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Munthali C, Kinoshita R, Onishi K, Rakotondrafara A, Mikami K, Koike M, Tani M, Palta J, Aiuchi D. A Model Nutrition Control System in Potato Tissue Culture and Its Influence on Plant Elemental Composition. Plants (Basel) 2022; 11:2718. [PMID: 36297742 PMCID: PMC9611602 DOI: 10.3390/plants11202718] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Low or excessive soil fertility is a major constraint to potato production. The influence of each individual nutrient element on potato plants under field studies remains ambiguous due to the influence of environmental variations. Creating an in vitro model plant with deficient or excessive nutrient content will provide a more controlled study and allow for a better understanding of how the concentration of one element can affect the uptake of other elements. Here we designed a tissue culture-based nutrition control system to systematically analyze the effects of essential nutrients on potato plants. Insufficient or excessive nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) contents were created by modifying the Murashige and Skoog (MS) medium. Deficient to toxic plant nutrient statuses were successfully defined by the evaluation of dry biomass and morphological symptoms. The results showed that plant shoot growth, nutrient uptake and content, and nutrient interactions were all significantly impacted by the changes in the MS media nutrient concentrations. These tissue culture systems can be successfully used for further investigations of nutrient effects on potato production in response to biotic and abiotic stresses in vitro.
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Affiliation(s)
- Chandiona Munthali
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Rintaro Kinoshita
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Kazumitsu Onishi
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Aurelie Rakotondrafara
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA
| | - Kakeru Mikami
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Masanori Koike
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Masayuki Tani
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
| | - Jiwan Palta
- Department of Horticulture, University of Wisconsin-Madison, 490 Moore Hall, 1575 Linden Drive, Madison, WI 53706, USA
| | - Daigo Aiuchi
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Hokkaido, Japan
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Mikami K, Tadano K. High-performance finger module for robot hands with pneumatic cylinder and parallel link mechanism. Adv Robot 2021. [DOI: 10.1080/01691864.2021.1993333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- K. Mikami
- Institute of Innovative research, Tokyo Institute of Technology, Tokyo, Japan
| | - K. Tadano
- School of Engineering, Tokyo Institute of Technology, Tokyo, Japan
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Kobayashi K, Okuno N, Arai G, Nakatsu H, Maniwa A, Kamiya N, Satoh T, Kikukawa H, Nasu Y, Uemura H, Nakashima T, Mikami K, Iinuma M, Tanabe K, Furukawa J, Kobayashi H. Efficacy and safety of abiraterone acetate plus prednisolone in patients with early metastatic castration-resistant prostate cancer who failed first-line androgen-deprivation therapy: a single-arm, phase 4 study. Jpn J Clin Oncol 2021; 51:544-551. [PMID: 33324967 PMCID: PMC8012350 DOI: 10.1093/jjco/hyaa225] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/27/2020] [Indexed: 12/24/2022] Open
Abstract
Aim The aim was to evaluate the efficacy and safety of abiraterone acetate plus prednisolone in patients with chemotherapy-naïve early metastatic castration-resistant prostate cancer who failed first-line androgen deprivation therapy. Methods Patients with early metastatic castration-resistant prostate cancer with confirmed prostate-specific antigen progression within 1-year or prostate-specific antigen progression without having normal prostate-specific antigen level (<4.0 ng/mL) during first-line androgen deprivation therapy were enrolled and administered abiraterone acetate (1000 mg) plus prednisolone (10 mg). A minimum of 48 patients were required according to Simon’s minimax design. The primary endpoint was prostate-specific antigen response rate (≥50% prostate-specific antigen decline by 12 weeks), secondary endpoints included prostate-specific antigen progression-free survival and overall survival. Safety parameters were also assessed. Results For efficacy, 49/50 patients were evaluable. Median age was 73 (range: 55–86) years. The median duration of initial androgen deprivation therapy was 32.4 (range: 13.4–84.1) weeks and 48 patients experienced prostate-specific antigen progression within 1-year after initiation of androgen deprivation therapy. prostate-specific antigen response rate was 55.1% (95% confidence interval: 40.2%–69.3%), median prostate-specific antigen–progression-free survival was 24.1 weeks, and median overall survival was 102.9 weeks (95% confidence interval: 64.86 not estimable [NE]). Most common adverse event was nasopharyngitis (15/50 patients, 30.0%). The most common ≥grade 3 adverse event was alanine aminotransferase increased (6/50 patients, 12.0%). Conclusions Abiraterone acetate plus prednisolone demonstrated a high prostate-specific antigen response rate of 55.1%, suggesting tumor growth still depends on androgen synthesis in patients with early metastatic castration-resistant prostate cancer. However, prostate-specific antigen–progression-free survival was shorter than that reported in previous studies. Considering the benefit–risk profile, abiraterone acetate plus prednisolone would be a beneficial treatment option for patients with chemotherapy-naive metastatic prostate cancer who show early castration resistance.
