characteristics using the JADER database. The most frequently reported adverse effect associated with the use of sβ 3-agonists was urinary retention [mirabegron; crude reporting odds ratios (ROR): 62.1, 95% confidence interval (CI): 52.0-73.6, P<0.001, vibegron; crude ROR: 250, 95% CI : 134-483, P<0.001]. Data from patients with urinary retention were stratified by sex. In both men and women, the rate of urinary retention was higher when using the mirabegron/anti-muscarinic drug when compared to mirabegron monotherapy; its occurrence was higher in men with a history of benign prostatic hypertrophy than in those without. Weibull analysis showed that approximately 50% of sβ 3 agonist-induced urinary retention occurred within 15 days after initiation of treatment, and then gradually decreased. Although sβ 3-agonists are useful against OAB, they may induce several side effects, especially urinary retention, which can further evolve into more severe conditions. Urinary retention occurs more frequently in patients concomitantly taking medication that either increases urethral resistance or has organic factors that block the urethra. When using sβ 3-agonists, the concomitantly used medications and underlying diseases should be thoroughly reviewed, and safety monitoring should be instituted early during the treatment.
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Affiliation(s)
- T Kawazoe
- Graduate School of Integrated Arts and Sciences, Kochi University, Kochi, Japan; Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan;,
| | - T Ishida
- Kochi Medical School Hospital, Kochi, Japan
| | - K Jobu
- Kochi Medical School Hospital, Kochi, Japan
| | - K Kawada
- Graduate School of Integrated Arts and Sciences, Kochi University, Kochi, Japan; Kochi Medical School Hospital, Kochi, Japan
| | - S Yoshioka
- Graduate School of Integrated Arts and Sciences, Kochi University, Kochi, Japan; Kochi Medical School Hospital, Kochi, Japan
| | - M Miyamura
- Graduate School of Integrated Arts and Sciences, Kochi University, Kochi, Japan; Kochi Medical School Hospital, Kochi, Japan
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Ito S, Ohgaki K, Kawazoe T, Sato S, Ikeda S, Kakizoe K, Wang H, Nakamura T, Maehara S, Adachi E, Ikeda Y, Maehara Y. Survival Benefits of Laparoscopic Gastrectomy in Elderly Patients With Gastric Cancer: Focusing on Preoperative Nutritional and Inflammatory Status. Anticancer Res 2023; 43:2055-2067. [PMID: 37097677 DOI: 10.21873/anticanres.16366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 03/05/2023] [Accepted: 03/10/2023] [Indexed: 04/26/2023]
Abstract
BACKGROUND/AIM Laparoscopic gastrectomy (LG) may have greater clinical benefits as a less invasive surgery for elderly patients with gastric cancer (GC). Therefore, we aimed to evaluate the survival benefit of LG in elderly patients with GC, especially focusing on preoperative comorbidities, and nutritional and inflammatory status. PATIENTS AND METHODS Data collected from 115 patients aged ≥75 years with primary GC who underwent curative gastrectomy, comprising 58 patients who underwent open gastrectomy (OG) and 57 patients who underwent LG, were retrospectively reviewed (total cohort), and 72 propensity-matched patients (matched cohort) were selected for survival analysis. The aim of the study was to determine short- and long-term outcomes, and the clinical markers to identify a population who may benefit from LG in elderly patients. RESULTS The complication and mortality rates as a short-term outcome in the total cohort and overall survival (OS) as a long-term outcome in the matched cohort did not differ significantly between the groups. In the total cohort, advanced tumor stage and ≥3 comorbidities were independent factors for poor prognosis in terms of OS [hazard ratio (HR)=3.73, 95% confidence interval (CI)=1.78-7.78, p<0.001 and HR=2.50, 95% CI=1.35-4.61, p<0.01, respectively]. The surgical approach was not an independent risk factor for postoperative complications (grade ≥III) and OS. In subgroup analysis of the total cohort, patients with a neutrophil-lymphocyte ratio (NLR) ≥3 in the LG group demonstrated a trend toward greater OS (HR=0.26, 95% CI=0.10-0.64, interaction p<0.05). CONCLUSION LG might offer greater survival benefits than OG in frail patients such as those with high NLR.
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Affiliation(s)
- Shuhei Ito
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Kippei Ohgaki
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Tetsuro Kawazoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Shota Sato
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Shunji Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Keisei Kakizoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Huanlin Wang
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Toshihiko Nakamura
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Shinichiro Maehara
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Eisuke Adachi
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoichi Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoshihiko Maehara
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
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Kawazoe T, Ito S, Ohgaki K, Fujinaka Y, Funakoshi H, Otake A, Wang H, Morita K, Fushimi F, Ikeda Y. Successful conversion surgery following chemotherapy with an immune checkpoint inhibitor in an older adult patient with stage IVB esophageal squamous cell carcinoma: a case report. Surg Case Rep 2023; 9:51. [PMID: 36995570 PMCID: PMC10063768 DOI: 10.1186/s40792-023-01634-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND Chemotherapy and chemoradiotherapy are common treatments for esophageal squamous cell carcinoma with distant metastasis; however, the prognosis remains poor, and complete remission is difficult to achieve. Here, we report a case of an older adult patient with esophageal squamous cell carcinoma who underwent surgery following combined treatment of immunotherapy and chemotherapy and achieved pathological complete response. CASE PRESENTATION An 80-year-old woman presenting with difficulty swallowing was referred to our hospital. She was diagnosed with esophageal squamous cell carcinoma with distant metastasis of the lymph node at the dorsal side of the IVC and the left supraclavicular lymph node. She was treated with pembrolizumab, cisplatin, and 5-fluorouracil. After four pharmacotherapy courses, primary tumor and metastatic lymph node shrinkage was observed. The patient underwent thoracoscopic subtotal esophagectomy and regional lymph node dissection. The lymph node at the dorsal side of the IVC was not resected, and the left supraclavicular lymph node was removed. Histological examination revealed complete response with no residual tumor or lymph node metastasis. The patient had no recurrence 10 months postoperatively without adjuvant chemotherapy. CONCLUSIONS Conversion surgery following preoperative therapy, including immunotherapy, may be an effective treatment strategy for improving survival in patients with esophageal squamous cell carcinoma even among older adult patients.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan.
| | - Shuhei Ito
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Kippei Ohgaki
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Yoshihiko Fujinaka
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Hiroki Funakoshi
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Akihiko Otake
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Huanlin Wang
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Kazutoyo Morita
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
| | - Fumiyoshi Fushimi
- Department of Pathology, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoichi Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, 3-23-1 Shiobaru, Minami-Ku, Fukuoka-City, Fukuoka, 815-8588, Japan
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9
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Maehara Y, Oki E, Ota M, Harimoto N, Ando K, Nakanishi R, Kawazoe T, Fujimoto Y, Nonaka K, Kitao H, Iimori M, Makino K, Takechi T, Sagara T, Miyadera K, Matsuoka K, Tsukihara H, Kataoka Y, Wakasa T, Ochiiwa H, Kamahori Y, Tokunaga E, Saeki H, Yoshizumi T, Kakeji Y, Shirabe K, Baba H, Shimada M. Lineage of drug discovery research on fluorinated pyrimidines: chronicle of the achievements accomplished by Professor Setsuro Fujii. Int J Clin Oncol 2023; 28:613-624. [PMID: 36961615 DOI: 10.1007/s10147-023-02326-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/25/2023]
Abstract
Prof. Setsuro Fujii achieved significant results in the field of drug discovery research in Japan. He developed nine well-known drugs: FT, UFT, S-1 and FTD/TPI are anticancer drugs, while cetraxate hydrochloride, camostat mesilate, nafamostat mesilate, gabexate mesilate and pravastatin sodium are therapeutic drugs for various other diseases. He delivered hope to patients with various diseases across the world to improve their condition. Even now, drug discovery research based on Dr. Fujii's ideas is continuing.
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Affiliation(s)
- Yoshihiko Maehara
- Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, 815-8588, Japan.
