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Furusho K, Yoshihara T, Tsukikawa H, Inada K, Kimura M, Melli A, Chung E, Shiramoto M, Matsuki S, Irie S. The Influence of Various Time Points After Standing up on Orthostatic Blood Pressure and Pulse Rate. Clin Ther 2017. [DOI: 10.1016/j.clinthera.2017.05.168] [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: 11/28/2022]
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Yoshinaga N, Matsuki S, Niitsu T, Sato Y, Tanaka M, Ibuki H, Takanashi R, Ohshiro K, Ohshima F, Asano K, Kobori O, Yoshimura K, Hirano Y, Sawaguchi K, Koshizaka M, Hanaoka H, Nakagawa A, Nakazato M, Iyo M, Shimizu E. Cognitive Behavioral Therapy for Patients with Social Anxiety Disorder Who Remain Symptomatic following Antidepressant Treatment: A Randomized, Assessor-Blinded, Controlled Trial. Psychother Psychosom 2017; 85:208-17. [PMID: 27230862 DOI: 10.1159/000444221] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 01/17/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND Although antidepressants are still a commonly used treatment for social anxiety disorder (SAD), a significant proportion of patients fail to remit following antidepressants. However, no standard approach has been established for managing such patients. This study aimed to examine the effectiveness of cognitive behavioral therapy (CBT) as an adjunct to usual care (UC) compared with UC alone in SAD patients who remain symptomatic following antidepressant treatment. METHODS This was a prospective randomized open-blinded end-point study with two parallel groups (CBT + UC, and UC alone, both for 16 weeks) conducted from June 2012 to March 2014. SAD patients who remain symptomatic following antidepressant treatment were recruited, and a total sample size of 42 was set based on pilot results. RESULTS Patients were randomly allocated to CBT + UC (n = 21) or UC alone (n = 21). After 16 weeks, adjusted mean reduction in the Liebowitz Social Anxiety Scale from baseline for CBT + UC and UC alone was -40.87 and 0.68, respectively; the between-group difference was -41.55 (-53.68 to -29.42, p < 0.0001). Response rates were 85.7 and 10.0% for CBT + UC and UC alone, respectively (p < 0.0001). The corresponding remission rates were 47.6 and 0.0%, respectively (p = 0.0005). Significant differences were also found in favor of CBT + UC for social anxiety symptoms, depressive symptoms, and functional impairment. CONCLUSIONS Our results suggest that in SAD patients who have been ineffectively treated with antidepressants, CBT is an effective treatment adjunct to UC over 16 weeks in reducing social anxiety and related symptoms.
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Affiliation(s)
- Naoki Yoshinaga
- Organization for Promotion of Tenure Track, University of Miyazaki, Miyazaki, Japan
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Hashimoto T, Shiina A, Hasegawa T, Kimura H, Oda Y, Niitsu T, Ishikawa M, Tachibana M, Muneoka K, Matsuki S, Nakazato M, Iyo M. Effect of mirtazapine versus selective serotonin reuptake inhibitors on benzodiazepine use in patients with major depressive disorder: a pragmatic, multicenter, open-label, randomized, active-controlled, 24-week trial. Ann Gen Psychiatry 2016; 15:27. [PMID: 27777607 PMCID: PMC5070072 DOI: 10.1186/s12991-016-0115-1] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/19/2016] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND This study aimed to evaluate whether selecting mirtazapine as the first choice for current depressive episode instead of selective serotonin reuptake inhibitors (SSRIs) reduces benzodiazepine use in patients with major depressive disorder (MDD). We concurrently examined the relationship between clinical responses and serum mature brain-derived neurotrophic factor (BDNF) and its precursor, proBDNF. METHODS We conducted an open-label randomized trial in routine psychiatric practice settings. Seventy-seven MDD outpatients were randomly assigned to the mirtazapine or predetermined SSRIs groups, and investigators arbitrarily selected sertraline or paroxetine. The primary outcome was the proportion of benzodiazepine users at weeks 6, 12, and 24 between the groups. We defined patients showing a ≥50 % reduction in Hamilton depression rating scale (HDRS) scores from baseline as responders. Blood samples were collected at baseline, weeks 6, 12, and 24. RESULTS Sixty-five patients prescribed benzodiazepines from prescription day 1 were analyzed for the primary outcome. The percentage of benzodiazepine users was significantly lower in the mirtazapine than in the SSRIs group at weeks 6, 12, and 24 (21.4 vs. 81.8 %; 11.1 vs. 85.7 %, both P < 0.001; and 12.5 vs. 81.8 %, P = 0.0011, respectively). No between-group difference was observed in HDRS score changes. Serum proBDNF levels were significantly decreased (χ2 = 8.5, df = 3, P = 0.036) and serum mature BDNF levels were temporarily significantly decreased (F = 3.5, df = 2.4, P = 0.027) in the responders of both groups at week 24. CONCLUSION This study demonstrated mirtazapine as the first-choice antidepressant for current depressive episodes may reduce benzodiazepine use in patients with MDD. Trial registration UMIN000004144. Registered 2nd September 2010. The date of enrolment of the first participant to the trial was 24th August 2010. This study was retrospectively registered 9 days after the first participant was enrolled.
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Affiliation(s)
- Tasuku Hashimoto
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan ; Sodegaura Satsukidai Hospital, 5-21 Nagauraekimae, Sodegaura-shi, 299-0246 Japan
| | - Akihiro Shiina
- Department of Psychiatry, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856 Japan ; Kokoronokenko Tsudanuma Clinic, 2-13-13 Maebaranishi, Funabashi-shi, Chiba, 274-0825 Japan
| | - Tadashi Hasegawa
- Department of Psychiatry, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, 260-0856 Japan ; Kokoronokenko Tsudanuma Clinic, 2-13-13 Maebaranishi, Funabashi-shi, Chiba, 274-0825 Japan
| | - Hiroshi Kimura
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan ; Kokoronokaze Funabashi Clinic, 1-26-2 Motomachi, Funabashi-shi, Chiba, 273-0005 Japan
| | - Yasunori Oda
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan
| | - Tomihisa Niitsu
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan ; Fujita Hospital, 3292-Ho Yokaichiba, Sosa-shi, Chiba, 289-2146 Japan
| | - Masatomo Ishikawa
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan
| | - Masumi Tachibana
- Fujita Hospital, 3292-Ho Yokaichiba, Sosa-shi, Chiba, 289-2146 Japan
| | | | - Satoshi Matsuki
- Research Center for Child Mental Development, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan ; Kisarazu Hospital, 2-3-1 Iwane, Kisarazu-shi, Chiba, 292-0061 Japan
| | - Michiko Nakazato
- Research Center for Child Mental Development, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan ; Kokoronokaze Funabashi Clinic, 1-26-2 Motomachi, Funabashi-shi, Chiba, 273-0005 Japan
| | - Masaomi Iyo
- Department of Psychiatry, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670 Japan
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Nemoto O, Furue M, Nakagawa H, Shiramoto M, Hanada R, Matsuki S, Imayama S, Kato M, Hasebe I, Taira K, Yamamoto M, Mihara R, Kabashima K, Ruzicka T, Hanifin J, Kumagai Y. The first trial of CIM331, a humanized antihuman interleukin-31 receptor A antibody, in healthy volunteers and patients with atopic dermatitis to evaluate safety, tolerability and pharmacokinetics of a single dose in a randomized, double-blind, placebo-controlled study. Br J Dermatol 2015; 174:296-304. [PMID: 26409172 DOI: 10.1111/bjd.14207] [Citation(s) in RCA: 127] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND The cytokine interleukin-31 (IL-31) is considered to be responsible for the development of pruritus in humans. At present, no available evidence has been provided on the safety and efficacy of blocking the IL-31 signal in humans for the amelioration of pruritus in atopic dermatitis (AD). CIM331 is a humanized antihuman IL-31 receptor A (IL-31RA) monoclonal antibody, which binds to IL-31RA to inhibit subsequent IL-31 signalling. OBJECTIVES To assess the tolerability, safety, pharmacokinetics and preliminary efficacy of CIM331 in healthy Japanese and white volunteers, and Japanese patients with AD. METHODS In this randomized, double-blind, placebo-controlled phase I/Ib study, CIM331 was administered in a single subcutaneous dose. The primary outcomes were safety and tolerability; the exploratory analysis was efficacy. RESULTS No deaths, serious adverse events (AEs) or discontinuations due to AEs were reported in any part of the study. No dose-dependent increase in the incidence of AEs occurred in any part of the study. In healthy volunteers, all AEs occurred once in the placebo groups, and increased creatine phosphokinase was more common in the CIM331 groups. In patients with AD, CIM331 reduced pruritus visual analogue scale score to about -50% at week 4 with CIM331 compared with -20% with placebo. CIM331 increased sleep efficiency and decreased the use of hydrocortisone butyrate. CONCLUSIONS A single subcutaneous administration of CIM331 was well tolerated in healthy volunteers and patients with AD. It decreased pruritus, sleep disturbance and topical use of hydrocortisone. CIM331 may become a novel therapeutic option for AD by inhibiting IL-31.