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Affiliation(s)
- K Kobayashi
- Department of Urology, Federation of National Public Service Personnel Mutual Aid Associations Yokosuka Kyosai Hospital, Kanagawa, Japan
| | - N Okuno
- Department of Urology, Independent Administrative Institution National Hospital Organization Sagamihara Hospital, Kanagawa, Japan
| | - G Arai
- Department of Urology, Dokkyo Medical University Saitama Medical Center, Saitama, Japan
| | - H Nakatsu
- Department of Urology, Asahi General Hospital, Chiba, Japan
| | - A Maniwa
- Department of Urology, Independent Administrative Institution National Hospital Organization Shizuoka Medical Center, Shizuoka, Japan
| | - N Kamiya
- Department of Urology, Toho University Sakura Medical Center, Chiba, Japan
| | - T Satoh
- Department of Urology, Kitasato University School of Medicine, Kanagawa, Japan
| | - H Kikukawa
- Department of Urology, Independent Administrative Institution National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan
| | - Y Nasu
- Department of Urology, Japan Organization of Occupational Health and Safety Okayama Rosai Hospital, Okayama, Japan
| | - H Uemura
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Kanagawa, Japan
| | - T Nakashima
- Department of Urology, Ishikawa Prefectural Central Hospital, Ishikawa, Japan
| | - K Mikami
- Department of Urology, Chibaken Saiseikai Narashino Hospital, Chiba, Japan
| | - M Iinuma
- Department of Urology, Independent Administrative Institution National Hospital Organization Mito Medical Center, Ibaraki, Japan
| | - K Tanabe
- Department of Urology, Tokyo Women's Medical University Hospital, Tokyo, Japan
| | - J Furukawa
- Department of Urology, National University Corporation Kobe University Hospital, Hyogo, Japan
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Babujee L, Witherell RA, Mikami K, Aiuchi D, Charkowski AO, Rakotondrafara AM. Optimization of an isothermal recombinase polymerase amplification method for real-time detection of Potato virus Y O and N types in potato. J Virol Methods 2019; 267:16-21. [PMID: 30796947 DOI: 10.1016/j.jviromet.2019.02.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 02/18/2019] [Accepted: 02/19/2019] [Indexed: 11/16/2022]
Abstract
Potato virus Y (PVY) is a global challenge for potato production and the leading cause of seed crop downgrading and rejection for certification. Accurate and timely diagnosis is key to effective control of PVY. Here we optimized the isothermal recombinase polymerase amplification (RPA) for accurate detection of different PVY O and N types that were tested, present in different tissues of potato plants including tubers with a primer set that specifically targets the highly conserved pipo region within the viral genome. Combined with a simplified preparation of the template by tissue homogenization, we established a rapid RPA procedure, which can allow real time detection in less than 10 min with a fluorescent probe. Specificity of the reaction was determined by the lack of cross-reactivity with other common potato viruses. Although RPA reagents remain more expensive than PCR reagents, RPA technology is equivalent in that results can be visualized by gel electrophoresis or with a fluorescent probe with greater sensitivity; and it is superior to the common PCR-based assay in its versatility, speed, and lack of need for a highly purified RNA template.
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Affiliation(s)
- Lavanya Babujee
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, 53706, USA
| | - Robert A Witherell
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, 53706, USA
| | - Kakeru Mikami
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Inada-cho, Obihiro, 0808555, Japan
| | - Daigo Aiuchi
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Inada-cho, Obihiro, 0808555, Japan
| | - Amy O Charkowski
- Bioagricultural Sciences and Pest Management, C129 Plant Science Building, 307 University Avenue, Colorado State University, Fort Collins, CO, 80523, USA
| | - Aurélie M Rakotondrafara
- Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Drive, Madison, WI, 53706, USA.