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Mitsuhiko Ota
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Norifumi Harimoto
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, Maebashi, 371-8511, Japan
| | - Koji Ando
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Ryota Nakanishi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Yoshiaki Fujimoto
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Kentaro Nonaka
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Hiroyuki Kitao
- Oral Medicine Research Center, Fukuoka Dental College, Fukuoka, 814-0193, Japan
- Department of Molecular Cancer Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Makoto Iimori
- Oral Medicine Research Center, Fukuoka Dental College, Fukuoka, 814-0193, Japan
- Department of Molecular Cancer Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Kunio Makino
- Division of Clinical Development and Medical Affairs, Taiho Pharmaceutical Co. Ltd, Tokyo, 101-8444, Japan
| | - Teiji Takechi
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Takeshi Sagara
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Kazutaka Miyadera
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Kazuaki Matsuoka
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Hiroshi Tsukihara
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Yuki Kataoka
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Takeshi Wakasa
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Hiroaki Ochiiwa
- Discovery and Preclinical Research Division, Taiho Pharmaceutical Co. Ltd, Tsukuba, 300-2611, Japan
| | - Yoshihiro Kamahori
- Division of Clinical Development and Medical Affairs, Taiho Pharmaceutical Co. Ltd, Tokyo, 101-8444, Japan
| | - Eriko Tokunaga
- Department of Breast Oncology, National Hospital Organization Kyushu Cancer Center, Fukuoka, 811-1347, Japan
| | - Hiroshi Saeki
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, Maebashi, 371-8511, Japan
| | - Tomoharu Yoshizumi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan
| | - Yoshihiro Kakeji
- Division of Gastrointestinal Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Ken Shirabe
- Department of General Surgical Science, Graduate School of Medicine, Gunma University, Maebashi, 371-8511, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Kumamoto University, 1-1-1, Honjyo, Chuo-Ku, Kumamoto, 860-8556, Japan
| | - Mitsuo Shimada
- Department of Surgery, Tokushima University, 3-18-15 Kuramoto-Cho, Tokushima, 770-8503, Japan
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10
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Ito S, Ohgaki K, Kawazoe T, Wang H, Nakamura T, Maehara S, Adachi E, Ikeda Y, Maehara Y. Survival benefits of gastrectomy compared to conservative observation for older patients with resectable gastric cancer: a propensity score matched analysis. Langenbecks Arch Surg 2022; 407:2281-2292. [PMID: 35486150 DOI: 10.1007/s00423-022-02511-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 04/09/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE Radical gastrectomy is considered the first choice of curative treatment for older patients with gastric cancer (GC). However, there is limited data on the survival benefits of gastrectomy for older patients with GC. METHODS This was a retrospective observational study where medical records of patients aged ≥ 75 years with clinically resectable primary GC, comprising 115 patients who underwent radical surgery (S group) and 33 patients who received conservative therapy (non-S group) (total cohort) and 44 propensity-matched patients (matched cohort), were reviewed. Survival and independent risk factors, including comorbidities and systemic nutritional and inflammatory statuses, were evaluated. RESULTS In the total cohort, the 5-year overall survival (OS) in the S group was significantly higher than that in the non-S group (53.7% vs 19.7%, P < 0.0001). In the matched cohort, the 3-year OS in the S group was significantly higher than that in the non-S group (59.4% vs 15.9%, P < 0.01). Multivariate analysis of the total cohort showed that no surgery was an independent prognostic factor for poor OS (hazard ratio (HR) 3.70, 95% confidence interval (CI) 1.91-7.20, P = 0.0001). In the S group in the total cohort, the multivariate analysis showed that renal disease (HR 2.51, 95% CI 1.23-5.12, P < 0.05) was an independent prognostic factor for poor OS. CONCLUSIONS Gastrectomy for older patients improved the prognosis; however, careful patient selection is essential, especially among those with renal disease.
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Affiliation(s)
- Shuhei Ito
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan.
| | - Kippei Ohgaki
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Tetsuro Kawazoe
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Huanlin Wang
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Toshihiko Nakamura
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Shinichiro Maehara
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Eisuke Adachi
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoichi Ikeda
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
| | - Yoshihiko Maehara
- Department of Gastrointestinal Surgery, Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Fukuoka, Japan
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11
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Hibino S, Kawazoe T, Kasahara H, Itoh S, Ishimoto T, Sakata-Yanagimoto M, Taniguchi K. Inflammation-Induced Tumorigenesis and Metastasis. Int J Mol Sci 2021; 22:ijms22115421. [PMID: 34063828 PMCID: PMC8196678 DOI: 10.3390/ijms22115421] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 02/07/2023] Open
Abstract
Inflammation, especially chronic inflammation, plays a pivotal role in tumorigenesis and metastasis through various mechanisms and is now recognized as a hallmark of cancer and an attractive therapeutic target in cancer. In this review, we discuss recent advances in molecular mechanisms of how inflammation promotes tumorigenesis and metastasis and suppresses anti-tumor immunity in various types of solid tumors, including esophageal, gastric, colorectal, liver, and pancreatic cancer as well as hematopoietic malignancies.
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Affiliation(s)
- Sana Hibino
- Research Center for Advanced Science and Technology, Department of Inflammology, The University of Tokyo, Tokyo 153-0041, Japan;
| | - Tetsuro Kawazoe
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo 160-8582, Japan;
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan;
| | - Hidenori Kasahara
- National Center for Global Health and Medicine, Department of Stem Cell Biology, Research Institute, Tokyo 162-8655, Japan;
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
- Department of Pathology, New York University School of Medicine, New York, NY 10016, USA
| | - Shinji Itoh
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan;
| | - Takatsugu Ishimoto
- Gastrointestinal Cancer Biology, International Research Center of Medical Sciences (IRCMS), Kumamoto University, Kumamoto 860-0811, Japan;
| | | | - Koji Taniguchi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo 160-8582, Japan;
- Department of Pathology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
- Correspondence: ; Tel.: +81-11-706-5050
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12
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Kawazoe T, Saeki H, Oki E, Oda Y, Maehara Y, Mori M, Taniguchi K. Autocrine Leukemia Inhibitory Factor Promotes Esophageal Squamous Cell Carcinoma Progression via Src Family Kinase-Dependent Yes-Associated Protein Activation. Mol Cancer Res 2020; 18:1876-1888. [PMID: 33004621 DOI: 10.1158/1541-7786.mcr-20-0186] [Citation(s) in RCA: 3] [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: 02/25/2020] [Revised: 08/13/2020] [Accepted: 09/10/2020] [Indexed: 11/16/2022]
Abstract
The IL6 family of cytokines, including IL6 and leukemia-inhibitory factor (LIF), are induced during inflammation and are also expressed in many types of cancer where they play an important role in tumor development. IL6 family cytokines mainly activate the JAK-STAT3 pathway via the coreceptor, gp130, and IL6 is known to activate the Src family kinase (SFK)-Yes-associated protein (YAP) pathway. The current study investigated the role of autocrine LIF in human esophageal squamous cell carcinoma (ESCC) that highly expresses LIF. LIF knockdown had various effects on cancer cells, including profound changes in gene expression, suppression of cell proliferation, migration/invasion and sphere formation, and induction of apoptosis. Similar to IL6, LIF activated the SFK-YAP pathway as well as the JAK-STAT3 pathway. LIF-induced YAP activation was more important for cancer cell proliferation than LIF-induced STAT3 activation, and concomitant YAP and STAT3 activation completely compensated for the role of LIF in human ESCC growth. We also confirmed that SFK activation and LIF expression were correlated with YAP activation in human ESCC clinical samples. Furthermore, simultaneous inhibition of the SFK-YAP and JAK-STAT3 pathways in human ESCC cells was more effective at suppressing cell proliferation than single inhibition, and autocrine LIF signaling promoted human ESCC growth in vivo. Therefore, the LIF-SFK-YAP axis may represent a new therapeutic target for human ESCC. IMPLICATIONS: Autocrine LIF signaling promotes human ESCC progression via SFK-dependent YAP activation and is a new potential target of treatment for human ESCC.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Microbiology and Immunology, Keio University School of -Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Hiroshi Saeki
- Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Yoshihiko Maehara
- Kyushu Central Hospital of the Mutual Aid Association of Public School Teachers, Minami-ku, Fukuoka, Japan
| | - Masaki Mori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Koji Taniguchi
- Department of Microbiology and Immunology, Keio University School of -Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan.