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Affiliation(s)
- O Nemoto
- Kojinkai, Kita13-Jo Naika-Hifuka Clinic, Hokkaido, Japan
| | - M Furue
- Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - H Nakagawa
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
| | - M Shiramoto
- Medical Co. LTA Hakata Clinic, Fukuoka, Japan
| | - R Hanada
- Medical Co. LTA Sumida Hospital, Tokyo, Japan
| | - S Matsuki
- Medical Co. LTA Kyushu Clinical Pharmacology Research Clinic, Fukuoka, Japan
| | - S Imayama
- Medical Co. LTA Kyushu Clinical Pharmacology Research Clinic, Fukuoka, Japan
| | - M Kato
- Kojinkai, Kita13-Jo Naika-Hifuka Clinic, Hokkaido, Japan
| | - I Hasebe
- Kojinkai, Kita13-Jo Naika-Hifuka Clinic, Hokkaido, Japan
| | - K Taira
- Medical Co. LTA Kyushu Clinical Pharmacology Research Clinic, Fukuoka, Japan
| | - M Yamamoto
- Translational Clinical Research Division, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - R Mihara
- Translational Clinical Research Division, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
| | - K Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T Ruzicka
- Department of Dermatology and Allergology, Ludwig-Maximilian-University Munich, Munich, Germany
| | - J Hanifin
- Department of Dermatology, Oregon Health and Science University, Portland, OR, U.S.A
| | - Y Kumagai
- Kitasato University School of Medicine, Kitasato Clinical Research Center, Kanagawa, Japan
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Yono M, Matsuki S, Chung E, Mugitani A, Tanaka T, Kan S, Chiyoda T, Kaji Y. Urinary Occult Blood Tests In Healthy Male and Female Volunteers From Three Different Age Groups. Clin Ther 2015. [DOI: 10.1016/j.clinthera.2015.05.091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yoshinaga N, Ohshima F, Matsuki S, Tanaka M, Kobayashi T, Ibuki H, Asano K, Kobori O, Shiraishi T, Ito E, Nakazato M, Nakagawa A, Iyo M, Shimizu E. A preliminary study of individual cognitive behavior therapy for social anxiety disorder in Japanese clinical settings: a single-arm, uncontrolled trial. BMC Res Notes 2013; 6:74. [PMID: 23448435 PMCID: PMC3602169 DOI: 10.1186/1756-0500-6-74] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 02/26/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cognitive behavior therapy (CBT) is regarded as an effective treatment for social anxiety disorder (SAD) in Europe and North America. Individual CBT might be acceptable and effective for patients with SAD even in non-Western cultures; therefore, we conducted a feasibility study of individual CBT for SAD in Japanese clinical settings. We also examined the baseline predictors of outcomes associated with receiving CBT. METHODS This single-arm trial employed a 14-week individual CBT intervention. The primary outcome was the self-rated Liebowitz Social Anxiety Scale, with secondary measurements of other social anxiety and depressive severity. Assessments were conducted at baseline, after a waiting period before CBT, during CBT, and after CBT. RESULTS Of the 19 subjects screened, 15 were eligible for the study and completed the outcome measures at all assessment points. Receiving CBT led to significant improvements in primary and secondary SAD severity (ps < .001). The mean total score on the Liebowitz Social Anxiety Scale improved from 91.8 to 51.7 (before CBT to after CBT), and the within-group effect size at the end-point assessment was large (Cohen's d = 1.71). After CBT, 73% of participants were judged to be treatment responders, and 40% met the criteria for remission. We found no significant baseline predictors of those outcomes. CONCLUSION Despite several limitations, our treatment-which comprises a 14-week, individual CBT program-seems feasible and may achieve favorable treatment outcomes for SAD in Japanese clinical settings. Further controlled trials are required in order to address the limitations of this study. TRIAL REGISTRATION UMIN-CTR UMIN000005897.
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Affiliation(s)
- Naoki Yoshinaga
- Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan.
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Yoshinaga N, Niitsu T, Hanaoka H, Sato Y, Ohshima F, Matsuki S, Kobori O, Nakazato M, Nakagawa A, Iyo M, Shimizu E. Strategy for treating selective serotonin reuptake inhibitor-resistant social anxiety disorder in the clinical setting: a randomised controlled trial protocol of cognitive behavioural therapy in combination with conventional treatment. BMJ Open 2013; 3:e002242. [PMID: 23408078 PMCID: PMC3586054 DOI: 10.1136/bmjopen-2012-002242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 01/23/2013] [Accepted: 01/24/2013] [Indexed: 12/04/2022] Open
Abstract
INTRODUCTION Pharmacotherapy and cognitive behavioural therapy (CBT) are consistently effective as first-line treatments for social anxiety disorders (SADs). Nevertheless, pharmacotherapy is often the first choice in clinical practice. In many countries, the first line of pharmacotherapy involves the administration of a selective serotonin reuptake inhibitor (SSRI). Although a significant proportion of patients with SAD fail to respond to the initial SSRI administration, there is no standard approach to the management of SSRI-resistant SAD. This paper describes the study protocol for a randomised controlled trial to evaluate the clinical effectiveness of CBT as a next-step strategy, concomitant with conventional treatment, for patients with SSRI-resistant SAD. METHODS AND ANALYSIS This Prospective Randomized Open Blinded End-point study is designed with two parallel groups, with dynamic allocation at the individual level. The interventions for the two groups are conventional treatment, alone, and CBT combined with conventional treatment, for 16 weeks. The primary end-point of SAD severity will be assessed by an independent assessor using the Liebowitz Social Anxiety Scale, and secondary end-points include severity of other social anxieties, depressive severity and functional impairment. All measures will be assessed at weeks 0 (baseline), 8 (halfway point) and 16 (postintervention) and the outcomes will be analysed based on the intent-to-treat. Statistical analyses are planned for the study design stage so that field materials can be appropriately designed. ETHICS AND DISSEMINATION This study will be conducted at the academic outpatient clinic of Chiba University Hospital. Ethics approval was granted by the Institutional Review Board of Chiba University Hospital. All participants will be required to provide written informed consent. The trial will be implemented and reported in accordance with the recommendations of CONSORT. CLINICAL TRIAL REGISTRATION NUMBER UMIN000007552.