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Kanemura S, Kuribayashi K, Fujimoto E, Negi Y, Koda Y, Mikami K, Minami T, Yokoi T, Kijima T. Clinical utility of 18F-FDG PET for chemotherapy response evaluation in patients with malignant pleural mesothelioma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx677.001] [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: 11/13/2022] Open
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Fujimoto E, Kuribayashi K, Kanemura S, Negi Y, Koda Y, Mikami K, Minami T, Yokoi T, Nakano T, Kijima T. First-line chemotherapy with pemetrexed plus cisplatin for malignant peritoneal mesothelioma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx668.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mikami K, Shiraishi M, Kamo T. Subjective vertical position allows prediction of one year later forward flexion of trunk in Parkinson’s disease patient. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kawasaki T, Mikami K, Kamo T. Motor prediction is associated with activities of daily living in patients with Parkinson’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1023] [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: 12/01/2022]
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Kamiya N, Suzuki H, Suyama T, Kobayashi M, Fukasawa S, Sekita N, Mikami K, Nihei N, Naya Y, Ichikawa T. 275P Clinical outcomes of second transurethral resection in non-muscle invasive high grade bladder cancer: a retrospective, multi-institutional, collaborative study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw583.001] [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: 11/13/2022] Open
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Shingo K, Kuribayashi K, Fujimoto E, Koda Y, Negi Y, Shibata E, Otsuki T, Mikami K, Nakano T. 273P Cisplatin in combination with pemetrexed in the treatment of patients for advanced malignant peritoneal mesothelioma: Retrospective study of 21 cases. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw582.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mikami K, Medová M, Nisa L, Francica P, Glück AA, Tschan MP, Blaukat A, Bladt F, Aebersold DM, Zimmer Y. Impact of p53 Status on Radiosensitization of Tumor Cells by MET Inhibition-Associated Checkpoint Abrogation. Mol Cancer Res 2015; 13:1544-53. [PMID: 26358474 DOI: 10.1158/1541-7786.mcr-15-0022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 08/24/2015] [Indexed: 11/16/2022]
Abstract
UNLABELLED Signaling via the MET receptor tyrosine kinase has been implicated in crosstalk with cellular responses to DNA damage. Our group previously demonstrated that MET inhibition in tumor cells with deregulated MET activity results in radiosensitization via downregulation of the ATR-CHK1-CDC25 pathway, a major signaling cascade responsible for intra-S and G2-M cell-cycle arrest following DNA damage. Here we aimed at studying the potential therapeutic application of ionizing radiation in combination with a MET inhibitor, EMD-1214063, in p53-deficient cancer cells that harbor impaired G1-S checkpoint regulation upon DNA damage. We hypothesized that upon MET inhibition, p53-deficient cells would bypass both G1-S and G2-M checkpoints, promoting premature mitotic entry with substantial DNA lesions and cell death in a greater extent than p53-proficient cells. Our data suggest that p53-deficient cells are more susceptible to EMD-1214063 and combined treatment with irradiation than wild-type p53 lines as inferred from elevated γH2AX expression and increased cytotoxicity. Furthermore, cell-cycle distribution profiling indicates constantly lower G1 and higher G2-M population as well as higher expression of a mitotic marker p-histone H3 following the dual treatment in p53 knockdown isogenic variant, compared with the parental counterpart. IMPLICATIONS The concept of MET inhibition-mediated radiosensitization enhanced by p53 deficiency is of high clinical relevance, as p53 is frequently mutated in numerous types of human cancer. The current data point for a therapeutic advantage for an approach combining MET targeting along with DNA-damaging agents for MET-positive/p53-negative tumors.
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Affiliation(s)
- K Mikami
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - M Medová
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - L Nisa
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - P Francica
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - A A Glück
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - M P Tschan
- Experimental Pathology, Institute of Pathology, University of Bern, Bern, Switzerland
| | - A Blaukat
- Merck Serono Research & Development, Merck KGaA, Darmstadt, Germany
| | - F Bladt
- Merck Serono Research & Development, Merck KGaA, Darmstadt, Germany
| | - D M Aebersold
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Y Zimmer
- Department of Radiation Oncology, Inselspital, Bern University Hospital and University of Bern, Bern, Switzerland. Department of Clinical Research, University of Bern, Bern, Switzerland.