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13
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Imanishi A, Kawazoe T, Hamada Y, Kumagai T, Tsutsui K, Sakai N, Eto K, Noguchi A, Shimizu T, Takahashi T, Han G, Mishima K, Kanbayashi T, Kondo H. Early detection of Niemann-pick disease type C with cataplexy and orexin levels: continuous observation with and without Miglustat. Orphanet J Rare Dis 2020; 15:269. [PMID: 32993765 PMCID: PMC7523321 DOI: 10.1186/s13023-020-01531-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/07/2020] [Indexed: 12/30/2022] Open
Abstract
Study objectives Niemann-Pick type C (NPC) is an autosomal recessive and congenital neurological disorder characterized by the accumulation of cholesterol and glycosphingolipids. Symptoms include hepatosplenomegaly, vertical supranuclear saccadic palsy, ataxia, dystonia, and dementia. Some cases frequently display narcolepsy-like symptoms, including cataplexy which was reported in 26% of all NPC patients and was more often recorded among late-infantile onset (50%) and juvenile onset (38%) patients. In this current study, we examined CSF orexin levels in the 10 patients of NPC with and without cataplexy, which supports previous findings. Methods Ten patients with NPC were included in the study (5 males and 5 females). NPC diagnosis was biochemically confirmed in all 10 patients, from which 8 patients with NPC1 gene were identified. We compared CSF orexin levels among NPC, narcoleptic and idiopathic hypersomnia patients. Results Six NPC patients with cataplexy had low or intermediate orexin levels. In 4 cases without cataplexy, their orexin levels were normal. In 5 cases with Miglustat treatment, their symptoms stabilized or improved. For cases without Miglustat treatment, their conditions worsened generally. The CSF orexin levels of NPC patients were significantly higher than those of patients with narcolepsy-cataplexy and lower than those of patients with idiopathic hypersomnia, which was considered as the control group with normal CSF orexin levels. Discussion Our study indicates that orexin level measurements can be an early alert of potential NPC. Low or intermediate orexin levels could further decrease due to reduction in the neuronal function in the orexin system, accelerating the patients’ NPC pathophysiology. However with Miglustat treatment, the orexin levels stabilized or improved, along with other general symptoms. Although the circuitry is unclear, this supports that orexin system is indeed involved in narcolepsy-cataplexy in NPC patients. Conclusion The NPC patients with cataplexy had low or intermediate orexin levels. In the cases without cataplexy, their orexin levels were normal. Our study suggests that orexin measurements can serve as an early alert for potential NPC; furthermore, they could be a marker of therapy monitoring during a treatment.
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Affiliation(s)
- A Imanishi
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - T Kawazoe
- Department of Neurology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Y Hamada
- Department of Pediatrics, Toyonaka Municipal Hospital, Toyonaka, Japan
| | - T Kumagai
- National Center for Child Health and Development, Tokyo, Japan
| | - K Tsutsui
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan
| | - N Sakai
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Eto
- Department of Pediatrics, Tokyo Women's Medical University, Tokyo, Japan
| | - A Noguchi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - T Shimizu
- Akita Mental Health and Welfare Center, Akita, Japan
| | - T Takahashi
- Department of Pediatrics, Akita University Graduate School of Medicine, Akita, Japan
| | - G Han
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - K Mishima
- Department of Psychiatry, Akita University Graduate School of Medicine, Akita, Japan.,International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
| | - T Kanbayashi
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan.
| | - H Kondo
- International Institute for Integrative Sleep Medicine (IIIS), University of Tsukuba, Tsukuba, 305-8575, Japan
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14
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Taniguchi K, Kawazoe T. Abstract 5943: The role of IL-6 family cytokines in gastrointestinal cancer. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-5943] [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 important effector of the Hippo pathway, YAP, is strongly activated in the majority of gastrointestinal cancer. However, the mechanism by which YAP is activated in gastrointestinal cancer remains unknown. Previously, we found that after intestinal injury, IL-6 family cytokines activate the Src family kinases (SFK)-YAP pathway, which enhances intestinal regeneration. Here, we found that in addition to β-catenin, loss of tumor suppressor adenomatous polyposis coli (APC) activates SFKs, YAP and STAT3, which are simultaneously activated in 60-70% of human colorectal cancer specimens. We also found that up-regulation of IL-6 signal transducer (IL-6ST/gp130), which is induced by YAP activation, causes the activation of SFKs, YAP and STAT3. We also found that leukemia inhibitory factor (LIF), one of the IL-6 family cytokines, plays an important role in human esophageal squamous cell carcinoma by activating the SFK-YAP pathway. The combination treatment of SFK and JAK inhibitors results in suppression of gastrointestinal tumors. These results suggest that these signaling pathways might be new attractive therapeutic targets in human gastrointestinal cancer.
Citation Format: Koji Taniguchi, Tetsuro Kawazoe. The role of IL-6 family cytokines in gastrointestinal cancer [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 5943.
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15
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Hirose K, Saeki H, Nakashima Y, Kamori T, Fujimoto Y, Kawazoe T, Matsuoka H, Haruta Y, Sasaki S, Jogo T, Hu Q, Tsuda Y, Ando K, Oki E, Hiratsuka R, Oda Y, Mori M. Successful multidisciplinary treatment including repeated metastasectomy for recurrent squamous cell esophageal carcinoma: a case report. Surg Case Rep 2019; 5:72. [PMID: 31053962 PMCID: PMC6499842 DOI: 10.1186/s40792-019-0634-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/24/2019] [Indexed: 12/22/2022] Open
Abstract
Background Recurrences after radical esophagectomy are common. The prognosis for recurrent esophageal cancer is generally poor. Recurrences usually occur between 1 and 3 years of surgery, with the duration of median survival after recurrence ranging from 5 to 10 months. The number of sites and involved organs vary among patients. Consequently, a standard therapeutic strategy has not been established, and the role of surgery in the management of recurrence is unclear. Case presentation A 67-year-old man presented with dysphagia 6 months previously and was diagnosed with esophageal squamous cell carcinoma (ESCC) in the upper thoracic region (T2M0M0, stage IB), for which he underwent thoracoscopy-assisted esophagectomy and lymphadenectomy. Adjuvant chemotherapy was not prescribed. Three years after the operation, he developed a solitary metastasis in the left lung, requiring segmentectomy followed by chemotherapy with combined cisplatin (CDDP) and 5-fluorouracil (5-FU). The following year, a metastatic lesion was recognized in the right lung, invading the chest wall, for which he underwent partial lobectomy with local chest wall resection. Multiple mediastinal and abdominal lymph node (LN) metastases were detected in the right lung a year later, which necessitated chemoradiation to a dose of 50.4 Gy with concomitant CDDP and 5-FU. Post-treatment computed tomography (CT) showed a good response. Positron emission tomography (PET)-CT revealed a reduction in the metastatic LNs with no fluoro-deoxy-glucose (FDG) uptake. The following year, metastases were detected in the left cervical LNs. Owing to the limited extent of metastases, resection was followed by chemoradiation to a dose of 50 Gy with CDDP and 5-FU. The following year, metastases were detected in the mediastinal LNs; chemotherapy was administered with nedaplatin and docetaxel. The follow-up CT and PET-CT demonstrated complete disappearance of the tumor, and the patient is currently surviving without recurrence for 11 years from the first curative operation. Conclusions This case demonstrates that aggressive multidisciplinary treatment including surgery and radiation to achieve local control could be a meaningful treatment strategy in cases with limited and slowly occurring recurrences.
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Affiliation(s)
- Kosuke Hirose
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Hiroshi Saeki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan.
| | - Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Tomohiro Kamori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Yoshiaki Fujimoto
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Hiroya Matsuoka
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Yasuhiro Haruta
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Shun Sasaki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Tomoko Jogo
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Qingjiang Hu
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Yasuo Tsuda
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Koji Ando
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Ryuzo Hiratsuka
- Hiratsuka Gastrointestinal Surgical Clinic, 2-7-5, Jiyugaoka, Munakata-shi, Fukuoka-ken, 811-4163, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology and Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
| | - Masaki Mori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka-shi, Fukuoka-ken, 812-8582, Japan
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16
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Kawazoe T, Taniguchi K. The Sprouty/Spred family as tumor suppressors: Coming of age. Cancer Sci 2019; 110:1525-1535. [PMID: 30874331 PMCID: PMC6501019 DOI: 10.1111/cas.13999] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/05/2019] [Accepted: 03/06/2019] [Indexed: 01/04/2023] Open
Abstract
The Ras/Raf/ERK pathway is one of the most frequently dysregulated signaling pathways in various cancers. In some such cancers, Ras and Raf are hotspots for mutations, which cause continuous activation of this pathway. However, in some other cancers, it is known that negative regulators of the Ras/Raf/ERK pathway are responsible for uncontrolled activation. The Sprouty/Spred family is broadly recognized as important negative regulators of the Ras/Raf/ERK pathway, and its expression is downregulated in many malignancies, leading to hyperactivation of the Ras/Raf/ERK pathway. After the discovery of this family, intensive research investigated the mechanism by which it suppresses the Ras/Raf/ERK pathway and its roles in developmental and pathophysiological processes. In this review, we discuss the complicated roles of the Sprouty/Spred family in tumor initiation, promotion, and progression and its future therapeutic potential.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan.,Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koji Taniguchi
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
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17
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Kudou K, Saeki H, Nakashima Y, Kamori T, Kawazoe T, Haruta Y, Fujimoto Y, Matsuoka H, Sasaki S, Jogo T, Hirose K, Hu Q, Tsuda Y, Kimura K, Ando K, Oki E, Ikeda T, Maehara Y. C-reactive protein/albumin ratio is a poor prognostic factor of esophagogastric junction and upper gastric cancer. J Gastroenterol Hepatol 2019; 34:355-363. [PMID: 30119141 DOI: 10.1111/jgh.14442] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/23/2018] [Accepted: 07/30/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM The C-reactive protein (CRP)/albumin (Alb) ratio has been reported as a novel prognostic marker in several cancers. The objective of this study was to investigate the prognostic value of the CRP/Alb ratio in patients who underwent surgery for adenocarcinoma of the esophagogastric junction (AEG) and upper gastric cancer (UGC). METHODS Data for 144 patients who underwent surgery for AEG and UGC were reviewed. The CRP/Alb ratio, neutrophil-lymphocyte ratio, platelet-lymphocyte ratio, Glasgow Prognostic Score, and controlling nutritional status score were calculated, and the relationship between these biomarkers and postoperative prognosis was analyzed. RESULTS The optimal cutoff value of the CRP/Alb ratio was determined to be 0.1. According to the cutoff value of CRP/Alb ratio, patients were divided into two groups (CRP/Alb < 0.1, n = 124; CRP/Alb ≥ 0.1, n = 20). The 5-year recurrence-free survival and overall survival (OS) rates were significantly lower in the patients with the CRP/Alb ratio ≥ 0.1 than in those with the CRP/Alb ratio < 0.1 (recurrence-free survival: 44.9% vs 77.9%, P = 0.0011; OS: 43.4% vs 82.0%, P < 0.0001). In the multivariate analyses, the N-stage, and CRP/Alb ratio ≥ 0.1 were identified as independent predictive factors for OS in patients with AEG and UGC (P = 0.0061 and P = 0.0439, respectively). CONCLUSIONS The CRP/Alb ratio was strongly associated with poor prognosis in patients who underwent surgery for AEG and UGC.
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Affiliation(s)
- Kensuke Kudou
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Endoscopy and Endoscopic Surgery, Fukuoka Dental College, Fukuoka, Japan
| | - Hiroshi Saeki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomohiro Kamori
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuhiro Haruta
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshiaki Fujimoto
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroya Matsuoka
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shun Sasaki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomoko Jogo
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kosuke Hirose
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Qingjiang Hu
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yasuo Tsuda
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koichi Kimura
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Endoscopy and Endoscopic Surgery, Fukuoka Dental College, Fukuoka, Japan
| | - Koji Ando
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuo Ikeda
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Endoscopy and Endoscopic Surgery, Fukuoka Dental College, Fukuoka, Japan
| | - Yoshihiko Maehara
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Surgery, Kyushu Central Hospital, Fukuoka, Japan
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18
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Kawazoe T, Saeki H, Edahiro K, Korehisa S, Taniguchi D, Kudou K, Nakanishi R, Kubo N, Ando K, Nakashima Y, Oki E, Fujiwara M, Oda Y, Maehara Y. A case of mixed adenoneuroendocrine carcinoma (MANEC) arising in Barrett's esophagus: literature and review. Surg Case Rep 2018; 4:45. [PMID: 29740725 PMCID: PMC5940966 DOI: 10.1186/s40792-018-0454-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/30/2018] [Indexed: 12/14/2022] Open
Abstract
Background Mixed adenoneuroendocrine carcinoma (MANEC) is defined as a neoplasm composed of both exocrine and endocrine carcinomas, each comprising at least 30% of the tumor. MANEC can occur in various organs of the gastrointestinal tract, including the esophagus, stomach, and colon. We herein provide the first case report of surgically resected MANEC arising in Barrett’s esophagus (BE). Case presentation A 70-year-old man presenting with abdominal pain was referred to our hospital. Upper endoscopy showed a type 0-IIa + IIc elevated lesion adjacent to BE. According to a biopsy specimen, the elevated lesion was diagnosed as adenocarcinoma with neuroendocrine differentiation. No lymphatic or distant metastasis was detected in the preoperative examination. Laparoscopic distal esophagectomy and proximal gastrectomy were performed, and a diagnosis of MANEC in BE was determined according to the surgically resected specimen. Conclusions A very rare case of MANEC in BE was detected. BE can be the origin of esophageal MANEC as well as adenocarcinoma. Due to the small number of esophageal or esophagogastric MANEC cases reported, further accumulation of such cases is necessary to recommend an optimal management strategy for esophageal or esophagogastric MANEC.
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Affiliation(s)
- Tetsuro Kawazoe
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.,Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroshi Saeki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
| | - Keitaro Edahiro
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Shotaro Korehisa
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Daisuke Taniguchi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Kensuke Kudou
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Ryota Nakanishi
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Nobuhide Kubo
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Koji Ando
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Yuichiro Nakashima
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Eiji Oki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
| | - Minako Fujiwara
- Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiko Maehara
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan
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19
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Okamoto T, Lin Y, Araki M, Sato W, Kawazoe T, Wakasugi N, Takewaki D, Takahashi Y, Yamamura T. Clinical course of multiple sclerosis in Japanese patients treated with glatiramer acetate. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Imanishi A, Kawazoe T, Hamada Y, Ohmori Y, Sagawa Y, Ono T, Takahashi Y, Takahashi J, Tsutui K, Kanbayashi T, Shimizu T. 0656 SYMPTOMATIC NARCOLEPSY AMONG INHERITED DISORDER,SUCH AS NIEMANN-PICK TYPE C. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.655] [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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21
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Ishii T, Shi L, Huang R, Tsujino N, Druzhbin D, Myhill R, Li Y, Wang L, Yamamoto T, Miyajima N, Kawazoe T, Nishiyama N, Higo Y, Tange Y, Katsura T. Generation of pressures over 40 GPa using Kawai-type multi-anvil press with tungsten carbide anvils. Rev Sci Instrum 2016; 87:024501. [PMID: 26931871 DOI: 10.1063/1.4941716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K, respectively, using Kawai-type multi-anvil presses (KMAP) with tungsten carbide anvils for the first time. These high-pressure generations were achieved by combining the following pressure-generation techniques: (1) precisely aligned guide block systems, (2) high hardness of tungsten carbide, (3) tapering of second-stage anvil faces, (4) materials with high bulk modulus in a high-pressure cell, and (5) high heating efficiency.
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Affiliation(s)
- T Ishii
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - L Shi
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - R Huang
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - N Tsujino
- Institute for Study of the Earth's Interior, Okayama University, Misasa 682-0193, Japan
| | - D Druzhbin
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - R Myhill
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - Y Li
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - L Wang
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - T Yamamoto
- Department of Earth and Planetary Systems Sciences, Graduate School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashi-Hiroshima 739-8526, Japan
| | - N Miyajima
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - T Kawazoe
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
| | - N Nishiyama
- Deutsche Electronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
| | - Y Higo
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Y Tange
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - T Katsura
- Bayerisches Geoinstitut, University of Bayreuth, 95440 Bayreuth, Germany
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22
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Liu Y, Morishima T, Yatsui T, Kawazoe T, Ohtsu M. Size control of sol-gel-synthesized ZnO quantum dots using photo-induced desorption. Nanotechnology 2011; 22:215605. [PMID: 21451230 DOI: 10.1088/0957-4484/22/21/215605] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We developed a sol-gel method using photo-induced desorption for size-controlled ZnO quantum dots (QDs). This method successfully controlled the size and size variance of ZnO QDs, and size fluctuations decreased from 23% to 18% depending on the illuminated light intensity. The sol-gel synthesis effectively reduced the number of defect levels that originated from oxygen defects.