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Affiliation(s)
- Naoki Yoshinaga
- Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, Chiba, Japan
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Tomihisa Niitsu
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Hideki Hanaoka
- Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Yasunori Sato
- Clinical Research Center, Chiba University Hospital, Chiba, Japan
| | - Fumiyo Ohshima
- Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, Chiba, Japan
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Satoshi Matsuki
- Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, Chiba, Japan
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Osamu Kobori
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
- Center for Forensic Mental Health, Chiba University, Chiba, Japan
| | - Michiko Nakazato
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Akiko Nakagawa
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Masaomi Iyo
- Center for Forensic Mental Health, Chiba University, Chiba, Japan
- Department of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Eiji Shimizu
- Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, Chiba, Japan
- Research Center for Child Mental Development, Chiba University Graduate School of Medicine, Chiba, Japan
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Yonezawa K, Horie O, Yoshioka A, Matsuki S, Tenjin T, Tsukamura Y, Yoneda M, Shibata K, Koike Y, Nomura T, Yokoyama M, Urahama N, Ito M. Association between the neutrophil myeloperoxidase index and subsets of bacterial infections. Int J Lab Hematol 2011; 32:598-605. [PMID: 20201994 DOI: 10.1111/j.1751-553x.2010.01227.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The mean myeloperoxidase index (MPXI) is calculated during the routine complete blood count performed using the autoanalyzer ADVIA120/2120. The pattern of changes in the neutrophil myeloperoxidase levels in patients with specific infectious diseases was analyzed by assessing the MPXI levels. In patients with bacterial sepsis, identified by positive blood-culture tests, with (n = 29) and without (n = 51) systemic inflammatory response syndrome, the mean MPXI significantly reduced to -3.18 and -2.06, respectively. In contrast, among patients with nontuberculous nonseptic bacterial infections (n = 40), the mean MPXI significantly elevated to 5.51, while tuberculosis patients (n = 37) and patients with viral infection (n = 60) showed an unchanged MPXI (mean values, -0.46 and -1.06, respectively). Among the parameters of inflammation, only the C-reactive protein values showed a weak correlation with the MPXI levels. [Conclusion] These results indicate that MPXI is correlated with some specific infectious states, i.e. MPXI is low in bacterial sepsis and high in nontuberculous nonseptic bacterial infections. MPXI appears to be an independent and useful biomarker for the diagnosis and follow-up of infectious diseases, especially when the MPXI values are obtained at regular intervals during the disease courses of the patients.
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Affiliation(s)
- K Yonezawa
- Laboratory of Hematology, Division of Medical Biophysics, Kobe University Graduate School of Health Sciences, Suma-ku, Kobe, Japan
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Doležal J, Matsuki S, Hara T. Effects of dwarf-bamboo understory on tree seedling emergence and survival in a mixed-oak forest in northern Japan: a multi-site experimental study. COMMUNITY ECOL 2009. [DOI: 10.1556/comec.10.2009.2.13] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Ikeda H, Seko S, Kanaoka R, Oki M, Mizutani M, Matsuki S, Sonobe H. UP-03.31. Urology 2006. [DOI: 10.1016/j.urology.2006.08.889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ichiyanagi O, Sasagawa I, Suzuki Y, Matsuki S, Itoh K, Miura M, Tomita Y. Successful treatment of retrograde ejaculation with amezinium. Arch Androl 2003; 49:215-7. [PMID: 12746100 DOI: 10.1080/01485010390196733] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The effect of amezinium, a new type of antihypotensive agent, on retrograde ejaculation was evaluated in 3 patients with retrograde ejaculation. The patients received 10 mg amezinium orally once a day. All patients achieved antegrade ejaculation. Semen analyses revealed 6-50 x 10(6)/mL (mean 28.7 x 10(6)/mL) sperm with a motility of 20-50% (mean 36.7%). The wives of 2 patients became pregnant within 6 months of the initial treatment. None of the patients had any side effects. It would appear that amezinium is a useful treatment for retrograde ejaculation.
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Affiliation(s)
- O Ichiyanagi
- Department of Urology, Yamagata University School of Medicine, Yamagata, Japan
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Ishii Y, Nakamura K, Matsuki S, Uemura N, Muraguchi R, Nakagawa M, Nakano S, Nakatsuka K. Pharmacokinetic and Pharmacodynamic Differences between Ocular and Nasal Instillation of Carteolol on Intraocular Pressure and Heart Rate in Japanese Men with High CYP2D6 Activity. J Clin Pharmacol 2002. [DOI: 10.1177/009127002401102948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Sasagawa I, Matsuki S, Suzuki Y, Iuchi Y, Tohya K, Kimura M, Nakada T, Fujii J. Possible involvement of the membrane-bound form of peroxiredoxin 4 in acrosome formation during spermiogenesis of rats. ACTA ACUST UNITED AC 2001; 268:3053-61. [PMID: 11358524 DOI: 10.1046/j.1432-1327.2001.02200.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Peroxiredoxins are novel peroxidases that exhibit divergent biological functions. The fourth member, Prx4, is synthesized with a signal sequence and, after processing, secreted as a 27-kDa form in most tissues. A 31-kDa Prx4 which corresponds to the unprocessed, membrane-bound form is found only in testis. This study was undertaken in order to investigate the role of the membrane-bound Prx4 during spermiogenesis in rats. The Prx4 transcript was observed in testes at 14 days of age, the age before puberty, and its level increased only slightly during aging. Only the secretable form of Prx4 was present before 30 days of age, but the membrane-bound Prx4 became detectable in adult testes, although sum of the two forms appeared to be the same after 21 days old. While weak immunoreactivity to the Prx4 antibody was detected in spermatogenic cells for all ages, a strong immunoreactivity was observed in the elongating spermatid and residual body of adult testis. Prx4 was present in the lumen of the endoplasmic reticulum, Golgi bodies, and the perinuclear space in young rat testes. However, the localization of Prx4 was restricted to membranes of the acrosomal vesicle of the elongated spermatid and was not detected in spermatozoon. Once spermiogenesis is accomplished, vesicles containing the membrane-bound Prx4 were released into the residual body, along with residual membranous components. Thus the conversion of the soluble form to the membrane-bound form may have a role in the acrosome formation during vesicular reorganization during spermiogenesis.
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Affiliation(s)
- I Sasagawa
- Department of Urology, Yamagata University School of Medicine, Yamagata, Japan
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Shibasaki T, Sasagawa I, Suzuki Y, Yazawa H, Ichiyanagi O, Matsuki S, Miura M, Nakada T. Effect of testosterone replacement therapy on serum PSA in patients with Klinefelter syndrome. Archives of Andrology 2001; 47:173-6. [PMID: 11695839 DOI: 10.1080/014850101753145861] [Citation(s) in RCA: 6] [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: 10/27/2022]
Abstract
The effect of testosterone replacement therapy on serum prostate-specific antigen (PSA) was investigated in 11 patients with Klinefelter syndrome. Significant increases in serum testosterone level and prostate volume were observed after testosterone replacement therapy. However, serum PSA level did not change after testosterone replacement therapy. It would appear that serum PSA is not influenced by exogenous testosterone in patients with Klinefelter syndrome.
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Affiliation(s)
- T Shibasaki
- Department of Urology, Yamagata University School of Medicine, Yamagata-shi, Japan
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Tsutsumi K, Kotegawa T, Matsuki S, Tanaka Y, Ishii Y, Kodama Y, Kuranari M, Miyakawa I, Nakano S. The effect of pregnancy on cytochrome P4501A2, xanthine oxidase, and N-acetyltransferase activities in humans. Clin Pharmacol Ther 2001; 70:121-5. [PMID: 11503005 DOI: 10.1067/mcp.2001.116495] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Our objective was to evaluate the activity of cytochrome P4501A2 (CYP1A2), xanthine oxidase (XO), and N-acetyltransferase 2 (NAT2) from early to late pregnancy and after delivery. METHODS Twelve women were studied on three occasions during pregnancy (early, 8-16 weeks' gestation; middle, 20-28 weeks' gestation; and late, 32-39 weeks' gestation) and about 1 month after delivery. Caffeine was used as a metabolic probe. After the women ingested a can or a bottle of caffeine-containing soft drink, urine samples were collected for 12 hours. The caffeine metabolites measured were 5-acetylamino-6-amino-3-methyluracil (AAMU), 1-methylxanthine (1X), 1-methyl-uric acid (1U), 1,7-dimethyl-uric acid (17U), and 1,7-dimethylxanthine (17X). The hepatic enzyme activities were estimated by the urinary caffeine metabolic ratios as follows: CYP1A2 = (AAMU + 1X + 1U)/17U; XO = 1U/(1X + 1U); NAT2 = AAMU/(AAMU + 1X + 1U). RESULTS Statistically significant differences were found in CYP1A2 (P < .0001) and NAT2 (P < .01). The mean metabolic ratios for CYP1A2 during pregnancy (6.80, 5.18, and 4.97 for the early phase, middle phase, and late phase, respectively) were significantly lower than the ratio after delivery (10.39). The mean metabolic ratio for NAT2 in the early phase (0.57) was significantly lower than after delivery (0.66). There was no significant difference in metabolic ratios for XO during pregnancy and after delivery. CONCLUSION The data demonstrate that pregnancy influences CYP1A2 and NAT2 activity. CYP1A2 activity decreases not only in late pregnancy but also in early and middle pregnancy.