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Sirilun S, Takahashi H, Boonyaritichaikij S, Chaiyasut C, Lertruangpanya P, Koga Y, Mikami K. Impact of maternal bifidobacteria and the mode of delivery on Bifidobacterium microbiota in infants. Benef Microbes 2015; 6:767-74. [PMID: 26322546 DOI: 10.3920/bm2014.0124] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The aim of this study is to examine the influence of maternal intestinal and vaginal bifidobacteria on the colonisation of bifidobacteria in the gut of infants. Faecal samples from 120 healthy pregnant mothers within 1 month of delivery and from their infants at 1 month of age and 98 vaginal swabs from the mothers at the time of delivery were collected at a maternity hospital in Chiang Mai, Thailand. The faecal and vaginal samples were assayed by real-time PCR assays to detect Bifidobacterium species and to estimate the bifidobacterial copy numbers. After adjusting for the numbers of each Bifidobacterium species, delivery mode, and antibiotic use in infants by the age of 1 month, total counts of bifidobacteria in the mothers' faeces were associated with increased copy numbers of bifidobacteria in the faeces of breastfed infants. A caesarean section was also significantly associated with a decrease in the copy numbers of bifidobacteria in the faeces of infants. No significant correlation was found between the bifidobacterial copies of the vaginal swabs and those of the infants' faeces. The intestinal bifidobacterial status of exclusively breastfed infants was significantly positive affected by vaginal delivery and high bifidobacterial copy numbers in their mothers' gut.
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Affiliation(s)
- S Sirilun
- 1 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - H Takahashi
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - S Boonyaritichaikij
- 3 Department of Family Medicine, Faculty of Medicine, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - C Chaiyasut
- 1 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Suthep road, Suthep, Muang, 50200 Chiang Mai, Thailand
| | - P Lertruangpanya
- 4 Chiang Mai Health Promotion Hospital, Health Center Region 10th, Prachasamphan road, Changklan, Muang, 50100 Chiang Mai, Thailand
| | - Y Koga
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - K Mikami
- 2 Laboratory for Infectious Diseases, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.,5 Department of Psychiatry, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
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Mikami K. C-arm cone beam computed tomography with fluoroscopic overlay for needle guidance during percutaneous drainage of abnormal fluid collections undetectable by ultrasound. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.516] [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: 11/16/2022] Open
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Nishino R, Mikami K, Takahashi H, Tomonaga S, Furuse M, Hiramoto T, Aiba Y, Koga Y, Sudo N. Commensal microbiota modulate murine behaviors in a strictly contamination-free environment confirmed by culture-based methods. Neurogastroenterol Motil 2013; 25:521-8. [PMID: 23480302 DOI: 10.1111/nmo.12110] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 02/05/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND There is increasing evidence suggesting the existence of an interaction between commensal microbiota, the gut and the brain. The aim of this study was to examine the influence of commensal microbiota on the host behaviors in a contamination-free environment, which was verified by culture-based methods. METHODS Open-field and marble-burying tests were used to analyze anxiety-like behaviors and locomotor activity in gnotobiotic BALB/c mice with a common genetic background in a sterile isolator. The monoamine levels in several regions of the brain were measured in germfree (GF) mice and commensal fecal microbiota-associated mice (EX-GF). KEY RESULTS A 24-h exposure to the environment outside the sterile isolators rendered GF mice less anxious than those not contaminated, while there was no change in the locomotion. EX-GF mice, the gnotobiotic mice with normal specific pathogen-free microbiota, were less anxious and active than GF mice using open-field and marble-burying tests. The norepinephrine, dopamine, and serotonin turnover rates were higher in the EX-GF mice than in the GF mice in most regions of the brain, suggesting that monoaminergic neurotransmission might increase in the EX-GF mice comparing the GF mice. Monoassociation with Brautia coccoides reduced the anxiety level, but it did not affect the locomotor activity. In contrast, colonization with Bifidobacterium infantis decreased the locomotor activity, while having little effect on the anxiety level. CONCLUSIONS & INFERENCES These results strongly support the current view that gut microorganisms modulate brain development and behavior.
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Affiliation(s)
- R Nishino
- Laboratory for Infectious Diseases, Isehara, Kanagawa, Japan.