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Affiliation(s)
- Y Liu
- Department of Electrical Engineering and Information Systems, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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23
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Hashiramoto A, Murata M, Kawazoe T, Yoshida K, Akiyama C, Shiozawa K, Shiozawa S. Heat shock protein 90 maintains the tumour-like character of rheumatoid synovial cells by stabilizing integrin-linked kinase, extracellular signal-regulated kinase and protein kinase B. Rheumatology (Oxford) 2010; 50:852-61. [DOI: 10.1093/rheumatology/keq385] [Citation(s) in RCA: 13] [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: 01/04/2023] Open
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24
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Yatsuii T, Hirata K, Tabata Y, Nomura W, Kawazoe T, Naruse M, Ohtsu M. In situ real-time monitoring of changes in the surface roughness during nonadiabatic optical near-field etching. Nanotechnology 2010; 21:355303. [PMID: 20689169 DOI: 10.1088/0957-4484/21/35/355303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We performed in situ real-time monitoring of the change in surface roughness during self-organized optical near-field etching. During near-field etching of a silica substrate, we detected the scattered light intensity from a continuum wave (CW) laser (lambda = 633 nm) in addition to the etching CW laser (lambda = 532 nm) light source. We discovered that near-field etching not only decreases surface roughness, but also increases the number of scatterers, as was confirmed by analyzing the AFM image. These approaches provide optimization criteria for the etching parameter and hence for further decreases in surface roughness.
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Affiliation(s)
- T Yatsuii
- School of Engineering, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
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25
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Abou El-Magd RM, Park HK, Kawazoe T, Iwana S, Ono K, Chung SP, Miyano M, Yorita K, Sakai T, Fukui K. The effect of risperidone on D-amino acid oxidase activity as a hypothesis for a novel mechanism of action in the treatment of schizophrenia. J Psychopharmacol 2010; 24:1055-67. [PMID: 19329549 DOI: 10.1177/0269881109102644] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
D-Amino acid oxidase (DAO) has been established to be involved in the oxidation of D-serine, an allosteric activator of the N-methyl-D-aspartate-type glutamate receptor in the brain, and to be associated with the onset of schizophrenia. The effect of risperidone, a benzisoxazole derivative, atypical antischizophrenic drug, on the activity of human DAO was tested using an in-vitro oxygraph system and rat C6, stable C6 transformant cells overexpressing mouse DAO (designated as C6/DAO) and pig kidney epithelial cells (LLC-PK(1)). Risperidone has a hyperbolic mixed-type inhibition, designated as 'partial uncompetitive inhibition effect', with K(i) value of 41 microM on human DAO. Risperidone exhibited a protective effect from D-amino acid induced cell death in both C6/DAO and LLC-PK(1) cells with 10% increase in viability. These data indicate the involvement of DAO activity in D-serine metabolism and also suggest a new mechanism of action to risperidone as antischizophrenic drug.
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Affiliation(s)
- R M Abou El-Magd
- Division of Enzyme Pathophysiology, The Institute for Enzyme Research, The University of Tokushima, Tokushima, Japan
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26
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Neogi A, Morkoç H, Kuroda T, Tackeuchi A, Kawazoe T, Ohtsu M. Exciton localization in vertically and laterally coupled GaN/AlN quantum dots. Nano Lett 2005; 5:213-217. [PMID: 15794598 DOI: 10.1021/nl048511x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Near-field and time-resolved photoluminescence measurements show evidence of exciton localization in vertically and laterally coupled GaN quantum dots (QDs). The binding energies in multiple period QDs (MQDs) are observed to be stronger by more than six times compared to single period QDs (SQDs). Excitons in MQDs have a short (450 ps) lifetime and persist at room temperature, while SQDs exhibit extraordinarily long (>5 ns) lifetime at 10 K due to reduced spatial overlap of electron and hole wave functions in strained QDs.
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Affiliation(s)
- A Neogi
- Department of Physics, University of North Texas, Denton, TX 76203, USA.
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27
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Kobayashi K, Sangu S, Shojiguchi A, Kawazoe T, Kitahara K, Ohtsu M. Excitation dynamics in a three-quantum dot system driven by optical near-field interaction: towards a nanometric photonic device. J Microsc 2003; 210:247-51. [PMID: 12787093 DOI: 10.1046/j.1365-2818.2003.01131.x] [Citation(s) in RCA: 16] [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] [Indexed: 11/20/2022]
Abstract
Using density operator formalism, we discuss interdot excitation energy transfer dynamics driven by the optical near-field and phonon bath reservoir, as well as coherent excitation dynamics of a quantum dot system. As an effective interaction between quantum dots induced by the optical near-field, the projection operator method gives a renormalized dipole interaction, which is expressed as a sum of the Yukawa functions and is used as the optical near-field coupling of quantum dots. We examine one- and two-exciton dynamics of a three-quantum dot system suggesting a nanometric photonic switch, and numerically obtain a transfer time comparable with the recent experimental results for CuCl quantum dots.
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Affiliation(s)
- K Kobayashi
- ERATO Localized Photon Project, Japan Science and Technology, 687-1 Tsuruma, Machida-shi, Tokyo 194-0004, Japan.
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28
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Kawazoe T, Kobayashi K, Sangu S, Ohtsu M. Demonstrating nanophotonic switching using near-field pump-probe photoluminescence spectroscopy of CuCl quantum cubes. J Microsc 2003; 209:261-6. [PMID: 12641772 DOI: 10.1046/j.1365-2818.2003.01125.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We demonstrated a novel optical switching operation using three CuCl quantum cubes with a size ratio of. Their quantized excitonic energy levels resonate with one another, and the switching mechanism was based on the resonant near-field energy transfer between the quantum cubes. Using near-field pump-probe photoluminescence spectroscopy, we succeeded in controlling the near-field energy transfer and obtained a controlled (i.e. switched) signal in a differential photoluminescence spectrum with and without a pump beam. The internal quantum efficiency of the switching operation was close to 1. These results suggest the possibility of making a nanophotonic switching device smaller than 30 nm.
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Affiliation(s)
- T Kawazoe
- Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Corporation (JST), 687-1 Tsuruma, Machida, Tokyo 194-0004, Japan.
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29
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Abstract
Second-harmonic generation (SHG) in a near-field optical-fiber probe was observed. The tip of the probe consists of a triple-tapered fiber with an aluminum coating. For a fiber probe with an aperture size of 100 nm, the SHG conversion factor was 2.0 x 10(-11)cm(2)/W , which is as large as that of a 5-mm KDP crystal. In a probe-to-probe experiment, we demonstrated that SHG took place at the aluminum coating on the fiber probe.
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30
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Fukuyama T, Koyama K, Handa F, Terui K, Miyao H, Kawazoe T. [Severe pulmonary edema in a preeclamptic patient with peripartum cardiomyopathy]. Masui 2001; 50:509-11. [PMID: 11424466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
We report a preeclamptic patient who revealed severe pulmonary edema. A 37-year-old woman, at 32-week gestation, underwent emergency cesarean section under general anesthesia. She had no particular past medical history. SpO2 was 84% (room air) on the arrival at the operating room, and a chest X-ray showed pulmonary edema. She was managed in the intensive care unit postoperatively, she received an intensive treatment (positive pressure ventilation, furosemide, and inotropic support), and was extubated successfully on the third postoperative day. From clinical course and echocardiographic findings, we consider that this pulmonary edema was caused by peripartum cardiomyopathy.
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Affiliation(s)
- T Fukuyama
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Saitama 350-8550
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31
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Shimizu K, Koyama K, Miyao H, Kawazoe T. [Endotoxin adsorption and continuous hemodiafiltration in three septic patients]. Masui 2001; 50:422-4. [PMID: 11345760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
We report 3 patients in septic shock with panperitonitis. Endotoxin adsorption by polymixin B affinity column (PMX) and continuous hemodiafiltration (CHDF) were performed immediately after the surgery. Septic shock was not improved in patient 1 and 2 despite intensive care. Multimodal approach, including complete surgical repair, cardiovascular support and blood purification methods, is essential in treating septic patients.
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Affiliation(s)
- K Shimizu
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Kawagoe 350-8550
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32
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Ito O, Suzuki S, Park S, Kawazoe T, Sato M, Saso Y, Iwasaki Y, Hata Y. Eyelid reconstruction using a hard palate mucoperiosteal graft combined with a V-Y subcutaneously pedicled flap. Br J Plast Surg 2001; 54:106-11. [PMID: 11207118 DOI: 10.1054/bjps.2000.3480] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Full-thickness eyelid defects after tumour ablation require the reconstruction of two layers, the anterior and posterior lamellae. Eyelids were successfully reconstructed after removal of malignant tumours in four patients using a hard palate mucoperiosteal graft combined with a curved V-Y subcutaneously pedicled flap. Although there have been some reports of hard palate mucosal grafts for reconstruction of the posterior lamella, the graft is not sufficiently rigid to support the reconstructed eyelid without the aid of supporting materials such as cartilage grafts. The hard palate mucoperiosteal graft seems to be rigid enough to support the reconstructed eyelid without the use of cartilage or other supporting materials. The subcutaneously pedicled V-Y advancement flap is useful for reconstruction of the anterior lamella in partial eyelid defects. We used it with a modified curved design to allow easy advancement and to make postoperative scars inconspicuous.