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Affiliation(s)
- K Tsutsumi
- Department of Clinical Pharmacology and Therapeutics, Clinical Pharmacology Center, Oita Medical University, Hasama-machi, Oita, Japan
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Kobayashi T, Sasagawa I, Suzuki Y, Yazawa H, Ichiyanagi O, Matsuki S, Nakada T. Sutureless vasovasostomy using new vascular closure staples in rats. Arch Androl 2001; 46:1-4. [PMID: 11204611 DOI: 10.1080/01485010150211083] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
To evaluate the efficacy of sutureless vasovasostomy using vascular closure staples, 20 male Sprague-Dawley rats were used for the study. In each rat, a sutureless vasovasostomy using vascular closure staples was performed on a randomly selected side, and a conventional end-to-end microsutured anastomosis was performed on the opposite side. Operation time was significantly shorter for sutureless vasovasostomy using vascular staples (p < .001). Four weeks after the surgery, however, patency rate and granuloma formation were not different for conventional end-to-end vasovasostomy vs. sutureless vasovasostomy. These findings suggest that sutureless vasovasostomy is simple to perform and requires fewer special technical skills. This procedure may provide an alternative to the conventional vasovasostomy.
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Affiliation(s)
- T Kobayashi
- Department of Urology, Yamagata University School of Medicine, Japan
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17
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Sasagawa I, Yazawa H, Suzuki Y, Tateno T, Ichiyanagi O, Kobayashi T, Matsuki S, Nakada T. Reevaluation of testicular biopsies of males with nonobstructive azoospermia in assisted reproductive technology. Arch Androl 2001; 46:79-83. [PMID: 11204622 DOI: 10.1080/01485010150211191] [Citation(s) in RCA: 7] [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: 10/17/2022]
Abstract
Spermatogenesis was investigated in seminiferous tubules of 100 males with nonobstructive azoospermia. Forty-four (44%) cases had Sertoli-cell-only syndrome, 23 (23%) had spermatogonium in the tubules, 17 (17%) had primary spermatocyte in the tubules, and 16 (16%) had round or late spermatid in the tubules. No cases showed secondary spermatocyte present in the tubules. The mean serum follicle-stimulating hormone (FSH) in males with nonobstructive azoospermia was significantly higher than that in males with obstructive azoospermia (p < .001). The mean concentrations of serum FSH in cases with Sertoli-cell-only syndrome and spermatogonium in the tubules were significantly higher than those in cases with primary spermatocyte and spermatid in the tubules (p < .05-.001). The results indicate that the evaluation of testicular histology using the type of germ cells present in seminiferous tubules is available for assisted reproductive technology.
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Affiliation(s)
- I Sasagawa
- Department of Urology, Yamagata University, School of Medicine, Japan.
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Abstract
A case of renal pelvic tumors occurring in a 44-year-old man is reported. There were two polypoid renal pelvic tumors which consisted of glandular and stromal components. Some glands in the tumors had ciliated epithelium and were quite similar to the epididymal tubules. Other glands in the tumors resembled the collecting duct or the mesonephric remnant seen in female genitalia. Immunohistochemistry and electron microscopy revealed smooth muscle differentiation of the stromal cells of these tumors. Some psammoma bodies were seen in the glands of the tumors. We diagnosed these tumors as adult mesoblastic nephroma (MN). The patient has been followed up for 14 months, showing no evidence of recurrence. Differentiation of the tumors from angiomyolipoma, leiomyoma, and nephrogenic adenofibroma is discussed. Adult renal tumors that consist of epithelial and stromal components have been reported under various names. They constitute clinicopathologically different entities originating from pediatric MN. We suggest that these tumors should be termed "adult MN".
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Affiliation(s)
- H Yanai
- Department of Pathology, Hiroshima City Hospital, Japan
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19
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Watanabe T, Inoue N, Kutsukake T, Matsuki S, Takeuchi M. Labeling conditions using a 2-aminobenzamide reagent for quantitative analysis of sialo-oligosaccharides. Biol Pharm Bull 2000; 23:269-73. [PMID: 10726877 DOI: 10.1248/bpb.23.269] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
During 2-aminobenzamide (2-AB)-labeling of sialo-oligosaccharides the authors encountered a significant loss of sialic acids under the reported conditions, at 65 degrees C for 2 h. By examination of the relationship between labeling temperature and recovery of tetra-sialylated oligosaccharides, 2-AB-labeling at 37 degrees C for 16 h resulted in a maximum yield with practically no loss of sialic acid. Under the newly optimized conditions, the reproducibility of 2-AB-labeling was examined in triplicate with three lots of recombinant human erythropoietin (r-HuEPO). The present conditions gave analytical data comparable to those obtained by the established NaB[3H]4 labeling procedure. The modified method has been applied to oligosaccharide structural analysis of sialoglycoprotein therapeutics.
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Affiliation(s)
- T Watanabe
- Chemistry and Quality Control Group, Pharmaceutical Development Laboratory, Kirin Brewery Co., Ltd., Takasaki, Gunma, Japan
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20
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Matsuki S, Sasagawa I, Suzuki Y, Yazawa H, Tateno T, Hashimoto T, Nakada T, Saito H, Hiroi M. The use of ebastine, a mast cell blocker, for treatment of oligozoospermia. Arch Androl 2000; 44:129-32. [PMID: 10746869 DOI: 10.1080/014850100262290] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
The effect of mast cell blocker (ebastine) on semen quality was evaluated in 15 idiopathic oligozoospermic males. Ten milligrams/day of ebastine was administered orally for 3 months. Nine cases (66.7%) showed definite improvement in the semen quality. The wives of 3 patients (20%) became pregnant within 6 months of the initial treatment. It would appear that mast cell blocker (ebastine) significantly improves semen quality in men with idiopathic oligozoospermia.
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Affiliation(s)
- S Matsuki
- Department of Urology, Yamagata University School of Medicine, Japan
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21
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Matsuki S, Kotegawa T, Tsutsumi K, Nakamura K, Nakano S. Pharmacokinetic changes of theophylline and amikacin through the menstrual cycle in healthy women. J Clin Pharmacol 1999; 39:1256-62. [PMID: 10586391 DOI: 10.1177/00912709922012060] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The objective of this open-label, single-dose study was to clarify the influence of the menstrual cycle on the pharmacokinetics of theophylline (n = 10) and amikacin (n = 8) in young healthy Japanese women with regular menstrual cycles. Each subject received an intravenous infusion of theophylline or amikacin sulfate at four different phases--mid-follicular (phase I), peri-ovulatory (phase II), mid-luteal (phase III), and premenstrual days (phase IV). In the theophylline study, there were no significant differences in the pharmacokinetic parameters among the four phases studied. In the amikacin study, CLtot was 15% higher in phase III than in phase I (p < 0.01). Vd beta was 35% higher in phase III than in phase I (p < 0.05). The other pharmacokinetic parameters of amikacin were not significantly altered during the menstrual cycle. Evidence suggests that the phase of the menstrual cycle may be a factor in determining the pharmacokinetics of amikacin.