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Nakamura T, Mikami K, Kimura Y, Ueda T, Hongo F, Nonomura N, Miki T. Management of Advanced Testicular Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32242-0] [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: 11/15/2022] Open
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16
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Nakano T, Tamura K, Otsuki T, Ohkuwa H, Kamiya H, Masachika E, Honda M, Mikami K, Nogi Y, Maeda R, Tabata C, Fukuoka K. Histone deacetylase activity in peripheral blood of patients with malignant pleural mesothelioma. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Nakamura T, Kimura Y, Mikami K, Hongo F, Shiraishi T, Takaha N, Miki T. Salvage chemotherapy with paclitaxel, gemcitabine, and nedaplatin (TGN) for cisplatin refractory heavily treated germ cell tumors. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Hongo F, Mikami K, Nakanouchi T, Naya Y, Itoh Y, Nakamura T, Takaha N, Miki T. Intra-arterial chemotherapy for local invasive bladder cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Hongo F, Takaha N, Kimura Y, Nakamura T, Mikami K, Nakayama S, Matsushima T, Ishihara H, Sakai T, Miki T. Use of CDK1 and CDK2 activity to predict renal cell cancer recurrence. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.7_suppl.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
341 Background: We established original methods enabling simultaneous analysis of protein expressions and kinase activities of the CDK (cyclin-dependent kinase) molecules in lysate of tumor tissue in a clinical setting (C2P technology, Ishihara et al: Biochim Biophys Acta. 1741; 226-233, 2005). The clinical utility of the technology was first evaluated in breast cancer, and combination analysis of CDK1 and CDK2 activity was shown to be a significant prognostic indicator for relapse (Kim et al. Ann Oncol. 19;68-72,2009). The objective of our study is to evaluate the efficacy of CDK1 and CDK2 activity as a prognostic marker in human renal cell carcinoma (RCC). Methods: Surgical specimens were obtained from 115 patients with RCC without metastasis. These patients were selected randomly for this study. Protein expression and kinase activity of CDKs and cyclins were analyzed using a newly developed assay system. The system to measure the CDK specific activity (SA) is named C2Ps (Sysmex, Kobe, Japan). We then examined the specific activities of CDK1 and CDK2 and calculated CDK2/CDK1 ratio in RCC. Also, risk score (RS) was examined as described in previous study (JGH van Nes et al: Br J Cancer. 100; 494-500, 2009). Cut off value was calculated by ROC analysis. Results: 115 cases were tested, though 32 cases were excluded of low sample quality (30 cases) and of assay failure (2 cases). 83 cases were analyzed. They included 63 male and 20 female patients, ranging in age from 19 to 83 years. At a median follow up of 33 months (1-109M), tumor with low CDK2/CDK1 ratio showed significantly better 5-year progression-free survival (PFS) than those with high CDK2/CDK1 ratio (91.2% vs. 51.6%, p=0.0016). Also, RS enabled the classification of RCCs into high-risk and low-risk groups, patients with tumors classified as low RS showed better PFS than patients with tumors with high RS (88.9% vs. 63.9%, p=0.0488). Conclusions: CDK1 specific activity of tumors and the CDK2 specific activity are both associated with recurrence and prognosis. Analysis of cyclin-dependent kinase activity in the clinical setting could be a powerful approach for predicting cancer recurrence and prognosis in RCC after surgery and has potential for use as a routine laboratory test. No significant financial relationships to disclose.
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Affiliation(s)
- F. Hongo
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N. Takaha
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y. Kimura
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Nakamura
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Mikami
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - S. Nakayama
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Matsushima
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - H. Ishihara
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Sakai
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Miki
- Department of Urology, Kyoto Prefectural University of Medicine, Kyoto, Japan; Central Research Laboratories, Sysmex Corporation, Kobe, Japan; Department of Molecular Targeting Cancer Prevention, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Hongo F, Takaha N, Kimura Y, Nakamura T, Mikami K, Nakayama S, Shibayama M, Ishihara H, Sakai T, Miki T. Use of CDK1 and CDK2 activity to predict renal cell cancer recurrence. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Mikami K, Ozasa K, Nakao M, Miki T, Hayashi K, Watanabe Y, Mori M, Sakauchi F, Washio M, Kubo T, Ito Y, Suzuki K, Wakai K, Tamakoshi A. UP-1.089: Prostate Cancer Risk in Relation to Serum Insulin-Like Growth Factor (IGF)-I and IGF-Binding Protein-3: A Nested Case-Control Study in Japan. Urology 2009. [DOI: 10.1016/j.urology.2009.07.536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kawamura K, Suzuki H, Utsumi T, Kamiya N, Imamoto T, Yano M, Nakatsu H, Ueda T, Mikami K, Ichikawa T. UP-1.108: Development of a New Nomogram for Predicting the Probability of a Positive Initial Prostate Biopsy in Japanese Patients with Serum PSA Levels Less Than 10 ng/ml. Urology 2009. [DOI: 10.1016/j.urology.2009.07.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nakamura T, Kawauchi A, Mikami K, Yamagami T, Ukimura O, Takaha N, Nishimura T, Miki T. MP-05.01: Radio-Frequency Ablation (RFA) for Post-Chemotherapeutic Metastatic Germ Cell Tumors as Minimally Invasive Salvage Therapy. Urology 2009. [DOI: 10.1016/j.urology.2009.07.1004] [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: 10/20/2022]
