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Kadono Y, Kawaguchi S, Nohara T, Shigehara K, Izumi K, Kamijima T, Seto C, Takano A, Yotsuyanagi S, Nakagawa R, Miyagi T, Aoyama S, Asahi H, Fukuda R, Mizokami A. Favorable Response of Pembrolizumab as Second-Line Therapy for Advanced Urothelial Carcinoma with Only Small Lesions to not be Considered Measurable by RECIST. Urol J 2021; 19:202-208. [PMID: 34927229 DOI: 10.22037/uj.v18i.6652] [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: 06/14/2023]
Abstract
PURPOSE Pembrolizumab is currently considered the standard second-line treatment for advanced urothelial carcinoma (UC). This study aimed to investigate the efficacy and safety of pembrolizumab in patients with advanced UC in real-world data, which is not well-reported. MATERIALS AND METHODS The study included 97 patients with advanced UC whose lesions were classified according to the Response Evaluation Criteria in Solid Tumors (RECIST). The median age was 73 years. Nineteen patients (20%) with performance status (PS) 2-4 were included. The percentages of liver, lung, bone, and lymph node metastasis were 18%, 27%, 19%, and 76%, respectively. The efficacy, safety, and risk factors for prognosis were evaluated for patients with and without measurable lesions. RESULTS The best response was complete response in nine patients (9%) and partial response in 16 patients (17%). The median progression-free survival and overall survival were 3.7 months (95% confidence interval [CI]: 2.8-4.7) and 11.8 months (95% CI: 6.7-17.0), respectively. Twenty-one (22%) patients had no measurable lesions per RECIST. In univariate and multivariate analysis, PS 2-4 and lesions by RECIST were identified as factors associated with short overall survival (OS). The median OS of 18.3 months in patients without lesions by RECIST was significantly longer than the median OS of 6.7 months in patients with lesions by RECIST (p = .012). CONCLUSION We demonstrated that good PS 0-1 and no measurable lesions, especially small lesions, by RECIST were favorable prognostic factors in patients with advanced UC treated by pembrolizumab.
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Affiliation(s)
- Yoshifumi Kadono
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Shohei Kawaguchi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Takahiro Nohara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Kazuyoshi Shigehara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Kouji Izumi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
| | - Taiki Kamijima
- Department of Urology, Toyama Prefectural Central Hospital,Toyama, Japan.
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital,Toyama, Japan.
| | - Akinobu Takano
- Department of Urology, Kouseiren Takaoka Hospital, Takaoka, Toyama, Japan.
| | | | - Ryunosuke Nakagawa
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa, Japan.
| | - Tohru Miyagi
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa, Japan.
| | - Shuhei Aoyama
- Department of Urology, Noto General Hospital, Nanao, Ishikawa, Japan.
| | - Hideki Asahi
- Department of Urology, Kaga Medical Center, Kaga, Ishikawa, Japan.
| | - Rie Fukuda
- Department of Urology, Fukui-ken Saiseikai Hospital, Fukui, Japan.
| | - Atsushi Mizokami
- Department of Urology, Fukui-ken Saiseikai Hospital, Fukui, Japan.
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Nohara T, Kadomoto S, Iwamoto H, Yaegashi H, Iijima M, Kawaguchi S, Shima T, Shigehara K, Izumi K, Kadono Y, Seto C, Mizokami A. Test clamp procedure in robot-assisted partial nephrectomy: is it a safe procedure? J Robot Surg 2021; 16:633-639. [PMID: 34313949 DOI: 10.1007/s11701-021-01288-3] [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: 05/11/2021] [Accepted: 07/20/2021] [Indexed: 11/24/2022]
Abstract
We performed test clamp procedure in robot-assisted partial nephrectomy (RAPN) to prevent massive bleeding during tumor resection and to omit dissection of non-feeding arteries around the tumor. We subsequently analyzed the safety and usefulness of the procedure. The Test clamp procedure was performed for 1 to 3 min during renal artery test ischemia prior to the actual ischemia and tumor resection. We confirmed the disappearance of blood flow around the renal tumor using color Doppler ultrasonography. If arterial blood flow around the tumor remained, we surveyed the site for other arteries that needed to be clamped and repeated the test clamp procedure until renal blood flow around the tumor disappeared. We retrospectively analyzed consecutive RAPN cases performed from July 2016 to March 2020 at our institutions and reviewed medical records. The clinical data of the RAPN cases were statistically analyzed. Sixty-four RAPN cases underwent the test clamp procedure, which was categorized as the TEST group. Test clamping was performed safely without any clamping-related complications in all cases. Eleven cases (17%) underwent partial ischemia, which was a significantly higher number than that in the control group. Massive bleeding during tumor resection was more frequent in the control group. Postoperative deterioration of estimated glomerular filtration rate did not differ significantly between both groups. Although further investigation was still necessary, our findings indicate that the test clamp procedure may be a safe and secure procedure to perform in RAPN for both patients and surgeons.
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Affiliation(s)
- Takahiro Nohara
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan. .,Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishinagae, Toyama, Toyama, 930-8550, Japan.