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Affiliation(s)
- S Matsuki
- Department of Clinical Pharmacology and Therapeutics, Oita Medical University, Japan
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22
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Oyama H, Katayama T, Ikeda S, Matsuki S, Inoue S, Nakatsu M, Iizuka H, Shibuya M. [Ultrasonogram of carotid artery in endoarterectomy patients]. No To Shinkei 1999; 51:957-62. [PMID: 10586412] [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
Ultrasonograms of the carotid artery were compared with the intraoperative finding of atheroma plaque in terms of stenosis, fragility, ulceration and calcification. Soft type, intermediate type and these mixed type plaques were fragile plaques in almost all cases. All hard type plaques were tough plaques. The detection of stenosis and calcification was satisfactory, however that of ulceration was not sufficient. The stenotic lesions frequently existed in bilateral carotid arteries and the intima was easy to become thick even after the endoarterectomy. The ultrasonogram was thought to be the essential study for the carotid artery lesions.
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Affiliation(s)
- H Oyama
- Department of Neurosurgery, Chukyo Hospital, Nagoya, Japan
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23
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Matsuki S, Sasagawa I, Kakizaki H, Suzuki Y, Nakada T. Testicular teratoma in a man with XX/XXY mosaic Klinefelter's syndrome. J Urol 1999; 161:1573-4. [PMID: 10210407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- S Matsuki
- Department of Urology, Prefectural Nihonkai Hospital and Yamagata University School of Medicine, Japan
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24
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Meas S, Kabeya H, Yoshihara S, Ohashi K, Matsuki S, Mikami Y, Sugimoto C, Onuma M. Seroprevalence and field isolation of bovine immunodeficiency virus. J Vet Med Sci 1998; 60:1195-202. [PMID: 9853299 DOI: 10.1292/jvms.60.1195] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A seroprevalence study of bovine lentivirus, known as bovine immunodeficiency virus (BIV), was conducted in 12 different dairy herds in Hokkaido, where some herds were a high prevalence of bovine leukemia virus (BLV) infection. Amongst 611 cattle, 28.6% of cattle were BLV-seropositive, and 11.7% of cattle were seropositive for BIV, while 4.2% of cattle were seropositive for both BIV and BLV. For the isolation of BIV, 19 samples of peripheral blood mononuclear cells (PBMC) and one sample of milk-derived leukocytes were prepared from BIV-seropositive cows. These PBMC and leukocyte preparations were then co-cultivated with cc81 cells, a cat cell line transformed by mouse sarcoma virus. BIV was isolated from 17 PBMC and one milk-derived leukocyte samples. The isolated viruses showed slow replication and syncytia formation. Major core antigen, p26 from these isolates were reacted with anti-BIV (American isolate R-29) serum. In addition, proviral DNA was detected in blood and milk samples by nested polymerase chain reaction and subsequent Southern blot hybridization. Nucleotide sequence analysis of the amplified pol gene products showed its 99.0 to 99.7% homology to that of BIV R-29. These results indicate that the Japanese BIV isolates appear to be antigenically and genetically similar to the American R-29. Since BIV was isolated from milk samples, BIV could possibly be transmitted through milk. This is the first report of BIV isolation in Japan.
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MESH Headings
- Amino Acid Sequence
- Animals
- Antibodies, Viral/blood
- Base Sequence
- Blotting, Western/veterinary
- Cats
- Cattle
- Cattle Diseases/epidemiology
- Cell Line
- Cell Transformation, Viral
- Coculture Techniques/veterinary
- DNA, Viral/chemistry
- Enzootic Bovine Leukosis/epidemiology
- Fluorescent Antibody Technique/veterinary
- Immunodeficiency Virus, Bovine/genetics
- Immunodeficiency Virus, Bovine/immunology
- Immunodeficiency Virus, Bovine/isolation & purification
- Immunodeficiency Virus, Bovine/physiology
- Immunodiffusion/veterinary
- Lentivirus Infections/epidemiology
- Lentivirus Infections/veterinary
- Leukemia Virus, Bovine/isolation & purification
- Leukocytes, Mononuclear/virology
- Milk/virology
- Molecular Sequence Data
- Polymerase Chain Reaction/veterinary
- Sarcoma Viruses, Murine
- Seroepidemiologic Studies
- Viral Load
- Virus Replication
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Affiliation(s)
- S Meas
- Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Japan
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25
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Matsuki S, Sasagawa I, Kakizaki H, Itoh K, Nakada T. A boy with intrachromosomal triplication of the X chromosome. J Urol 1998; 160:1490-1. [PMID: 9751401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- S Matsuki
- Department of Urology, Prefectural Nihonkai Hospital and Yamagata University School of Medicine, Japan
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26
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Nagahata H, Matsuki S, Higuchi H, Inanami O, Kuwabara M, Kobayashi K. Bone marrow transplantation in a Holstein heifer with bovine leucocyte adhesion deficiency. Vet J 1998; 156:15-21. [PMID: 9691847 DOI: 10.1016/s1090-0233(98)80056-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bone marrow transplantation (BMT) was performed in a 9-month-old heifer with bovine leucocyte adhesion deficiency (BLAD). Clinical and haematological findings, selected neutrophil function and CD18 expression of neutrophils in a B2 integrin-deficient heifer were examined. Twelve months after BMT, a small fluorescent region in the CD18-positive area of a flow cytometric profile was demonstrated and estimated to represent 0.3-0.5% of the CD18-positive neutrophils as measured by flow cytometric analysis following immunomagnetic separation. The animal's clinical condition appeared to improve and stabilize over our observation period of 28 months following BMT. Newly expressed CD18 seemed to play an important role in ameliorating the clinical signs of BLAD in this heifer.
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Affiliation(s)
- H Nagahata
- Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University, Hokkaido, Japan
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27
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Nagahata H, Sakurai N, Matsuki S, Miura T, Nioka K, Kociba GJ. Survival of transfused CD18-positive granulocytes and their chemiluminescent response in a heifer with leukocyte adhesion deficiency. J Vet Med Sci 1998; 60:261-2. [PMID: 9524955 DOI: 10.1292/jvms.60.261] [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: 11/22/2022] Open
Abstract
Granulocyte transfusion (GT) was performed in an 8-month-old heifer with leukocyte adhesion deficiency (BLAD) to monitor the changes in transfused CD18-positive neutrophils and associated neutrophil chemiluminescent (CL) response in beta 2-integrin-deficient host. The CD18-positive neutrophils were detected in blood from the BLAD heifer during the first 3 hr after 2.6 x 10(9) cells were infused by GT, and disappeared by 5 hr after GT. The CL response of neutrophils was increased 1.7 to 2.8-fold in the BLAD heifer during the first 3 hr after GT, thereafter CL response decreased gradually from 2 to 5 hr after GT.
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Affiliation(s)
- H Nagahata
- Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido, Japan
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28
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Tanaka R, Oyama Y, Imajo S, Matsuki S, Ishiguro M. Structure-activity relationships of penem antibiotics: crystallographic structures and implications for their antimicrobial activities. Bioorg Med Chem 1997; 5:1389-99. [PMID: 9377099 DOI: 10.1016/s0968-0896(97)00073-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Twelve closely related crystal structures of the penem derivatives revealed a characteristic short contact of the oxygen atom in the C2 side-chains with the S1 atom. The side-chain conformations of the crystal structures showed a good correlation with the antimicrobial activity. In particular, the penems which show high antimicrobial activity have similar torsion angles for S1-C2-C1'-C2', suggesting that the disposition of the C2' atom would be important for binding to penicillin-interacting enzymes. Two conformations of the C6 hydroxyethyl group were observed in the crystal structures. Of those two, the conformation with a larger torsion angle (delta = 179.2 degrees) is deduced to be the enzyme-bound conformation in the Michaelis complex.