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Hongo F, Nakanouchi T, Naya Y, Itoh Y, Nakamura T, Mikami K, Takaha N, Miki T. UP-3.026: Bladder Preservation Therapy for the Treatment of Patients with Local Invasive Bladder Cancer. Urology 2009. [DOI: 10.1016/j.urology.2009.07.029] [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: 11/16/2022]
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Shibata R, Kimura M, Takahashi H, Mikami K, Aiba Y, Takeda H, Koga Y. Clinical effects of kestose, a prebiotic oligosaccharide, on the treatment of atopic dermatitis in infants. Clin Exp Allergy 2009; 39:1397-403. [PMID: 19508323 DOI: 10.1111/j.1365-2222.2009.03295.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nakamura T, Nonomura N, Mikami K, Shiraishi T, Takaha N, Okuyama A, Miki T. Salvage chemotherapy with irinotecan and nedaplatin for cisplatin refractory germ cell tumors. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e16022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e16022 Background: Only 20 - 30 % of patients with cisplatin (CDDP) refractory germ cell tumor (GCT) will remain continuously disease-free with salvage chemotherapy. The present study investigated the combination chemotherapy with irinotecan (Ir) and nedaplatin (CDGP), the second generation derivative of CDDP developed in Japan, as salvage chemotherapy for CDDP-refractory GCT. Methods: Between June 1998 and December 2007, 39 CDDP refractory GCT patients treated with irinotecan and CDGP (IrN therapy) were assessed retrospectively. IrN therapy consisted of Ir: 100–150 mg/m2 on day 1, 15 or 200–300 mg/m2 on day 2, CDGP: 100 mg/m2 on day 1 every four weeks with oral administration of Chinese-herb ‘Hange-shashinto’ and sodium bicarbonate for diarrhea. After tumor marker normalization, residual masses were resected and chemotherapy was continued in the case of without marker normalization. Results: The median age was 31 years old (range; 17–48). The median number of cycles of prior chemotherapy was 6 (range; 2–30). The median number of cycles of IrN therapy was 3 (range: 1–9). The response rate was 30.8% ( CR: 0%, PRm−: 15.4%, PRm+: 15.4% ) and the outcome was no evidence of disease (NED) 46.2%, alive with disease (AWD) 25.6% and dead 28.2%, respectively. Twenty-five patients with IrN therapy as 2nd (17 cases) and 3rd (8 cases) line salvage therapy showed that the response rate was 48% (CR: 0%, PRm−: 16.0%, PRm+: 16.0, NCm−: 16.0%) and the outcome was as follows; NED 64%, AWD 16% and dead 20%, respectively. On the other hand, 14 pts who had the treatment as fourth-line or more showed less response rate (PR: 28.5%) and worse outcome (NED 14.2%). Major adverse events more than grade 3 were neutropenia and thrombocytopenia. These adverse events were manageable. Grade 4 diarrhea which was major adverse event of CPT-11 was observed in only one case and there was no treatment related death. Conclusions: This study demonstrates that combination chemotherapy with CPT-11 and CDGP showed significant anticancer activity for patients with CDDP-refractory GCT without severe adverse events. These findings suggest that salvage IrN therapy may be one of the options as second- or third-line therapy. No significant financial relationships to disclose.
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Affiliation(s)
- T. Nakamura
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - N. Nonomura
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - K. Mikami
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - T. Shiraishi
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - N. Takaha
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - A. Okuyama
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
| | - T. Miki
- Kyoto Prefectural University of Medicine, Kyoto, Japan; Osaka University, Osaka, Japan
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Mizutani Y, Li Y, Shiraishi T, Nakamura T, Mikami K, Okihara K, Takaha N, Ukimura O, Kawauchi A, Miki T. Significance of the expression of thymidylate synthase in prostate cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e16163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e16163 Background: Thymidylate synthase ( TS ) is an important enzyme in de novo DNA synthesis pathway. 5-Fluorouracil ( 5-FU ), an anticancer chemotherapeutic agent used clinically against a variety of cancers including prostate cancer, inhibits DNA synthesis by binding TS. In the present study, we examined TS expression in prostate cancer and investigated its prognostic significance. Methods: Fifty-two prostate cancer tissue specimens were obtained from patients who underwent radical prostatectomy for prostate cancer without neoadjuvant hormonal therapy. Forty-eight prostate cancer tissue specimens were also obtained from patients who underwent radical prostatectomy for prostate cancer with neoadjuvant hormonal therapy. We examined prostate cancer tissue and normal prostate tissue for TS expression by immunohistochemistry. Results: TS was expressed at higher levels in prostate cancer without neoadjuvant hormonal therapy, compared with normal prostate.TS expression in stage T3 prostate cancer was higher