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Affiliation(s)
- O Ito
- Department of Plastic and Reconstructive Surgery, Kagawa Medical University, Japan
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33
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Kodaka M, Miyao H, Kawasaki J, Kawazoe T, Fujioka M, Ogawa Y. [Anesthesia for emergency surgery in 2 extremely low birth weight infants with ileus]. Masui 2000; 49:1011-4. [PMID: 11025957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Two extremely-low-birth-weight infants, weighing each 684 and 975 g at birth, underwent emergency surgery because of ileus. Our previous experience with an extremely low birth weight infant, whose hemodynamic control during the surgery had been difficult without administering extra preoperative fluid and transfusion, made us administer enough fluid and transfusion during operation although their urine output was more than 2 ml.kg-1.hr-1. We gave intravenous volume to the present 2 cases before the operations despite the level of preoperative urine output and made their hemodynamic situation more stable during surgeries. We conclude it is very important to administer some amounts of intravenous volume (approximately 8-12 ml.kg-1.hr-1) in extremely low birth weight infants for emergency surgery with ileus regardless of their preoperative urine output.
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Affiliation(s)
- M Kodaka
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School
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34
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Miyao H, Shimizu K, Kawazoe T. [A review of correlation between transfusion rate of irradiated blood and potassium load]. Masui 2000; 49:383-90. [PMID: 10793523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Transfusion of the irradiated blood has become popular in Japan to prevent the graft-versus-host disease. Case reports, however, of hyperkalemic death or lethal ECG change have been increasing since the irradiated blood was introduced nation-wide. The potassium concentration of the supernatant of irradiated blood becomes about 60 mEq.l-1 by the end of storage period. If the potassium concentration is 60 mEq.l-1, the estimated safe transfusion rate would be 6 ml.min-1 and this can not be agreed with by clinicians who transfuse daily in cases of massive bleeding. The calculated safe transfusion rate (10 mEq.hr-1 of potassium load) ranges from 6 to 72 ml.min-1 considering the storage period from the day of gathering and irradiation. This difference could affect the survival rate. On the other hand, only the difference of the potassium concentration in the supernatant between the irradiated blood and the non-irradiated blood could not explain the increasing number of hyperkalemic case report. The mechanical factors may be related to hemolysis that causes extreme hyperkalemia. Control studies of proper transfusion rate of irradiated blood should be performed to establish a safety guideline for rapid transfusion of irradiated blood.
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Affiliation(s)
- H Miyao
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Kawagoe
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35
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Kodaka M, Mori T, Tanaka K, Nomura M, Kawazoe T. [Depressive effects of propofol on apoptotic injury and delayed neuronal death after forebrain ischemia in the rat--comparison with nitrous oxide-oxygen-isoflurane]. Masui 2000; 49:130-8. [PMID: 10707515] [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: 04/14/2023]
Abstract
We investigated the brain protection effects of propofol anesthesia and nitrous oxide-oxygen-isoflurane anesthesia (GOI) using forebrain ischemic model of male Sprague-Dawley rats. Propofol group (P, n = 15) was anesthetized with propofol, oxygen and nitrogen (FIO2 = 0.33), and isoflurane group (GOI, n = 15) with 66% nitrous oxide, 33% oxygen and 1.2% isoflurane under mechanical ventilation. The anesthesia was deepened until electroencephalographic burst suppression appeared in each group. The bilateral common carotid arteries were, then, occluded for 10 minutes while the blood pressure was maintained at about 40 mmHg by venesection. The venesected blood was returned at the end of ischemic period. The animals were kept and fed in cage after emergence. On the day 2, 4, and 7, five animals of each group were sacrificed and the microscopic samples were obtained. The CA-1 cells of hippocampus were then stained with hematoxylin and eosin for the delayed neuronal death (DND) and with TUNEL method for the apoptosis. Propofol reduced the apoptosis, i.e., reduced the TUNEL positive cell count (GOI = 121.2 +/- 25.2.mm-1; P = 53.8 +/- 11.4.mm-1; P < 0.01; mean +/- SD) on the day 2 after ischemia, and also reduced the delayed neuronal death (alive CA-1 cell count; GOI = 18.1 +/- 8.9.mm-1; P = 33.1 +/- 12.8.mm-1; P < 0.01) on the day 7 after ischemia. It is important to determine the recovery interval after brain ischemia in detection of DND and apoptosis. We conclude that propofol inhibits neuronal apoptosis after brain ischemia and consequently reduces the delayed neuronal death in the CA-1 pyramidal cell layer of the hippocampus.
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Affiliation(s)
- M Kodaka
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Kawagoe
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36
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Abstract
OBJECTIVE To determine whether vascular superoxide is rapidly released by angiotensin II and is involved in vascular contraction. DESIGN The effect of superoxide dismutase (SOD) on angiotensin II induced elevation of mean arterial blood pressure was measured. Subsequently, acute production of vascular superoxide by angiotensin II and its effect on isometric tension were measured in rat aortic rings. The effects of catecholamines were concomitantly measured. METHODS AND RESULTS The acute pressor effects of angiotensin II were significantly reduced when rats were pretreated intravenously with SOD. When angiotensin II was added on aortic segments in the presence of Cypridina luciferin analog, immediate elevations of chemiluminescence were observed which were inhibited by SOD. Furthermore, angiotensin II-induced elevations of isometric tension in aortic rings were significantly reduced by SOD. The effects of epinephrine and norepinephrine were concomitantly measured and were not significant CONCLUSIONS The acute superoxide producing effect is likely to be specific to angiotensin II, because such a significant modification of the effects was not observed for catecholamines. Our results suggest that angiotensin II causes acute vascular superoxide production, which may be involved in the acute pressor effects.
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Affiliation(s)
- T Kawazoe
- Department of Plastic Surgery, Kagawa Medical University, Kita, Japan
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37
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Yoneyama H, Kosaka H, Ohnishi T, Kawazoe T, Mizoguchi K, Ichikawa Y. Reaction of neuronal nitric oxide synthase with the nitric oxide spin-trapping agent, iron complexed with N-dithiocarboxysarcosine. Eur J Biochem 1999; 266:771-7. [PMID: 10583370 DOI: 10.1046/j.1432-1327.1999.00888.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A water-soluble iron complex with N-dithiocarboxysarcosine (Fe-DTCS) has been developed as an ESR spin-trapping agent for NO and successfully applied to ESR imaging of endogenous NO production in mice. We attempted to measure NO produced by purified neuronal NO synthase (nNOS) by this method, but could not detect NO. We speculated that Fe-DTCS inhibits NOS activity. In fact, it markedly inhibited NOS activity with an IC50 value of 9.7 +/- 0.7 microM in the citrulline-formation assay. DTCS alone did not inhibit the activity. An iron complex with N-methyl-D-glucamine dithiocarbamate, a similar spin-trapping agent for NO, also inhibited the activity, with an IC50 value of 25.1 +/- 2.9 microM. Fe-DTCS suppressed cytochrome c and ferricyanide reductase activities of nNOS, and markedly increased nNOS-mediated NADPH oxidation. Concomitantly, it accelerated oxygen consumption caused by activated nNOS. These results suggest that the ESR spin-trapping agent Fe-DTCS inhibits NO synthesis by interfering with the physiological electron flow from NADPH to nNOS heme iron.
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Affiliation(s)
- H Yoneyama
- Second Department of Physiology, Kagawa Medical University, Japan
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38
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Kawazoe T, Kosaka H, Yoneyama H, Hata Y. Involvement of superoxide in acute reaction of angiotensin II in mesenteric microcirculation. Jpn J Physiol 1999; 49:437-43. [PMID: 10603428 DOI: 10.2170/jjphysiol.49.437] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Superfusion of angiotensin II (Ang II) ceased blood flow in rat mesenteric microcirculation, however, successive reflow occurred. When nitric oxide synthase inhibitor was present, the stoppage of flow occurred by the lower concentration of Ang II. Superoxide dismutase (SOD) significantly delayed the stoppage by Ang II and restored the successive reflow earlier. The acute reaction between Ang II and mesenteric artery induced immediate superoxide (O(2)(-)) production when observed by a chemiluminescence method using the Cypridina luciferin analog. The acute vascular O(2)(-) production on the addition of Ang II contributed to in vitro vascular contraction as it was significantly attenuated by SOD. The acute superoxide-producing effect is likely to be specific to Ang II because such significant modification by SOD was not observed for norepinephrine.