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Affiliation(s)
- R Tanaka
- Suntory Ltd, Institute for Biomedical Research, Shimamoto, Osaka, Japan
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29
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Ogawa I, Matsuki S, Yamamoto K. Interactions of cosmic axions with Rydberg atoms in resonant cavities via the Primakoff process. Phys Rev D Part Fields 1996; 53:R1740-R1744. [PMID: 10020222 DOI: 10.1103/physrevd.53.r1740] [Citation(s) in RCA: 3] [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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30
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Misaizu T, Matsuki S, Strickland TW, Takeuchi M, Kobata A, Takasaki S. Role of antennary structure of N-linked sugar chains in renal handling of recombinant human erythropoietin. Blood 1995; 86:4097-104. [PMID: 7492766] [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: 01/25/2023] Open
Abstract
To elucidate the role of the branched structure of sugar chains of human erythropoietin (EPO) in the expression of in vivo activity, the pharmacokinetic profile of a less active recombinant human EPO sample (EPO-bi) enriched with biantennary sugar chains was compared with that of a highly active control EPO sample enriched with tetraantennary sugar chains. After an intravenous injection in rats, 125I-EPO-bi disappeared from the plasma with 3.2 times greater total body clearance (Cltot) than control 125I-EPO. Whole-body autoradiography after 20 minutes of administration indicated that the overall distribution of radioactivity is similar, but 125I-EPO-bi showed a higher level of radioactivity in the kidneys than control 125I-EPO. Quantitative determination of radioactivity in the tissues also indicated that radioactivity of 125I-EPO-bi in the kidneys was two times higher than that of control 125I-EPO. The difference in plasma disappearance between 125I-EPO-bi and control 125I-EPO was not observed in bilaterally nephrectomized rats. The distribution of 125I-EPO-bi to bone marrow and spleen was similarly inhibited by simultaneous injection of excess amounts of either the nonlabeled EPO-bi or control EPO. These results indicate that the low in vivo biologic activity of EPO-bi results from rapid clearance from the systemic circulation by renal handling. Thus, the well-branched structure of the N-linked sugar chain of EPO is suggested to play an important role in maintaining its higher plasma level, which guarantees an effective transfer to target organs and stimulation of erythroid progenitor cells.
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Affiliation(s)
- T Misaizu
- Pharmaceutical Development Laboratory, Kirin Brewery, Gunma, Japan
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31
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Ichikawa T, Kuwaki T, Tachibana K, Yanagida M, Matsuki S. A highly sensitive enzyme immunoassay for G-CSF in human plasma. Exp Hematol 1995; 23:192-5. [PMID: 7533097] [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: 01/25/2023]
Abstract
We have developed a sensitive sandwich enzyme-linked immunosorbent assay (ELISA) to measure granulocyte colony-stimulating factor (G-CSF) in human plasma. This ELISA employs a combination of a mouse monoclonal antibody (MAb) as the first antibody and an affinity-purified sheep polyclonal antibody conjugated with beta-D-galactosidase as the second antibody. The coefficients of intra- and interassay variations were 2.2 to 3.6% and 8.3 to 10.2%, respectively. The assay had no cross-reactivity with four other human cytokines. Plasma G-CSF levels in healthy volunteers could easily be measured because the detection limit was 0.5 pg/mL. The mean plasma G-CSF concentration in 57 healthy volunteers (aged 19 to 47; 27 males and 30 females) was 10.5 +/- 4.5 pg/mL standard deviation [SD]). There was no statistically significant relationship between plasma G-CSF concentration and absolute neutrophil counts in those healthy volunteers (r = 0.259; p = 0.052).
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Affiliation(s)
- T Ichikawa
- Pharmaceutical Development Laboratory, Kirin Brewery Co., Ltd., Japan
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32
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Hayata T, Matsuki S, Miyakawa I. Histologic observations of the adenomyotic glandular epithelium after hormonal treatment for endometriosis. Int J Gynaecol Obstet 1994; 47:293-4. [PMID: 7705539 DOI: 10.1016/0020-7292(94)90579-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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33
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34
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Ishikawa M, Okada Y, Satake-Ishikawa R, Kakitani M, Kawagishi M, Matsuki S, Kusaka M, Asano K. Pharmacological effects of recombinant human granulocyte colony-stimulating factor modified by polyethylene glycol on anticancer drug-induced neutropenia in mice. Gen Pharmacol 1994; 25:533-7. [PMID: 7523237 DOI: 10.1016/0306-3623(94)90211-9] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
1. To clarify the pharmacological effects of recombinant human granulocyte colony-stimulating factor (rhG-CSF) conjugated to polyethylene glycol (PEG), its effects on the number of circulating neutrophils in mice made neutropenic by cyclophosphamide (CPA) or 5-fluorouracil (5-FU) were compared with rhG-CSF lacking PEG. 2. In normal mice, PEG-conjugated rhG-CSF (PEG-rhG-CSF, 10 micrograms protein/kg) induced an increase in neutrophils which lasted for 72 h after injection whereas the effect of rhG-CSF (10 micrograms protein/kg) disappeared by 24 h after injection. 3. In CPA or 5-FU-induced neutropenic mice, PEG-rhG-CSF inhibited neutropenia or accelerated recovery from neutropenia and its potency was higher than that of rhG-CSF. 4. These results indicate that PEG-rhG-CSF has a longer duration of action than rhG-CSF and is more effective in the recovery from neutropenia.
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Affiliation(s)
- M Ishikawa
- Pharmaceutical Research Laboratory, Kirin Brewery Co. Ltd., Gunma, Japan
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35
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Sunaoshi H, Fukashiro Y, Furukawa M, Yamauchi M, Hayashibe S, Shinozuka T, Fujioka M, Satoh I, Wada M, Matsuki S. A precision measurement of the hyperfine structure of87Sr+. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf00568145] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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36
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Satake-Ishikawa R, Ishikawa M, Okada Y, Kakitani M, Kawagishi M, Matsuki S, Asano K. Chemical modification of recombinant human granulocyte colony-stimulating factor by polyethylene glycol increases its biological activity in vivo. Cell Struct Funct 1992; 17:157-60. [PMID: 1379521 DOI: 10.1247/csf.17.157] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Recombinant human granulocyte colony-stimulating factor (rHuG-CSF) produced in Escherichia coli was chemically modified by polyethylene glycol (PEG) of molecular weights 4,500 or 10,000. The neutrophils observed at 32 hours after intravenous injection of the rHuG-CSF modified with PEG (4,500) or PEG (10,000) to mice were, respectively, 2.5 times and 5 times more than that observed after the injection of the unmodified rHuG-CSF. These results show that the covalent attachment of PEG to rHuG-CSF enhanced its pharmacological activity in vivo and that the modification with the larger PEG molecule is more effective to enhance the in vivo activity of rHuG-CSF.
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Kido Y, Nakano H, Harami T, Ishii K, Yamashita S, Shimomura K, Matsuki S. Lattice location and ionic state of Tm ions implanted into CaF2. Phys Rev B Condens Matter 1992; 45:4572-4578. [PMID: 10002087 DOI: 10.1103/physrevb.45.4572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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38
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Ishikawa M, Iijima H, Satake-Ishikawa R, Tsumura H, Iwamatsu A, Kadoya T, Shimada Y, Fukamachi H, Kobayashi K, Matsuki S. The substitution of cysteine 17 of recombinant human G-CSF with alanine greatly enhanced its stability. Cell Struct Funct 1992; 17:61-5. [PMID: 1375132 DOI: 10.1247/csf.17.61] [Citation(s) in RCA: 19] [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: 12/26/2022] Open
Abstract
Human recombinant granulocyte-colony stimulating factor (rhG-CSF) has one free cysteine at position 17 and has two disulfide bridges (Cys36-Cys42 and Cys64-Cys74). The Cys17 of rhG-CSF was substituted with Gly, Ala, Ser, Ile, Tyr, Arg, and Pro, or deleted using site-directed mutagenesis in order to improve its thermostability. With the exception of Pro17-rhG-CSF, all mutant proteins retained biological activity which promotes the growth of mouse bone marrow cells in vitro. Among these mutant proteins, Ala17-rhG-CSF had more than 5 times higher stability than rhG-CSF. But Ser17-rhG-CSF had almost same stability as rhG-CSF and other mutant proteins had only lower stability.