| | - Suguru Kadomoto
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Hiroaki Iwamoto
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Hiroshi Yaegashi
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Masashi Iijima
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Shohei Kawaguchi
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Takashi Shima
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishinagae, Toyama, Toyama, 930-8550, Japan
| | - Kazuyoshi Shigehara
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Kouji Izumi
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Yoshifumi Kadono
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishinagae, Toyama, Toyama, 930-8550, Japan
| | - Atsushi Mizokami
- Department of Urology, Kanazawa University Hospital, 13-1 Takaramachi, Kanazawa, Ishikawa, 920-8640, Japan
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Kadono Y, Kawaguchi S, Nohara T, Shigehara K, Izumi K, Kamijima T, Seto C, Takano A, Yotsuyanagi S, Nakagawa R, Miyagi T, Aoyama S, Asahi H, Fukuda R, Mizokami A. Blood Cell Count Biomarkers Predicting Efficacy of Pembrolizumab as Second-line Therapy for Advanced Urothelial Carcinoma. Anticancer Res 2021; 41:1599-1606. [PMID: 33788755 DOI: 10.21873/anticanres.14921] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 01/31/2021] [Revised: 02/13/2021] [Accepted: 02/14/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM To investigate the blood markers for predicting pembrolizumab efficacy in advanced urothelial carcinoma (UC). PATIENTS AND METHODS This study included 91 advanced UC patients. The relationship between prognosis and markers from peripheral blood cell counts, including the neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), monocyte-lymphocyte ratio (MLR), and systemic inflammation response index (SIRI=monocytes × neutrophils/lymphocytes), was evaluated. RESULTS Multivariate analysis indicated that pretreatment NLR and the 1-month-change NLR were both significantly associated with overall survival (OS) after pembrolizumab initiation. When the patients were divided into four groups according to calculated cutoffs using Cox proportional hazard model, the pretreatment NLR <2.9 and 1-month change NLR <+43% groups had a significantly better OS than the pretreatment NLR ≥2.9 and 1-month-change NLR ≥+43% groups. CONCLUSION NLR, MLR, PLR and SIRI before pembrolizumab and 1-month-change NLR in advanced UC correlated with OS after pembrolizumab treatment.
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Affiliation(s)
- Yoshifumi Kadono
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan;
| | - Shohei Kawaguchi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takahiro Nohara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kazuyoshi Shigehara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kouji Izumi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Taiki Kamijima
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Akinobu Takano
- Department of Urology, Kouseiren Takaoka Hospital, Takaoka, Japan
| | | | - Ryunosuke Nakagawa
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Tohru Miyagi
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Shuhei Aoyama
- Department of Urology, Noto General Hospital, Nanao, Japan
| | - Hideki Asahi
- Department of Urology, Kaga Medical Center, Kaga, Japan
| | - Rie Fukuda
- Department of Urology, Fukui-ken Saiseikai Hospital, Fukui, Japan
| | - Atsushi Mizokami
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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Takahashi K, Wakasugi M, Okudera H, Seto C, Furuki I, Hasegawa T, Takahara S. Importance of Continuing Education for Medical Staff to Improve the Confirmation Rate of Intent for Organ Donation. Transplant Proc 2019; 51:3213-3218. [DOI: 10.1016/j.transproceed.2019.08.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/30/2019] [Indexed: 12/31/2022]
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Takezawa Y, Izumi K, Kamijima T, Machioka K, Shima T, Iwamoto H, Nohara T, Shigehara K, Kadono Y, Seto C, Mizokami A. Effectiveness of Synthetic Polymer-coated Peripherally Inserted Central Catheter in Patients With Advanced Cancer. In Vivo 2019; 33:877-880. [PMID: 31028211 DOI: 10.21873/invivo.11553] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 02/07/2019] [Revised: 02/25/2019] [Accepted: 02/26/2019] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM A peripherally inserted central catheter (PICC) is recommended for the safe administration of anticancer agents. The effectiveness of synthetic polymer-coated and non-coated PICCs was compared. PATIENTS AND METHODS Patients with advanced cancers who had indwelling PICCs were reviewed using their medical records. Three types of PICCs were compared in terms of complications and catheter failure. RESULTS A total of 90 patients were retrospectively analyzed, including 31 with Groshong PICCs, 30 with Argyle PICC kit, and 29 with Argyle PICC kit II. The incidence of catheter failure for Groshong PICC, Argyle PICC kit, and Argyle PICC kit II per 1,000 PICC days was 4.4614, 5.6617, and 0.8658, respectively. Catheter failure-free survival in the Argyle PICC kit II group was significantly better than that in the Argyle PICC kit group (p=0.0339). CONCLUSION Argyle PICC kit II, a synthetic polymer-coated PICC, may render longer patency and prevention of catheter failure than non-coated PICCs.
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Affiliation(s)
- Yuta Takezawa
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan.,Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Kouji Izumi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Taiki Kamijima
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Kazuaki Machioka
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Takashi Shima
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Hiroaki Iwamoto
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Takahiro Nohara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Kazuyoshi Shigehara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Yoshifumi Kadono
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Atsushi Mizokami
- Department of Integrative Cancer Therapy and Urology, Kanazawa University, Graduate School of Medical Science, Kanazawa, Japan
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Kadono Y, Kawaguchi S, Nohara T, Shigehara K, Narimoto K, Izumi K, Ikeda H, Yaegashi H, Miyagi T, Nakashima T, Seto C, Mizokami A. Evaluation of Factors Affecting Metastasis for Renal Cell Carcinoma Based on Current Guidelines in Japan. Anticancer Res 2017; 37:5147-5153. [PMID: 28870947 DOI: 10.21873/anticanres.11935] [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: 06/25/2017] [Revised: 07/08/2017] [Accepted: 07/10/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM To analyze the suitability for metastasis evaluation of each pathologic item on the Fourth Edition of the General Rule for Clinical and Pathologic Studies on Renal Cell Carcinoma in Japan. PATIENTS AND METHODS We retrospectively examined 457 cases of renal operation after 2011 using the current edition of the guidelines. RESULTS The mean postoperative follow-up period was 25.3 months. Radical nephrectomy was performed in 264 cases, whereas partial nephrectomy was performed in 193 cases. Including the 33 cases discovered after operation, the overall number of metastatic cases was 68 (14.9%). Using the current edition of the guidelines, the items of histologic grade, morphology of tumor invasion, tumor pseudocapsule, and intrarenal metastasis were all correlated with distant metastasis. CONCLUSION This is the first report showing that each item on the current Japanese guidelines for renal cell cancer was useful for predicting metastasis.