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Affiliation(s)
- T Kawazoe
- Department of Plastic Surgery, Kagawa Medical University, Kagawa, 761-0793, Japan
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39
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Shi SG, Wu S, Lu L, Imai A, Tanaka M, Kawazoe T. The stress-bearing ability of mucosa in complete denture-wearers. Chin J Dent Res 1998; 1:41-5. [PMID: 10557193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate the stress-bearing ability of mucosa in complete denture-wearers. METHODS The maximum bite force (MBF) was obtained in 31 voluntary complete denture-wearers with a miniature bite force instrument and a set of central bearing devices. The projective stress-bearing area in the mandible (PAM) was measured through the impression surface of the mandibular complete denture. The authors evaluated the stress-bearing ability (SBA) of mucosa in complete denture-wearers by the formula MBF/PAM. RESULTS The results showed that there was a significant positive correlation between the MBF (the mean was 15.13 kg in men and 11.39 kg in women) and the PAM (the mean was 17.15 cm2 in men and 14.46 cm2 in women) and that there was no significant difference between the mean of the SBA in men (0.89 kg/cm2) and the mean of the SBA in women (0.79 kg/cm2). The mean value of the maximum pressure borne by the mandibular edentulous region was 82 kPa (0.84 kg/cm2). CONCLUSIONS The SBA may become a valuable parameter for the design of both occlusion and reinforcement in the denture construction and for the selection of the maximum load in mechanical tests of complete dentures.
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Affiliation(s)
- S G Shi
- Department of Prosthodontics, College of Stomatology, Fourth Military Medical University, Xi'an, P. R. China
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40
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Tokunaga T, Baba S, Tanaka M, Kashiwagi K, Kimura K, Kawazoe T. Two-dimensional configuration of the myoneural junctions of human masticatory muscle detected with matrix electrode. J Oral Rehabil 1998; 25:329-34. [PMID: 9639155 DOI: 10.1046/j.1365-2842.1998.00199.x] [Citation(s) in RCA: 15] [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] [Indexed: 11/20/2022]
Abstract
Motor unit action potentials (MUAPs) propagate bidirectionally from the myoneural junction along the muscle fibre. The propagation of excitation within single motor units can be detected during sustained isometric contraction using a surface electrode array. Electromyographic (EMG) signals from an adjacent pair of contacts along the muscle fibres show a very similar wave form with a time shift. In the present study, EMG signals of the masseter and the temporal muscles were obtained from two male adults during clenching in the intercuspal position using the multichannel surface electrode with 17 x 11 contacts. The two-dimensional location of the myoneural junction for each column from the source of the propagation was estimated. Each of the myoneural junctions was located in the lower portion of the masseter muscle and in the upper portion of the temporal muscle. However, the junction was distributed within 10 mm along the muscle fibres at different contraction levels in each muscle. This noninvasive technique of multiple surface electrodes enabled us to add to knowledge of the anatomical structure of the masticatory muscles examined.
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Affiliation(s)
- T Tokunaga
- Department of Fixed Prosthodontics, Osaka Dental University, Japan
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41
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Miyao H, Kotake Y, Kawazoe T. IS THERE A CORRELATION OF HYPONATREMIA WITH TURP SYNDROME? Anesth Analg 1998. [DOI: 10.1097/00000539-199802001-00013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Kodaka M, Okamoto Y, Kakoi H, Ishizuka I, Miyao H, Kawasaki J, Kawazoe T. [The effects of premedication on induction doses of propofol and hemodynamic responses during induction]. Masui 1997; 46:1347-1353. [PMID: 9369050] [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: 05/22/2023]
Abstract
We chose five sedatives for premedication and investigated the effect of these drugs on the induction doses of propofol. One hundred patients were allocated into one of five groups of 20. These groups consisted of control group (C) given only atropine 0.5 mg i.m.; CL group (plus clonidine 0.15 mg orally); H group (plus hydroxyzine 25 mg i.m.); M group (plus midazolam 3 mg i.m.) and D group (plus diazepam 10 mg orally). The induction dose was measured using loss of count technique. Arterial pressure and heart rate were measured, before and after propofol induction as well as after intubation. We also calculated rate pressure products (RPP) at each point. The induction doses were significantly lower in M-group than those in C-group. On the other hand, in hemodynamic responses, RPP was unchanged in any groups after propofol induction and after the intubation. Both propofol and midazolam have been known to have a depressive effect on the central nervous system via GABA-A receptor-mediated inhibition, although the exact receptor for propofol is unknown. We thought, therefore, that when the interaction occurred, both midazolam and propofol had the same effect on the GABA-A receptor and increased chloride ion flux through the channels. Hydroxyzine and clonidine, however, do not share a common receptor or exert effect on the GABA-A receptor. We consider that this was one of the reasons why induction doses of both H and CL group could not decrease significantly. We concluded that midazolam 3 mg decreased propofol induction dose significantly. Both midazolam 3 mg and clonidine 0.15 mg decreased RPP before induction and hemodynamic responses to induction and intubation were stable.
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Affiliation(s)
- M Kodaka
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School
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43
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Battal NM, Hata Y, Ito O, Matsuda H, Yoshida Y, Kawazoe T, Nagao M. Reduction of burn-induced gastric mucosal injury by an endothelin receptor antagonist in rats. Burns 1997; 23:295-9. [PMID: 9248637 DOI: 10.1016/s0305-4179(97)00007-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Burn-induced stress ulcers may be a major complication in critically burned patients. The pathophysiology of gastric mucosal ulceration is relatively unknown, however reduced gastric mucosal blood flow is one contributing factor. Endothelin (ET) is a well known vasoconstrictor peptide produced by vascular endothelial cells. Endothelin has been reported to have a fundamental role in the regulation of the systemic circulation. The plasma ET level is increased by burn injury, which also causes thrombosis and vessel occlusion. Endothelin has potent ulcerogenic and vasoconstrictor actions in the stomach where it induces gastric mucosal damage and increases gastric vascular tone. In the present study, we examined the effects of a new non-selective ET receptor antagonist, TAK-044, on burn-induced gastric mucosal injury in rats. Twenty male Sprague-Dawley rats weighting an average of 400 g were burned with hot water (90 degrees C) and then divided into two equal groups. The treatment group received 1 mg/kg of TAK-044 via the dorsal vein of the penis immediately after burn trauma, while the control group received the same volume of saline. Gastric mucosal blood flow was measured with a laser Doppler flowmeter and the area of mucosal necrosis was also determined macroscopically and histologically. Inhibition of ET activity by TAK-044 after burn injury significantly improved microvascular perfusion in the gastric mucosa and prevented the progression of mucosal damage in the stomach (P < 0.05). The present study supports the role of ET in burn-induced gastric ulceration (Curling's ulcer).
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Affiliation(s)
- N M Battal
- Department of Plastic and Reconstructive Surgery, Kagawa Medical University, Japan
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44
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Battal MN, Hata Y, Matsuka K, Ito O, Matsuda H, Yoshida Y, Kawazoe T, Nago M. A new experimental model of a true myocutaneous flap in the rat: the gluteus maximus myocutaneous flap. J Reconstr Microsurg 1997; 13:251-5. [PMID: 9144137 DOI: 10.1055/s-2007-1000232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Rat myocutaneous flap models are relatively rare. The authors describe the development of a new myocutaneous flap model using the gluteus muscle in rats. A description of the anatomy of the gluteus maximus is included, along with a method of producing skin-island gluteus maximus myocutaneous flaps that can be pedicled or free. This flap model may serve as a useful tool in laboratory studies of the physiologic or pathologic changes in myocutaneous flaps, and may help to narrow the gap between experimental and clinical applications.
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Affiliation(s)
- M N Battal
- Department of Plastic Surgery, Kagawa Medical School, Japan
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45
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Battal MN, Hata Y, Matsuka K, Ito O, Matsuda H, Yoshida Y, Kawazoe T, Nagao M. Effect of a prostaglandin I2 analogue, beraprost sodium, on burn-induced gastric mucosal injury in rats. Burns 1997; 23:232-7. [PMID: 9232284 DOI: 10.1016/s0305-4179(96)00108-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Stress ulcers still have a high mortality in critically burned patients and the pathophysiology remains relatively unknown. Impaired gastric mucosal perfusion is one of the factors contributing to gastric mucosal ulceration. Burn injury causes thrombosis and vascular occlusion by increasing the blood viscosity, resulting in decreased organ perfusion. Reduced blood flow is one of the most important factors in gastric mucosal ulceration. Beraprost sodium is a chemically stable prostaglandin I2 (PGI2) analogue with antiplatelet, vasodilator and cytoprotective actions. In the present study, we examined the effects of a PGI2 analogue, beraprost sodium (Procylin, Kaken Pharmaceutical Company, Tokyo, Japan) on burn-induced gastric mucosal changes in rats. Twenty male Sprague-Dawley rats weighing an average of 400 g were burned with hot water (90 degree C) and then divided into two groups of 10 animals. One group received 0.015 mg of beraprost sodium intraperitoneally immediately after burn injury, while the control group received the same volume of saline. Gastric mucosal blood flow was measured with a laser Doppler flowmeter and the area of mucosal necrosis was also determined macroscopically and histologically. Gastric mucosal damage was significantly reduced in the beraprost sodium-treated rats and gastric mucosal blood flow was significantly improved (p < 0.05). These findings demonstrate that PGI2 plays a very important role in the pathophysiology of burn-induced Curling's ulcer and that beraprost sodium can improve gastric mucosal blood flow and reduce mucosal damage.