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Affiliation(s)
- M Ishikawa
- Pharmaceutical Laboratory, Kirin Brewery Co., Ltd., Gunma, Japan
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39
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Ishii K, Sugimoto M, Matsuki S, Matama S, Shibata H, Kusano S. Is necrosis induction therapy relevant to hepatocellular carcinoma? Prognostic evaluation viewed from necrosing feature in HCC occluding the main portal vein after treatment with DBcAMP and MMC. Am J Gastroenterol 1992; 87:118-23. [PMID: 1309405] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Intraarterial infusion therapy combining dibutyryl adenosine 3',5'-monophosphate and mitomycin C was administered to 27 patients with hepatocellular carcinoma (HCC) occluding the main portal vein. Twelve patients (44%) survived more than 6 months, among them nine (75%) whose tumors were non-necrosing before treatment. When patients were compared for the presence or absence of necrosis in the tumor, those with necrosis responded poorly to treatment; only 3 of 11 (27%) survived more than 6 months. Although the combination therapy exerted a salutary effect on HCC occluding the main portal vein, the presence of necrosis in the tumor was an unfavorable sign for the prognosis, which casts doubt upon the use of the necrosis-inducing method for the treatment of HCC.
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Affiliation(s)
- K Ishii
- Department of Internal Medicine, School of Medicine, Kitasato University, Sagamihara, Japan
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40
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Tanaka H, Satake-Ishikawa R, Ishikawa M, Matsuki S, Asano K. Pharmacokinetics of recombinant human granulocyte colony-stimulating factor conjugated to polyethylene glycol in rats. Cancer Res 1991; 51:3710-4. [PMID: 1712246] [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: 12/28/2022]
Abstract
The pharmacokinetics of recombinant human granulocyte colony-stimulating factor conjugated to polyethylene glycol (PEG-rhG-CSF) and rhG-CSF were studied in male Sprague-Dawley rats. The serum concentration after i.v. administration at a dose of 100 micrograms protein/kg was investigated by a bioassay. The serum rhG-CSF concentration decreased steadily after injection with a terminal half-life of 1.79 h. The PEG-rhG-CSF concentration after injection decreased much more slowly with a half-life of 7.05 h. The slower disappearance of PEG-rhG-CSF resulted in a greater area under the concentration-time curve. The neutrophil count after 100 micrograms of protein/kg of rhG-CSF administration reached a peak 12 h after injection and returned to the control level 48 h after injection. The neutrophil count after 100 micrograms of protein/kg of PEG-rhG-CSF administration was identical to that of rhG-CSF after 12 h but the highest level was maintained for 24 to 72 h after injection and returned to the control level after 168 h. These data indicated that PEG-rhG-CSF administration exerted a sustained biological effect on peripheral blood neutrophils. It is expected that PEG-rhG-CSF may contribute greatly to human G-CSF treatment because it has a prolonged neutrophil-proliferating activity enabling fewer administrations.
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Affiliation(s)
- H Tanaka
- Kirin Brewery Co., Ltd., Pharmaceutical Development Laboratory, Gunma, Japan
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41
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Abstract
We report guanine-specific recognition and selective cleavage of DNA by the antitumor antibiotic elsamicin A equipped with an amino sugar and compare these results with cleavage by chartarin and chartreusin antibiotics. The preferential cutting sites of DNA strand scission with elsamicin A are on the bases adjacent to the 3'-side of guanine residues such as 5'-GN sites, in particular 5'-GG sites. The present results also indicate that (1) the aglycon portion binds intercalatively to the 3'-side of guanine in host DNA, (2) the guanine 2-amino group has an important effect on selective DNA binding of elsamicin A, and (3) the amino sugar residue of elsamicin A facilitates the drug binding into the minor groove of B-DNA. In addition, we found that an acetylation of the amino group on the elsamicin A sugar portion plays an interesting switch function for the activity of elsamicin A. The biological implication of this switch has also been discussed.
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Affiliation(s)
- M Uesugi
- Institute for Chemical Research, Kyoto University, Japan
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42
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Watanabe M, Fukamachi H, Uzumaki H, Kabaya K, Tsumura H, Ishikawa M, Matsuki S, Kusaka M. Mutant protein of recombinant human granulocyte colony-stimulating factor for receptor binding assay. Anal Biochem 1991; 195:38-44. [PMID: 1716070 DOI: 10.1016/0003-2697(91)90291-z] [Citation(s) in RCA: 16] [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: 12/28/2022]
Abstract
A new mutant protein of recombinant human granulocyte colony-stimulating factor (rhG-CSF) was produced for the studies on receptors for human G-CSF. The mutant protein [(Tyr1, Tyr3]rhG-CSF), the biological activity of which was almost equal to that of rhG-CSF, was prepared by the replacement of threonine-1 and leucine-3 of rhG-CSF with tyrosine. The radioiodinated preparation of the mutant protein showed high specific radioactivity and retained full biological activity for at least 3 weeks. The binding capacity of the radioiodinated ligand was compared with that of [35S]rhG-CSF. Both radiolabeled ligands showed specific binding to murine bone marrow cells. Unlabeled rhG-CSF and human G-CSF purified from the culture supernatant of the human bladder carcinoma cell line 5637 equally competed for the binding of labeled rhG-CSFs in a dose-dependent manner, demonstrating that the sugar moiety of human G-CSF made no contribution to the binding of human G-CSF to target cells. In contrast, all other colony-stimulating factors and lymphokines examined did not affect the binding. Scatchard analysis of the specific binding of both labeled ligands revealed a single class of binding site with an apparent dissociation constant (Kd) of 20-30 pM and 100-200 maximal binding sites per cell. These data indicate that the radioiodinated preparation of the mutant protein binds the same specific receptor with the same affinity as [35S]rhG-CSF. The labeled mutant protein also showed specific binding to human circulating neutrophils.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- M Watanabe
- Pharmaceutical Research Laboratory, Kirin Brewery Company, Ltd., Gunma, Japan
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43
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Hanazono Y, Hosoi T, Kuwaki T, Matsuki S, Miyazono K, Miyagawa K, Takaku F. Structural analysis of the receptors for granulocyte colony-stimulating factor on neutrophils. Exp Hematol 1990; 18:1097-103. [PMID: 1698648] [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: 12/28/2022]
Abstract
We investigated granulocyte colony-stimulating factor (G-CSF) receptors on neutrophils from three patients with chronic myelogenous leukemia (CML) in the chronic phase, in comparison with four normal volunteers. Because we experienced some difficulties in radioiodinating intact recombinant human G-CSF, we developed a new derivative of human G-CSF termed YPY-G-CSF. It was easy to iodinate this protein using the lactoperoxidase method because of two additional tyrosine residues, and its radioactivity was higher than that previously reported. The biological activity of YPY-G-CSF as G-CSF was fully retained. Scatchard analysis demonstrated that CML neutrophils had a single class of binding sites (1400 +/- 685/cell) with a dissociation constant (Kd) of 245 +/- 66 pM. The number of sites and Kd value of CML neutrophils were not significantly different from those of normal neutrophils (p greater than 0.9). Cross-linking studies revealed two specifically labeled bands of [125I]YPY-G-CSF-receptor complexes with apparent molecular masses of 160 and 110 kd on both normal and CML neutrophils. This is the first report describing two receptor proteins on neutrophils. According to the analyses of the proteolytic process of these cross-linked complexes and proteolytic mapping, we assume that alternative splicing or processing from a single gene may generate two distinct receptor proteins that bind specifically to G-CSF but have different fates in intracellular metabolism.
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Affiliation(s)
- Y Hanazono
- Third Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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44
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Shimomura K, Uemura S, Kohmoto T, Fukuda Y, Ito S, Okano K, Muramoto T, Hashi T, Matsuki S. Nuclear polarization and magnetic resonance of unstable 170Tm with beta-ray radiation-detected optical pumping in solids. Phys Rev C Nucl Phys 1990; 42:R487-R490. [PMID: 9966782 DOI: 10.1103/physrevc.42.r487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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45
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Miyagawa K, Chiba S, Shibuya K, Piao YF, Matsuki S, Yokota J, Terada M, Miyazono K, Takaku F. Frequent expression of receptors for granulocyte-macrophage colony-stimulating factor on human nonhematopoietic tumor cell lines. J Cell Physiol 1990; 143:483-7. [PMID: 2162848 DOI: 10.1002/jcp.1041430312] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Receptors for granulocyte-macrophage colony-stimulating factor (GM-CSF) were identified on 9 of 35 (26%) human nonhematopoietic tumor cell lines including non-small cell lung cancer, stomach cancer, colon cancer, and osteosarcoma cells. GM-CSF receptors distributed on these human tumor cells were low affinity types with an equilibrium dissociation constant of 1.5-10.0 nM. Cross-linking studies revealed that the molecular weights of the low affinity GM-CSF receptors were 65-85 kilodaltons. The high affinity receptors identified on hematopoietic cells were not detected on human nonhematopoietic tumor cells which we studied, and we could detect no effects of GM-CSF on cell growth of these tumor cells.