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Affiliation(s)
- Yoshifui Kadono
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Shohei Kawaguchi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Takahiro Nohara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kazuyoshi Shigehara
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kazutaka Narimoto
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kouji Izumi
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroshi Yaegashi
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Tohru Miyagi
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Takao Nakashima
- Department of Urology, Ishikawa Prefectural Central Hospital, Kanazawa, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Atsushi Mizokami
- Department of Integrative Cancer Therapy and Urology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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Nohara T, Matsuyama S, Kawaguchi S, Miyagi T, Seto C, Mochizuki K. Usefulness of selective renal artery embolization for urinary fistula following partial nephrectomy: Two case reports. Mol Clin Oncol 2016; 5:158-160. [PMID: 27330790 DOI: 10.3892/mco.2016.885] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 02/26/2016] [Indexed: 12/16/2022] Open
Abstract
The present study reported two cases in which selective artery embolization were identified to assist in resolving urinary fistulae following partial nephrectomies. The first case involved a 51-year-old male who received a mini-incision partial nephrectomy with renorrhaphy. Following the operation, urine continued to discharge from the retroperitoneal drain. Selective renal artery embolization of the upper calyx at post-operation day 20 was highly effective and urine output from the drain stopped immediately. Case 2 involved a 66-year-old male, who also suffered from a urinary fistula following a partial nephrectomy. Selective renal artery embolization performed at post-operation day 21 was again effective. In each case, the upper calyx was separated from the renal pelvis. These cases demonstrated that suturing of the collecting system and renal parenchyma may result in the separation of the urine pathway, and that selective renal artery embolization appears to be a highly effective treatment in such cases.
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Affiliation(s)
- Takahiro Nohara
- Department of Urology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
| | - Satoko Matsuyama
- Department of Urology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
| | - Shohei Kawaguchi
- Department of Urology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
| | - Tohru Miyagi
- Department of Urology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
| | - Kentaro Mochizuki
- Department of Radiology, Toyama Prefectural Central Hospital, Toyama 930-8550, Japan
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Nohara T, Matsuyama S, Shima T, Kawaguchi S, Seto C. Holmium Laser Enucleation of the Prostate With Percutaneous Nephrostomy Into the Transplanted Kidney in Patient With Severe Benign Prostatic Hyperplasia With Vesicoureteral Reflux - A Case Report. Urol Case Rep 2015; 4:33-5. [PMID: 26793574 PMCID: PMC4719790 DOI: 10.1016/j.eucr.2015.11.003] [Citation(s) in RCA: 2] [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: 10/23/2015] [Accepted: 11/03/2015] [Indexed: 11/13/2022] Open
Abstract
A 66-year-old male, who had received renal transplantation 10 years before, was admitted to our hospital with urinary retention. The prostate volume was 169.2 ml. Furthermore, grade 5 vesicoureteral reflux (VUR) was shown in the cystography. Holmium laser enucleation of prostate (HoLEP) was performed, and percutaneous nephrostomy to the transplanted kidney was performed simultaneously to prevent from severe perioperative infection. After that, renal graft function improved and no urinary retention reoccurred, although surgical repair against VUR was necessary 10 months after HoLEP. We conclude that surgical treatment for BPH after kidney transplantation should be strongly considered with care for infections.
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Affiliation(s)
- Takahiro Nohara
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishi-nagae, Toyama, Toyama 930-8550, Japan
| | - Satoko Matsuyama
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishi-nagae, Toyama, Toyama 930-8550, Japan
| | - Takashi Shima
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishi-nagae, Toyama, Toyama 930-8550, Japan
| | - Shohei Kawaguchi
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishi-nagae, Toyama, Toyama 930-8550, Japan
| | - Chikashi Seto
- Department of Urology, Toyama Prefectural Central Hospital, 2-2-78 Nishi-nagae, Toyama, Toyama 930-8550, Japan
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Watanabe S, Kahara T, Seto C, Uchiyama A, Abo H, Ishikura K, Nakajima KI, Usuda R. Utility of follow-up of 131I-MIBG scintigraphy to screen pheochromocytoma. Intern Med 2009; 48:1711-2. [PMID: 19755781 DOI: 10.2169/internalmedicine.48.2507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Satoshi Watanabe
- Department of Internal Medicine, Toyama Prefectural Central Hospital, Toyama, Japan
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Chang SW, Reddy V, Pereira T, Dean BJ, Xia YQ, Seto C, Franklin RB, Karanam BV. The pharmacokinetics and disposition of MK-0524, a Prostaglandin D2receptor 1 antagonist, in rats, dogs and monkeys. Xenobiotica 2008; 37:514-33. [PMID: 17523054 DOI: 10.1080/00498250601175565] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
MK-0524 is a potent, selective and orally active Prosglandin D(2) Receptor 1 (DP(1)) antagonist currently under clinical development for the treatment of niacin-induced flushing. Experiments to study the pharmacokinetics, metabolism and excretion of MK-0524 were conducted in rats, dogs and monkeys. MK-0524 displayed linear kinetics and rapid absorption following an oral dose. Following intravenous (i.v.) administration of MK-0524 to rats and dogs (1 and 5 mg/kg), the mean Cl(p) was approximately 2 and approximately 6 ml/min/kg, the T(1/2) was approximately 7 and approximately 13 h and the Vd(ss) was approximately 1 and approximately 5 L/kg, respectively. In monkeys dosed i.v. at 3 mg/kg, the corresponding values were 8 ml/min/kg, 3 h and 1 L/kg, respectively. Following oral dosing of MK-0524 to rats (5, 25 and 100 mg/kg), dogs (5 mg/kg) and monkeys (3 mg/kg), the absorption was rapid with the mean C(max) occurring between 1 and 4 h. Absolute oral bioavailability values in rats, dogs and monkeys were 50, 70 and 8%, respectively. The major circulating metabolite was the acyl glucuronide of MK-0524 (M2), with ratios of glucuronide to the parent aglycone being highest in the monkey followed by dog and rat. In bile duct-cannulated rats and dogs, MK-0524 was eliminated primarily via acyl glucuronidation followed by biliary excretion of the acyl glucuronide, M2, the major drug-related entity in bile.