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Affiliation(s)
- M N Battal
- Department of Plastic Surgery, Kagawa Medical School, Japan
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46
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Battal MN, Hata Y, Matsuka K, Ito O, Matsuda H, Yoshida Y, Kawazoe T. Reduction of progressive burn injury by using a new nonselective endothelin-A and endothelin-B receptor antagonist, TAK-044: an experimental study in rats. Plast Reconstr Surg 1997; 99:1610-9. [PMID: 9145131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Endothelins are well-known vasoconstrictor peptides produced by vascular endothelial cells that have been reported to have a fundamental role in regulation of the systemic blood circulation. Plasma levels of endothelins are increased by burn injury, which also causes thrombosis and occlusion of vessels in the dermis as well as a vascular response in the adjacent uninjured dermis. Diminished blood flow leads to progressive ischemia and necrosis of the dermis beneath and around the burn (zone of stasis). If blood flow could be restored in this zone, secondary tissue damage would be minimized. In this study we examined the effects of a new nonselective endothelin receptor antagonist, TAK-044 (Takeda Chemical Industries, Ltd., Osaka, Japan), on burn trauma in rats. Fifty male Sprague-Dawley rats weighing an average of 450 gm were burned with a brass probe that produced a row of three burns 10 x 30 mm in size and two intervening unburned areas 5 x 30 mm in size. Rats were divided into five groups of 10 animals. Four groups received 0.01, 0.1, 1 or 10 mg/kg of TAK-044 via the dorsal vein of the penis immediately after burn trauma, while the control group received the same volume of saline. Skin blood flow was measured with a laser-Doppler flowmeter, and the development of edema and the area of necrotic tissue also were determined. Inhibition of endothelin activity by TAK-044 after burn injury improved microvascular perfusion in the zone of stasis and prevented the progression of tissue damage in this zone. This supports the role of endothelins in the progression of burn injury in the zone of stasis. TAK-044 was most effective in preventing progressive burn damage at a dose of 1 mg/kg. The extent of necrosis and edema was reduced significantly, and blood flow in the zone of stasis was increased in the treated rats.
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Affiliation(s)
- M N Battal
- Department of Plastic Surgery, Kagawa Medical School, Japan
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47
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Kawazoe T, Masumoto Y. Luminescence Hole Burning and Quantum Size Effect of Charged Excitons in CuCl Quantum Dots. Phys Rev Lett 1996; 77:4942-4945. [PMID: 10062673 DOI: 10.1103/physrevlett.77.4942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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48
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Tatsuta M, Saratani K, Furuichi E, Oka H, Kawazoe T. Development and validation of TMJ viscoelasticity analyzer. J Osaka Dent Univ 1996; 30:7-14. [PMID: 9485765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We developed a TMJ viscoelasticity analyzer for non-invasive evaluation of the soft tissues of the TMJ region. We used this device to measure the viscoelastic parameters, viscosity (c), elasticity (k) and mass (m), of the TMJ region for two volunteers. Experiments were performed to determine the optimum measurement conditions for the preload magnitude, head posture and clenching level. We determined measurement variability and carried out statistical analysis by analysis of variance (ANOVA). We found that the values for c and k varied significantly depending on preload magnitudes (p < 0.001). In addition, all parameters varied significantly depending on head posture. However, clenching level did not significantly affect any of the parameters. Measurement variability was below 10% for all parameters. Examination of viscoelasticity of the TMJ region provides valuable information about functional and pathological changes in the soft tissues of this area. In this study, we were able to determine the fundamental characteristics of the TMJ viscoelasticity analyzer and develop methods for examining patients with temporomandibular disorders.
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Affiliation(s)
- M Tatsuta
- Graduate School of Dentistry (Prosthodontics), Osaka Dental University, Japan
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49
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Battal MN, Hata Y, Matsuka K, Ito O, Matsuda H, Yoshida Y, Kawazoe T. Reduction of progressive burn injury by a stable prostaglandin I2 analogue, beraprost sodium (Procylin): an experimental study in rats. Burns 1996; 22:531-8. [PMID: 8909753 DOI: 10.1016/0305-4179(96)00024-1] [Citation(s) in RCA: 16] [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] [Indexed: 02/03/2023]
Abstract
Beraprost sodium is a chemically stable prostaglandin I2 analogue with antiplatelet and vasodilator actions. Burn injury causes thrombosis and vessel occlusion by increasing the blood viscosity and by thermal damage to the vascular network in the dermis. A vascular response also occurs in the uninjured dermis surrounding the site of injury. Diminished blood flow and spreading tissue oedema lead to progressive ischaemia and necrosis around the burn site (zone of stasis), with the final necrotic tissue area being larger than the initial one. If blood flow could be restored in the zone of stasis, secondary tissue damage would be minimized. In this study, we examined the effects of a prostaglandin I2 analogue, beraprost sodium (Procylin, Kaken Pharmaceutical Company, Tokyo, Japan) on burn injury in rats. Twenty male Sprague-Dawley rats weighing an average of 450 g were burned with a comb-shaped brass probe that produced a row of three burns measuring 10 x 30 mm each and two intervening unburned areas measuring 5 x 30 mm each. The rats were divided into two groups of 10 animals. One group received 0.015 mg of beraprost sodium intraperitoneally immediately after burn injury, while the control group received the same volume of saline. Skin blood flow was measured with a laser Doppler flowmeter, and the development of oedema as well as the area of necrotic tissue were also determined. The extent of skin necrosis and oedema were significantly reduced in the beraprost sodium-treated rats, and blood flow in the zone of stasis was increased. These findings demonstrate that prostaglandin I2 plays an important role in burn injury and that beraprost sodium can reduce secondary necrosis in the zone of stasis.
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Affiliation(s)
- M N Battal
- Department of Plastic Surgery, Kagawa Medical School, Japan
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50
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Miyao H, Tanaka K, Kotake Y, Kawazoe T, Fujioka T. [Distribution of irrigating fluid in intracellular and extracellular spaces during transurethral prostatectomy II--TUR syndrome and hyponatremia]. Masui 1996; 45:948-54. [PMID: 8818090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Thirty four patients undergoing transurethral resection of the prostate (TURP) under spinal anesthesia were assigned to a TUR syndrome (TURS) group (n = 7) or an asymptomatic (ASP) group (n = 27) depending on the clinical manifestations of the TUR syndrome. Blood loss and distribution of absorbed irrigating fluid (3% sorbitol-Uromatic S, 170 mOsm.kgH2O-1, Baxter) were computed together with serum osmolality, blood urea nitrogen and hematocrit. Postoperative serum sodium concentration and hematocrit were significantly lower in the TURS group than in the ASP group (124 +/- 8.7 vs. 133.9 +/- 5.9 mOsm.l-1 and 26. 8 +/- 4.2 vs. 35.0 +/- 4.6%, respectively). Postoperative serum osmotic pressure did not differ between the groups despite the difference in sodium concentration because 3% sorbitol could contribute to osmoles in the serum. The volume of irrigating fluid absorbed and its distribution into the intracellular space (delta ICF) did not differ between the groups. However, blood loss was significantly greater in the TURS group than in the ASP group (1457 +/- 434 ml vs. 173 +/- 450 ml, P < 0.01), and consequently extracellular fluid (ECF) volume was significantly reduced in the TURS group (-354 +/- 1201 ml vs. 802 +/- 1302 ml, P < 0.05). Thus, massive blood loss and reduced ECFs rather than dilutional hyponatremia, are thought to contribute to clinical manifestation of the TUR syndrome.
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Affiliation(s)
- H Miyao
- Department of Anesthesiology, Saitama Medical Center, Saitama Medical School, Kawagoe
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