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MESH Headings
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/pathology
- Carcinoma, Non-Small-Cell Lung/ultrastructure
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Colonic Neoplasms/metabolism
- Colonic Neoplasms/pathology
- Colonic Neoplasms/ultrastructure
- Gene Expression/physiology
- Humans
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Lung Neoplasms/ultrastructure
- Osteosarcoma/metabolism
- Osteosarcoma/pathology
- Osteosarcoma/ultrastructure
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Cell Surface/physiology
- Receptors, Colony-Stimulating Factor
- Stomach Neoplasms/metabolism
- Stomach Neoplasms/pathology
- Stomach Neoplasms/ultrastructure
- Tumor Cells, Cultured/metabolism
- Tumor Cells, Cultured/pathology
- Tumor Cells, Cultured/ultrastructure
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Affiliation(s)
- K Miyagawa
- Third Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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46
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Matsuki S, Ozawa T, Nagao S, Hirata H, Kanoh H, Nozawa Y. High-level expression of complementary DNA encoding rat calmodulin in Escherichia coli. Biotechnol Appl Biochem 1990; 12:284-91. [PMID: 2193655] [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: 12/30/2022]
Abstract
We report the production and characterization of a rat calmodulin made in Escherichia coli. To express the rat calmodulin cDNA in E. coli, we have employed an expression vector containing the E. coli trp promoter and trpA terminator. The cDNA was modified so as to delete the 5' nontranslated sequence and to incorporate a consensus sequence for the E. coli ribosome-binding site. Several codons for the N-terminal amino acids were selected to fit the E. coli consensus nucleotide sequence around the translational initiation codon. After induction of expression in E. coli, rat calmodulin accounted for over 30% of total cellular proteins. About 100 mg of recombinant rat calmodulin, purified to over 90% homogeneity by extraction from bacterial lysate followed by phenyl-Sepharose column chromatography, was obtained from 1 liter of E. coli culture. This recombinant calmodulin activated rat brain cyclic AMP phosphodiesterase to the same extent as the native calmodulin purified from rat brain. These results indicate that the overproduction system of the recombinant calmodulin in E. coli facilitates the study of the structure-function relationship by site-specific mutagenesis.
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Affiliation(s)
- S Matsuki
- Kirin Brewery Company, Ltd., Pharmaceutical Laboratory, Gunma, Japan
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47
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Nagao S, Matsuki S, Kanoh H, Ozawa T, Yamada K, Nozawa Y. Site-directed mutagenesis of glutamine residue of calmodulin. Activation of guanylate cyclase of Tetrahymena plasma membrane. J Biol Chem 1990; 265:5926-9. [PMID: 1969409] [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: 12/29/2022] Open
Abstract
Tetrahymena calmodulin (CaM) differs from mammalian CaM in its ability to activate Tetrahymena guanylate cyclase. Of 12 differences in amino acid sequence, two occur near the carboxyl terminus (Gln-143----Arg and Thr-146----deletion). To investigate the functional significance of the carboxyl-terminal region in activation of the guanylate cyclase, three mutated CaMs were engineered by using cassette mutagenesis of rat CaM cDNA: Gln-143----Arg (CaM.A), Thr-146----deletion (CaM.D), and Gln-143----Arg/Thr-146 deletion (CaM.AD). Recombinant wild type CaM (wCaM), CaM.A, CaM.D, and CaM.AD were indistinguishable in their ability to activate cyclic AMP phosphodiesterase. The two mutated CaMs (CaM.A and CaM.AD) with the Gln-143 replacement activated guanylate cyclase of Tetrahymena plasma membrane in the presence of Ca2+, with the maximal activation being half of that produced by Tetrahymena CaM. In contrast, neither CaM.D nor wCaM could stimulate the cyclase activity. A CaM antagonist, W-7 (N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide), prevented the cyclase activation by either Tetrahymena CaM, CaM.A, or CaM.AD. Thus, we conclude that Arg-143 is in a region of the molecule involved in activation of Tetrahymena guanylate cyclase. The data also suggest that the cyclase activation by Tetrahymena CaM requires complex macromolecular interactions between the entire CaM molecule and the enzyme.
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Affiliation(s)
- S Nagao
- Department of Biochemistry, Gifu University School of Medicine, Japan
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48
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Nagao S, Matsuki S, Kanoh H, Ozawa T, Yamada K, Nozawa Y. Site-directed mutagenesis of glutamine residue of calmodulin. Activation of guanylate cyclase of Tetrahymena plasma membrane. J Biol Chem 1990. [DOI: 10.1016/s0021-9258(19)39266-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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49
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Chiba S, Shibuya K, Piao YF, Tojo A, Sasaki N, Matsuki S, Miyagawa K, Miyazono K, Takaku F. Identification and cellular distribution of distinct proteins forming human GM-CSF receptor. Cell Regul 1990; 1:327-35. [PMID: 2151610 PMCID: PMC361485 DOI: 10.1091/mbc.1.4.327] [Citation(s) in RCA: 39] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Two proteins forming the receptor for human granulocyte-macrophage colony-stimulating factor (GM-CSF)1 were identified and characterized. One with apparent Mr of about 80,000 was defined as alpha-chain and has Kd of 0.7-2.8 nM. The other binding molecule with apparent Mr of about 135,000 was defined as beta-chain and is related to the high-affinity binding with Kd of 10-40 pM. The binding kinetic studies confirmed that the 125I-GM-CSF associated slower to and dissociated more rapidly from the alpha-chain than the beta-chain. The alpha-chain is expressed not only on hemopoietic cells but also on full-term placental tissues, choriocarcinoma cells, and other solid tumor cells. In contrast, the distribution of the beta-chain is restricted on hemopoietic cells. The alpha-chain probably corresponds to the low-affinity GM-CSF receptor whose cDNA has been cloned and sequenced.
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Affiliation(s)
- S Chiba
- Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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50
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Hatachi K, Shigeta M, Kokehara O, Matsuki S, Fukushima M, Kadena H. [Combination chemotherapy of M-VAC (methotrexate, vinblastine, adriamycin and cisplatin) for advanced uroepithelial cancer]. Nihon Hinyokika Gakkai Zasshi 1990; 81:433-8. [PMID: 2359221 DOI: 10.5980/jpnjurol1989.81.433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 12/31/2022]
Abstract
Seventeen patients with advanced uroepithelial cancer were treated with M-VAC regimen. Out of 17 patients, 10 were evaluable but 7 were not. Evaluable 10 patients comprised 7 males and 3 females ranging in age from 50 to 83 (median 69.5). The number of performed cycle ranged from 1 to 3 and the performance status was from 0 to 2. Complete response (CR) was observed in 2, partial response (PR) in 4 and no change (NC) in 4 out of 10 patients. The efficacy rate was 60%. Every site of the tumor responded well and CR was observed, in particular, in nodal and pulmonary metastasis. One of 2 CR patients relapsed and died. One of 4 PR patients died of cancer, 2 are alive with regrowing tumors and the other is alive without disease after surgical removal of all residual tumors. The same regimen was carried out again to 2 patients with regrowing tumors, but no response was observed. As to drug toxicity in total 31 cycles (17 patients), gastrointestinal disturbances, anorexia and alopecia were reversible but hematological toxicity was serious and 3 of 17 (17.6%) died of severe bone marrow suppression. M-VAC is an effective regimen for advanced uroepithelial cancer, but bone marrow suppression was serious. Therefore, special attention should be paid to myelosuppression.
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Affiliation(s)
- K Hatachi
- Department of Urology, Fukuyama National Hospital
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