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Affiliation(s)
- S W Chang
- Department of Drug Metabolism, Merck Research Laboratories, Rahway, New Jersey 07065 , USA
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Kahara T, Seto C, Uchiyama A, Usuda D, Akahori H, Tajika E, Miwa A, Usuda R, Suzuki T, Sasano H. Preclinical Cushing's syndrome resulting from adrenal black adenoma diagnosed with diabetic ketoacidosis. Endocr J 2007; 54:543-51. [PMID: 17575368 DOI: 10.1507/endocrj.k06-071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
A right adrenal tumor was incidentally discovered on abdominal computed tomography performed on a 53-year-old Japanese man, who had been hospitalized with diabetic ketoacidosis. Normal values were obtained for adrenal hormones in the morning after an overnight fast and urinary cortisol excretion after treatment of diabetic ketoacidosis with insulin. However, overnight dexamethasone administration with 1 mg or 8 mg did not completely suppress serum cortisol levels. There were no remarkable physical findings related to Cushing's syndrome. The patient was diagnosed as having preclinical Cushing's syndrome (PCS). Histological examination of the adrenalectomy specimen demonstrated adrenal black adenoma. Blood glucose levels subsequently improved after adrenalectomy, and the patient never developed adrenal insufficiency after hydrocortisone withdrawal. The patient was treated with diet therapy alone, and maintained good glycemic control. However, the patient still showed a diabetic pattern in an oral glucose tolerance test. It seems that the existence of PCS in addition to the underlying type 2 diabetes mellitus contributed to aggravation of blood glucose levels. Although there are many aspects of the natural course of PCS that have not been thoroughly elucidated, it is necessary to remain aware that a PCS patient with abnormal glucose metabolism may develop diabetic ketoacidosis by environmental agents.
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Affiliation(s)
- Toshio Kahara
- Department of Internal Medicine, Toyama Prefectural Central Hospital, 2-2-78 Nishinagae, Toyama 930-8550, Japan
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Abstract
The spectrum of jaundice-related nephropathy can range from limited proximal tubulopathy to renal failure. The latter condition was known as cholemic nephrosis in the early literature on this subject. Elevated plasma concentrations of bile salts and bilirubin conjugated or not, putatively mediate the nephrotoxicity. A functional derangement of renal tubule cells is considered to underlie the nephropathy, but published data on renal histology are scarce. In this report, we describe the renal biopsies of two jaundiced patients with reduced creatinine clearance, and we critically review the literature on the pathogenesis of jaundice-related nephropathy. Normal renal architecture, indicating functional renal impairment, and extensive renal tubule necrosis were both observed in jaundice-related renal failure. The findings fit the original description of cholemic nephrosis. Both bilirubin and bile salts are potential nephrotoxins in animal models, but their precise role in the pathogenesis of jaundice-related nephropathy is not known. Patients with bilirubin plasma concentrations >20 mg/dL, a low serum albumin concentration or endo-toxemia, could be more prone to develop renal failure due to jaundice-related tubulopathy. In conclusion, jaundice-related nephropathy is essentially a tubulopathy, but the exact nature of the Pathogenesis is still uncertain.
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Affiliation(s)
- Chikashi Seto
- Department of Urology, Kanazawa University Graduate School of Medical Science, Ishikawa, Japan.
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Izumi K, Konaka H, Seto C, Komatsu K, Yokoyama O, Namiki M. A case of bilateral testicular calcifications in a bicycle motocross rider accompanied by bulbar urethral injury. Hinyokika Kiyo 2006; 52:383-5. [PMID: 16758731] [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: 05/10/2023]
Abstract
A 21-year-old Japanese man who was a professional bicycle motocross rider injured his perineum during a competition. Chief complaints were gross hematuria, perineal pain, and subcutaneous ecchymosis of the scrotum. Urethrocystography revealed a torn bulbar urethra and extravasation in the same region. Scrotal ultrasonography revealed small calcifications in the bilateral testes. Here, we report a case of bilateral testicular calcifications caused by the continuous shock and vibration of the saddle in an off-road bicycle rider.
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Affiliation(s)
- Kouji Izumi
- The Department of Urology, Kanazawa University School of Medicine
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14
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Seto C, Satoh K, Morishita H, Komatsu K, Namiki M. Percutaneous pneumatic and laser lithotripsy as a possible therapeutic strategy for bilateral large calculi in a horseshoe kidney. Urol Int 2004; 72:76-8. [PMID: 14730171 DOI: 10.1159/000075278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2001] [Accepted: 03/28/2002] [Indexed: 11/19/2022]
Abstract
This report concerns a case of bilateral large calculi in a horseshoe kidney. Three sessions of percutaneous nephrolithotripsy for the calculi successfully disintegrated and removed the fragments without any complications. For complete stone removal we used pneumatic and laser lithotriptors which were passed, respectively, through a rigid nephroscope and a flexible pyeloscope. It is emphasized that the selection of the most suitable lithotriptor by taking their various features into account is important in endoscopic surgery for calculi which are likely to recur such as stones accompanied by infection or for anatomically anomalous kidneys such as horseshoe kidneys.
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Affiliation(s)
- Chikashi Seto
- Department of Urology, Kanazawa University School of Medicine, Kanazawa, Ishikawa, Japan.