than that in stage T2 prostate cancer. In addition, the level of TS expression in Gleason score 7 or greater prostate cancer was higher than that in Gleason score less than 7 prostate cancer. Patients with prostate cancer with negative TS expression without neoadjuvant hormonal therapy had a longer postoperative recurrence-free rate than those with positive expression in the 5 year follow-up. In addition, patients with Gleason score less than 7 prostate cancer with negative TS expression had a much longer postoperative recurrence-free rate than those with positive expression in the 5-year follow-up. TS expression was significantly decreased in prostate cancer patients who received neoadjuvant hormonal therapy, especially stage T2 prostate cancer patients. Conclusions: The current study has demonstrated for the first time that TS expression may be a prognostic parameterr for prostate cancer patients undergoing radical prostatectomy. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Mizutani
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Y. Li
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Shiraishi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Nakamura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Mikami
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Okihara
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N. Takaha
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - O. Ukimura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A. Kawauchi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Miki
- Kyoto Prefectural University of Medicine, Kyoto, Japan
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Maeda N, Osuga K, Higashihara H, Shimazu K, Morii E, Mikami K, Nakazawa T, Hori S, Tomoda K, Nakamura H. Abstract No. 153: In Vivo Evaluation of Cisplatin-Loaded Superabsorbent Polymer Microspheres for Use in Chemoembolization of VX2 Liver Tumors. J Vasc Interv Radiol 2009. [DOI: 10.1016/j.jvir.2008.12.139] [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: 10/21/2022] Open
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Mizutani Y, Nakanishi H, Shiraishi T, Nakamura T, Mikami K, Takaha N, Okihara K, Ukimura O, Kawauchi A, Miki T. Prognostic significance of x-linked inhibitor of apoptosis protein expression in renal cell carcinoma. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.5105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Nakamura T, Mikami K, Takaha N, Shiraishi T, Kawauchi A, Mizutani Y, Miki T. MP-21.08: Salvage chemotherapy with paclitaxel, gemcitabine and nedaplatin (TGN) for cisplatin refractory germ cell tumors. Urology 2007. [DOI: 10.1016/j.urology.2007.06.126] [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: 10/22/2022]
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Murakami R, Murakami S, Tsushima R, Ueda C, Mikami K, Ebina T, Kumasaka R, Nakamura N, Okumura K. Glycaemic control and serum intact parathyroid hormone levels in diabetic patients on haemodialysis therapy. Nephrol Dial Transplant 2007; 23:315-20. [DOI: 10.1093/ndt/gfm639] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mizutani Y, Toiyama D, Shiraishi T, Nakamura T, Mikami K, Takaha N, Okihara K, Ukimura O, Kawauchi A, Miki T. Enhanced orotate phosphoribosyltransferase activity in renal cell carcinoma and its prognostic significance. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.15590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
15590 Background: 5-Fluorouracil ( 5-FU ) is an anticancer agent clinically used against various cancers including renal cell carcinoma ( RCC ). 5-FU is a prodrug and orotate phosphoribosyltransferase ( OPRT ) is the principal enzyme which directly converts 5-FU to an active anticancer metabolite, 5-fluoro-2’-deoxyuridine 5’-monophosphate. Furthermore, OPRT is the key enzyme in the de novo DNA and RNA synthetic process, which converts orotic acid to orotidine 5’-phosphate. Little is known about the significance of OPRT in a variety of cancers including RCC. We investigated OPRT activity in 83 RCC and evaluated the association between OPRT activity and the stage/grade of RCC. The relationship between OPRT activity in RCC cells and their sensitivity to 5-FU was also examined. Methods: OPRT activity in non-fixed fresh frozen RCC and normal kidney were determined enzymatically by the 5-FU phosphorylation assay. The sensitivity of RCC cells to 5-FU was assessed by the microculture tetrazolium dye assay. Results: OPRT activity was approximately 8.5-fold higher in RCC compared to normal kidney. OPRT activity in T3/4 RCC was 3-fold higher than that in T1/2 RCC. OPRT activity in M1 RCC was 2.5-fold higher than that in M0 RCC. In addition, OPRT activity in Stage III/IV RCC was 3-fold higher than that in Stage I/II RCC. The level of OPRT activity in Grade 3 RCC was 3-fold higher than that in Grade 1/2 cancer. Patients with RCC with low OPRT activity had a longer postoperative disease-specific survival than those with high activity in the 5-year follow-up. OPRT activity in RCC cells positively correlated with their sensitivity to 5-FU. Conclusions: The present study has demonstrated that OPRT activity in RCC was higher than that in normal kidney, and that OPRT activity positively correlated with the stage/grade of RCC. Moreover, higher OPRT activity in RCC predicted worse prognosis and higher sensitivity to 5-FU. These results suggest that OPRT activity may be used as both a prognostic parameter and a predictive indicator for 5-FU efficacy in RCC. No significant financial relationships to disclose.