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15
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Koshida K, Kato H, Mizokami A, Morishita H, Seto C, Komatsu K, Kou E, Uchibayashi T, Shiobara S, Namiki M. High-dose chemotherapy with peripheral blood stem cell transplantation for advanced testicular cancer. Int J Urol 2002; 9:146-53. [PMID: 12010324 DOI: 10.1046/j.1442-2042.2002.00438.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The aim of this study was to investigate the efficacy and safety of high-dose chemotherapy (HDCT) for the treatment of patients with advanced testicular cancer. METHODS Fourteen patients were treated with high-dose carboplatin, etoposide and cyclophosphamide (with or without THP-adriamycin) followed by peripheral blood stem cell transplantation. The treatment was used for two refractory cases, a second relapse, and for consolidation after the first relapse in one case each. It was also used for nine cases as part of the first-line treatment following primary conventional-dose chemotherapy, and for one case as the first salvage for a late recurrent tumor of teratoma with malignant transformation. RESULTS The first two patients who received intensive pretreatment with cisplatin-based chemotherapy did not respond to HDCT. The two patients who were treated with HDCT as the first or second salvage therapy achieved successful outcomes. The results for the subsequent nine patients (consisting of two with stage IIIC, five with IIIB2, one with IIB, and one extragonadal seminoma) were two progressive disease, three no change and four partial remission. Only three are alive with NED following salvage surgery. Finally, a case of teratoma with malignant transformation did not respond well to two cycles of HDCT. There were no marked adverse reactions except one episode of severe neutropenic colitis. CONCLUSIONS The results demonstrated the limited efficacy of HDCT even in cases with a good to intermediate risk rating according to classification by the International Germ Cell Cancer Collaborative Group. Because treatment for relapse after HDCT is extremely difficult, new HDCT regimens consisting of drugs that are not used in induction chemotherapy need to be established.
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Affiliation(s)
- Kiyoshi Koshida
- Department of Urology, Division of Transfusion Medicine, School of Medicine, Kanazawa University, 13-12 Takaramachi, Kanazawa 920-8640, Japan.
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16
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Seto C, Grossert JS, Waddell DS, Curtis JM, Boyd RK. Effects of ionization mode on charge-site-remote and related fragmentation reactions of long-chain quaternary ammonium ions. J Am Soc Mass Spectrom 2001; 12:571-579. [PMID: 11349955 DOI: 10.1016/s1044-0305(01)00220-3] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Comparison of collisionally activated fragment spectra of long-chain quaternary ammonium ions, formed by liquid-assisted secondary ion mass spectrometry (LSIMS) and electrospray ionization (ESI), shows the latter are dominated by radical cations while the former yield mainly even-electron charge-site-remote (CSR) fragments, similar to the report for different precursors by Cheng et al., J. Am. Soc. Mass Spectrom. 1998, 9, 840. Here, mixed-site fragmentation products (formal loss of a radical directly bonded to the nitrogen plus a radical derived from the long chain) are of comparable importance for both ionization techniques. These observations are difficult to understand if the CSR ions are formed by a concerted rearrangement-elimination reaction, since precollision internal energies of the ESI ions are much lower than those of the ions from LSIMS. Alternatively, if one discards the concerted mechanism for high-energy CA, and assumes that the even-electron fragments are predominantly formed via homolytic bond cleavage, the colder radical cations from ESI survive to the detector while the more energized counterparts from LSIMS preferentially lose a hydrogen atom to yield the CSR ions, as proposed by Wysocki and Ross (Int. J. Mass Spectrom. Ion Processes 1991, 104, 179). The present work also attempts to reconcile discrepancies involving critical energies and known structures for neutral fragments.
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Affiliation(s)
- C Seto
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada
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Slassi A, Edwards L, O'Brien A, Meng CQ, Xin T, Seto C, Lee DK, MacLean N, Hynd D, Chen C, Wang H, Kamboj R, Rakhit S. 5-Alkyltryptamine derivatives as highly selective and potent 5-HT1D receptor agonists. Bioorg Med Chem Lett 2000; 10:1707-9. [PMID: 10937729 DOI: 10.1016/s0960-894x(00)00322-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of 5-alkyltryptamines (6) and the corresponding conformationally constrained analogues (8) have been synthesized. The structure activity relationships (SAR) at the 5-position of the indole skeleton and the ethylamine side chain have been studied. Functional activities were assessed using isolated rabbit saphenous vein. Potent, selective ligands were found (6e, Ki 2.5 nM, 5-HT1B/5-HT1D 125-fold) that have potential for treating acute migraine.
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Affiliation(s)
- A Slassi
- NPS Allelix Corp., Mississauga, Ontario, Canada.
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18
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Spura A, Riel RU, Freedman ND, Agrawal S, Seto C, Hawrot E. Biotinylation of substituted cysteines in the nicotinic acetylcholine receptor reveals distinct binding modes for alpha-bungarotoxin and erabutoxin a. J Biol Chem 2000; 275:22452-60. [PMID: 10791957 DOI: 10.1074/jbc.m001283200] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Although previous results indicate that alpha-subunit residues Trp(187), Val(188), Phe(189), Tyr(190), and Pro(194) of the mouse nicotinic acetylcholine receptor are solvent-accessible and are in a position to contribute to the alpha-bungarotoxin (alpha-Bgtx) binding site (Spura, A., Russin, T. S., Freedman, N. D., Grant, M., McLaughlin, J. T., and Hawrot, E. (1999) Biochemistry 38, 4912-4921), little is known about the accessibility of other residues within this region. By determining second-order rate constants for the reaction of cysteine mutants at alpha184-alpha197 with the thiol-specific biotin derivative (+)-biotinyl-3-maleimidopropionamidyl-3,6-dioxaoctanediamine , we now show that only very subtle differences in reactivity (approximately 10-fold) are detectable, arguing that the entire region is solvent-exposed. Importantly, biotinylation in the presence of saturating concentrations of the long neurotoxin alpha-Bgtx is significantly retarded for positions alphaW187C, alphaF189C, and reduced wild-type receptors (alphaCys(192) and alphaCys(193)), further emphasizing their major contribution to the alpha-Bgtx binding site. Interestingly, although biotinylation of position alphaV188C is not affected by the presence of alpha-Bgtx, erabutoxin a, which is a member of the short neurotoxin family, inhibits biotinylation at position alphaV188C, but not at alphaW187C or alphaF189C. Taken together, these results indicate that short and long neurotoxins establish interactions with distinct amino acids on the nicotinic acetylcholine receptor.
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Affiliation(s)
- A Spura
- Department of Molecular Pharmacology, Division of Biology and Medicine, Department of Chemistry, Brown University, Providence, Rhode Island 02912, USA
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19
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Denekamp C, Voinov VG, Claeys M, Seto C, Grossert JS, Waddell DS, Curtis JM, Boyd RK. Charge-remote fragmentation characteristics of functionalized alkanes in high-energy collision-induced dissociation. Rapid Commun Mass Spectrom 2000; 14:1035-1043. [PMID: 10861984 DOI: 10.1002/1097-0231(20000630)14:12<1035::aid-rcm986>3.0.co;2-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this study we report on high-energy, collision-induced dissociation processes leading to charge-remote fragmentations, using three alkyl cations, namely n-hexadecylpyridinium, n-hexadecyltriphenylphosphonium and n-hexadecyltriethylammonium, each with and without (2)H(2)-labelling at the C(9) position of the hexadecyl chain. The characteristic patterns corresponding to the formal elimination of alkane elements were observed, and the (2)H(2)-labelling at C(9) clearly affected only one charge-remote fragment ion of the homologous series. However, in addition to the expected fragment ion containing only one deuterium atom, a significant ion retaining two deuterium atoms was observed. MS/MS/MS experiments demonstrated clearly that the latter ion showed partial deuteration around the charge site, the level of deuteration depending on the structure of the original precursor cation. These results can be interpreted in terms of two novel, distinct mechanisms, one of which involves an excited state in an aromatic ring. Mixed-site fragmentation (MSF) ions were also observed from the phosphonium and ammonium ion precursors. We believe that the observation of the MSF process occurring at an sp(2)-hybridized center in the phosphonium series has not been reported previously. It thus becomes apparent that high-energy collisions leading to charge-remote reactions in fact lead to a broad range of pathways. Copyright 2000 John Wiley & Sons, Ltd.
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Affiliation(s)
- C Denekamp
- Department of Pharmaceutical Sciences, University of Antwerp (UIA), Universiteitsplein 1, B-2610 Antwerp, Belgium
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20
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Kageyama K, Yamada R, Otani S, Hasuma T, Yoshimata T, Seto C, Takada Y, Yamaguchi Y, Kogawa H, Miwa N. Abnormal cell morphology and cytotoxic effect are induced by 6-0-palmitol-ascorbate-2-0-phosphate, but not by ascorbic acid or hyperthermia alone. Anticancer Res 1999; 19:4321-5. [PMID: 10628394] [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: 02/15/2023]
Abstract
A new derivative of ascorbic acid (AsA), 6-0-palmitoyl-ascorbate 2-0-phosphate (Asc2P6Pal) was developed to enhance the antitumor activity of AsA. When Ehrlich ascites tumor cells were treated with 50 microM Asc2P6Pal at 37 degrees C or 42 degrees C for 1 h and then cultured for 20 h, most of cells exhibited some morphological abnormalities, including exudation of intracellular granules together with other contents on the cell membrane surface, resulting in cell fragmentation. The abnormal features were further enhanced by a long term culture for 96 h and heat treatment at 42 degrees C. In contrast, no abnormality was detected for untreated cells or cells treated with AsA (free acid) at 37 degrees C or 42 degrees C. Cells cultured for 96 h after the treatment suffered from inhibition of DNA synthesis and proliferation. This inhibition was markedly enhanced by combination with the hyperthermic treatment at 42 degrees C, but not for a short-term culture of 20 h after the treatment. No effects were seen upon similar treatment with AsA. The abnormal cells produced during culture for 20 h after the treatment were evaluated to be viable, because they failed to be stained with trypan blue and retained most of the DNA synthesizing ability of Asc2P6Pal-untreated cells. However, they appeared and died after a continuous 76 h of culture (96 h).
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Affiliation(s)
- K Kageyama
- Radioisotope Centre, Osaka City University Medical School, Japan
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21
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Seto C, Ikeda A, Ohkawa M. [A case report of urinary tract infection and meningitis caused by methicillin-resistant Staphylococcus aureus (MRSA) after transurethral resection of the prostate]. Nihon Hinyokika Gakkai Zasshi 1999; 90:466-9. [PMID: 10349306 DOI: 10.5980/jpnjurol1989.90.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We present a case of meningitis that developed following a urinary tract infection caused by methicillin-resistant Staphylococcus aureus (MRSA) after transurethral resection of the prostate. The patient, a 69-year-old man with diabetes mellitis, underwent transurethral resection of the prostate following a diagnosis of benign prostatic hypertrophy. On the 4 th day after surgery, high fever occurred immediately after the removal of the indwelling urethral catheter. Cultures of urine and blood revealed MRSA. On the 6 th day after surgery, severe lumbago was evident and MRSA was isolated from cerebrospinal fluid. Separate administration of arbekacin or vancomycin, to which the isolated MRSA was sensitive, was not effective. Combined therapy with fosfomycin, vancomycin and human immunoglobulin effectively relieved the inflammation. Although it is generally reported that the pathogenicity of MRSA is low in the urinary tract, this case suggests that a urinary tract infection caused by MRSA can advance to sepsis and meningitis.
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Affiliation(s)
- C Seto
- Department of Urology, Yokohama Sakae Kyosai Hospital
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22
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Abstract
The Escherichia coli bgl operon is of interest, since its expression is silent (phenotypically Bgl-), at least under standard laboratory conditions. Here we attempted to identify a trans-acting factor(s) that is presumably relevant to the regulation of bgl by a random insertion mutagenesis with mini-Tn10. These collected mutations, conferring the phenotype of Bgl+, were localized in three loci on the genetic map, two of which appeared to be hns and bglJ, which were previously implicated as the factors affecting the Bgl phenotype. The other locus at 1 to 2 min on the genetic map appeared to be a new one. In this case, the insertion mutation was found to be just in front of the leuO gene encoding a putative LysR-like DNA-binding protein. Genetic analyses revealed that overproduction of LeuO in the wild-type cells causes the phenotype of Bgl+. A leuO deletion mutant was also characterized in terms of expression of bgl. From these results, the possible function of LeuO in bgl expression will be discussed from an evolutionary and/or ecological point of view.
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Affiliation(s)
- C Ueguchi
- Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Japan.
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Ueguchi C, Seto C, Suzuki T, Mizuno T. Clarification of the dimerization domain and its functional significance for the Escherichia coli nucleoid protein H-NS. J Mol Biol 1997; 274:145-51. [PMID: 9398522 DOI: 10.1006/jmbi.1997.1381] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.1] [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
The Escherichia coli nucleoid protein, H-NS, functions as a global regulator for expression of a wide variety of genes. We recently analyzed the structure-function relationship of H-NS with special reference to the domains responsible for transcriptional repression and DNA-binding, respectively. However, identification of the presumed dimerization domain of H-NS and its functional significance was elusive. To address this particular issue, we first examined a set of N-terminally or C-terminally truncated forms of H-NS, in terms of their so-called dominant-negative effect on the in vivo function of the wild-type H-NS. The results showed that certain truncated forms exhibit such a dominant-negative effect, but others did not. As judged by the results of the dominant-negative effect, it was assumed that a relatively central portion of H-NS extending from residues 21 to 63 is involved in dimerization. This was confirmed by an in vitro chemical cross-linking analysis and a gel filtration analysis with these truncated forms of H-NS. Furthermore, the use of the dominant-negative phenotype, caused by a truncated form of H-NS (named N91), allowed us to isolate a missense mutant, which was expected to be specifically defective in dimerization. This mutant had an amino acid substitution at position 30 (Leu30 to Pro) in N91 consisting of the N-terminal 91 amino acids of H-NS. This mutant was indeed defective in the in vitro ability to form a heterodimer with the wild-type H-NS. When this particular single amino acid substitution was introduced into the full-length H-NS, the resultant H-NS mutant had lost the ability to form dimers in vitro and to function as a transcriptional repressor. These findings collectively provided us with evidence that the ability of H-NS to form a dimer is crucial for H-NS to function as a transcriptional repressor.
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Affiliation(s)
- C Ueguchi
- Laboratory of Molecular Microbiology, School of Agriculture, Nagoya 464, Chikusa-ku, Japan
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Yokoyama O, Ishiura Y, Seto C, Uchibayashi T, Ohkawa M. Endoscopic treatment of vesicoureteral reflux in patients with myelodysplasia. J Urol 1996; 155:1882-6. [PMID: 8618279] [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: 01/31/2023]
Abstract
PURPOSE We assessed the usefulness of and indications for endoscopic treatment of vesicoureteral reflux in myelodysplasia patients. MATERIALS AND METHODS A total of 26 patients treated with intermittent catheterization was divided into 11 (16 ureters) with and 15 without vesicoureteral reflux. In 9 patients (13 ureters) endoscopic correction was performed with 3% atelo-collagen and without anesthesia at the outpatient clinic. In each ureter we obtained the sum of scores for 4 risk factors for upper urinary tract deterioration: bladder compliance less than 10 ml./cm. water, grade 2 to 3 bladder deformity, detrusor-sphincter dyssynergia and urethral closure pressure 50 cm. water or greater. RESULTS No reflux was demonstrated immediately after the initial collagen injection but cystography 3 to 6 months later showed recurrent reflux in 5 ureters (38%). Repeat injection cured the reflux, with results persisting for an average of 17 months. Mean risk factor score for patients without vesicoureteral reflux was significantly lower than that for patients with reflux. In patients treated with intermittent catheterization and anticholinergic agents the mean score for ureters with an increased or unchanged reflux grade was significantly greater than for those with a decreased grade. CONCLUSIONS Endoscopic treatment of reflux appears to be safe and useful in patients with myelodysplasia. The treatment is preferable in those with high risk factor scores due to the possibility of increased reflux grade in such patients.
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Affiliation(s)
- O Yokoyama
- Department of Urology, School of Medicine, Kanazawa University, Japan
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Tokunaga S, Ohkawa M, Takashima M, Seto C, Nakamura S. D-arabinitol versus mannan antigen and candidal protein antigen as a serum marker for Candida pyelonephritis. Eur J Clin Microbiol Infect Dis 1995; 14:118-21. [PMID: 7758476 DOI: 10.1007/bf02111869] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To evaluate serum markers for the diagnosis of Candida pyelonephritis, levels of D-arabinitol, candidal mannan antigen and candidal protein antigen were measured using an enzymatic fluorometric assay, an enzyme immunoassay and a latex agglutination assay, respectively. The study group comprised 36 patients with candiduria (11 disseminated candidiasis, 9 Candida pyelonephritis and 16 colonization) and 27 without candiduria. The D-arabinitol/creatinine ratio was the only marker that differentiated between Candida pyelonephritis and colonization (p < 0.01). Using the cut-off values (1.4 mumol/mg of D-arabinitol/creatinine ratio, 0.28 of mannan/creatinine ratio (x 10(4)) and 1:4 of protein antigen titer) D-arabinitol/creatinine ratio showed the highest sensitivity in Candida pyelonephritis (77.8%) as compared to mannan/creatinine ratio (55.6%) and protein antigen titer (11.1%) although there were no differences in specificity, positive predictive value or negative predictive value. These results suggest that D-arabinitol/creatinine ratio is the most useful marker of Candida pyelonephritis.
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Affiliation(s)
- S Tokunaga
- Department of Urology, School of Medicine, Kanazawa University, Japan
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26
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Watari M, Mutsukura T, Akashi T, Aoki S, Miwa H, Shinozaki N, Mitsui T, Seto C, Aizawa N, Suzuki Y. [The usefulness of the emergency hepatobiliary scintigraphy to rule out acute cholecystitis--43 patients report]. Kaku Igaku 1992; 29:1013-8. [PMID: 1434081] [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: 12/27/2022]
Abstract
We studied emergency hepatobiliary scintigraphy in the 43 patients to rule out acute cholecystitis. After injection of 185-222 MBq (5-6 mCi) of 99mTc-EHIDA or 99mTc-HIDA, serial static scintigraphic images were obtained up to 7 hours in maximum. Of 43 patients in this study, 20 had a normal scan and finally in all of them cholecystitis was ruled out. Of the 43 patients, 14 had an abnormal scan (nonvisualized gall bladder). In 10 of them the diagnosis of acute cholecystitis was confirmed after emergency cholecystectomy. The other 9 patients of 43 had an incomplete scan mainly due to liver dysfunction. Four of them had acute cholecystitis in the cholecystectomy. These results indicate that acute cholecystitis can be excluded by the findings of gall bladder visualization in hepatobiliary scintigram. We concluded that emergency hepatobiliary scintigraphy is very useful to rule out acute cholecystitis.
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Affiliation(s)
- M Watari
- Department of Internal Medicine, Chigasaki Tokushukai Medical Center, Kanagawa
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27
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Seto C, Araie M, Sawa M, Takase M. Human corneal endothelial permeability to fluorescein and fluorescein glucuronide. Invest Ophthalmol Vis Sci 1987; 28:1457-63. [PMID: 3623832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The corneal endothelial permeability coefficient (Pac) for fluorescein and fluorescein glucuronide was determined in ten normal young volunteers. After oral administration of fluorescein, the apparent concentrations of both dyes in the corneal stroma and the anterior chamber were measured by differential fluorometry. The apparent dye levels calculated directly from the in vivo fluorometric measurements were converted to the true ones, based on the result of a normalization experiment performed in rabbit eyes. The value of Pac averaged 5.44 +/- 1.77 X 10(-4) cm/min for fluorescein and 3.77 +/- 1.10 X 10(-4) cm/min for fluorescein glucuronide (mean +/- SD, N = 20); the former was significantly greater than the latter (paired t-test, P less than 0.001). The aqueous-cornea distribution ratio was 0.50 +/- 0.14 for fluorescein and 0.66 +/- 0.16 for fluorescein glucuronide; the latter was significantly greater than the former (paired t-test, P less than 0.001). It was suggested that the previously reported values of Pac for fluorescein in the human eye were underestimates.
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28
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Seto C, Araie M. [Effects of epinephrine and timolol on near accommodation in man]. Nippon Ganka Gakkai Zasshi 1986; 90:1115-9. [PMID: 3766335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Abstract
We studied the effects of retinal detachment surgery on the standing potential of the human eye using the electrooculographic technique. Before and two weeks after surgery, we measured the relative base value (rBV) which is the base value of the affected eye divided by the base value of the fellow eye. The rBV distributed around 1.0 before surgery and decreased below 1.0 two weeks after surgery. The change in the rBV through surgery represented by the value R is defined as preoperative rBV minus postoperative rBV divided by preoperative rBV; this was closely correlated with the area of the scleral buckling. The decrease in the rBV was thought to represent the reduction in the standing potential of the operated eye, probably due to circulatory disturbance of the choroid.
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Abstract
A method for isolating fluorescein glucuronide from the urine using silica gel chromatography and preparative high-performance liquid chromatography is described. The product obtained was free from significant fluorescent impurity on thin-layer chromatography and analytical high-performance liquid chromatography.
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Seto C, Araie M, Takase M. Study of fluorescein glucuronide. II. A comparative ocular kinetic study of fluorescein and fluorescein glucuronide. Graefes Arch Clin Exp Ophthalmol 1986; 224:113-7. [PMID: 3949183 DOI: 10.1007/bf02141481] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Comparative studies of fluorescein and fluorescein glucuronide were carried out. Binding to human serum protein was studied using an Amicon MPS-3 ultrafiltration unit; it averaged 63% for fluorescein glucuronide and 85% for fluorescein. Intracameral penetration of both compounds was studied in the human eye, and the concentration changes of both compounds in the plasma ultrafiltrate and in the anterior chamber were analyzed, based on Davson's equation. The coefficient of entry into the anterior chamber (ki) was 0.018 +/- 0.007 h-1 (mean +/- SD, n = 10) for fluorescein glucuronide and 0.054 +/- 0.033 h-1 for fluorescein, and the former was significantly lower than the latter (P less than 0.005). The rate of loss from the vitreous (kv) was studied by injecting each compound into the vitreous of the pigmented rabbit and following the fluorescein intensity changes in it. It was 0.042 +/- 0.008 h-1 (mean +/- SD, n = 8) for fluorescein glucuronide and 0.17 +/- 0.01 h-1 for fluorescein, and the former was significantly smaller than the latter (P less than 0.001). Intraperitoneal injection of probenecid significantly decreased the kv of fluorescein but had little effection that of fluorescein glucuronide. It was suggested that fluorescein glucuronide is lost from the vitreous mainly by a passive mechanism.
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Seto C, Araie M, Takase M, Minoda K. [The effects of fluorescein monoglucuronide on the calculation of the transfer coefficient by diffusion (kdpa) after systemic administration of fluorescein]. Nippon Ganka Gakkai Zasshi 1984; 88:1572-80. [PMID: 6532199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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33
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Awazu R, Tomotari H, Miyashita F, Seto C. [Pathology and clinical aspects of the kidney]. Rinsho Byori 1969; 17:27-31. [PMID: 5814272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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34
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Matsuyama S, Morikawa N, Shibata J, Seto C, Hayashi A. [Case of Rh incompatibility surviving after exchange transfusion]. Iryo 1966; 20:92-4. [PMID: 5949835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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35
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Matsuyama S, Seto C. [Intraperitoneal exposure of the ureter during operation for cervical carcinoma of the uterus]. Shujutsu 1966; 20:40-4. [PMID: 6006241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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