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Affiliation(s)
- Y. Mizutani
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - D. Toiyama
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Shiraishi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Nakamura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Mikami
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N. Takaha
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Okihara
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - O. Ukimura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A. Kawauchi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Miki
- Kyoto Prefectural University of Medicine, Kyoto, Japan
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Abstract
BACKGROUND Patients with second primary lung cancer (SPLC) have a heterogeneous background. The optimum modality of treatment for SPLC patients has not yet been determined. The objective of this study was to attempt to identify the value of less vigorous therapies such as segmentectomy or video-assisted thoracic surgery (VATS) in SPLC. METHODS We retrospectively reviewed the medical records of 46 patients who underwent resection for SPLC in Fukuoka University Hospital between January 1994 and April 2005. Patients were separated into two groups (LVT: less vigorous therapy including segmentectomy or VATS lobectomy; LCT: lobectomy with conventional thoracotomy). The characteristics of each group were evaluated and survival rates were analyzed at 5 years after surgery. RESULTS The mean amount of blood loss was found to be significantly different ( P = 0.0062) with 59.44 +/- 14.00 ml for LVT cases and 254.48 +/- 63.62 ml for LCT. None of the LVT patients experienced postoperative complications. The 5-year survival rate was 62.7 % for LVT and 57.7 % for LCT. There was no significant difference in survival rates between these groups. CONCLUSIONS Although differences were seen in the characteristics, less invasive surgery such as VATS or segmentectomy may be a feasible treatment for SPLC.
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Affiliation(s)
- A Iwasaki
- Second Department of Surgery, School of Medicine, Fukuoka University, 45-1, 7-chome Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
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Yamagami T, Masunami T, Kato T, Tanaka O, Hirota T, Nomoto T, Mikami K, Miki T, Nishimura T. Spontaneous healing of chyle leakage after lymphangiography. Br J Radiol 2005; 78:854-7. [PMID: 16110112 DOI: 10.1259/bjr/61177542] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [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: 11/05/2022] Open
Abstract
We report a 34-year-old man with the complication of chylous ascites after retroperitoneal lymphadenectomy that was refractory to various conservative therapies. Because surgical treatment for chylous ascites was considered, lymphangiography was performed to identify the area of leakage of chyle, after which the chylous ascites spontaneously healed.
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Affiliation(s)
- T Yamagami
- Department of Radiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-chyo, Kawaramachi-Hirokoji, Kamigyo, Kyoto, 602-8566, Japan
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Noritomi T, Yamashita Y, Kodama T, Mikami K, Hashimoto T, Konno T, Maekawa T, Shirakusa T. Application of Dye-Enhanced Laser Ablation for Liver Resection. Eur Surg Res 2005; 37:153-8. [PMID: 16088180 DOI: 10.1159/000085962] [Citation(s) in RCA: 3] [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] [Received: 06/02/2004] [Accepted: 03/20/2005] [Indexed: 11/19/2022]
Abstract
BACKGROUND Dye-enhanced laser ablation (DLA) using a low-power diode laser for indocyanine green (ICG)-stained tissue has proven its effectiveness in dye-enhanced laser photocoagulation of retinal vessels or endoscopic surgical mucosectomy. We have applied DLA in hepatectomy and described its histological distinction in comparison with the cavitron ultrasonic surgical aspirator (CUSA). METHODS A diode laser (UDL-60 Laser unit, Olympus, Tokyo, Japan) with 810 +/- 20 nm wavelength was employed for this study. The ICG dye (Diagnogreen, Daiichi Pharmaceutical, Tokyo, Japan) with a peak absorption wavelength at 800-810 nm was injected topically into the resection plane of the liver. The liver tissue was divided by touching the tip of the diode laser. Three different concentrations of ICG solution such as 2.0, 1.0 and 0.5 mg/ml were tested in the preliminary animal experiment. The use of a low-power diode laser at 10 W with an ICG concentration of 0.5 mg/ml was the appropriate combination for liver resection. In the clinical series, 27 hepatectomies were performed by DLA, and 10 with CUSA. RESULTS DLA demonstrated smooth cutting and good hemostasis in liver resection. Among the hepatectomy cases given DLA, no postoperative hemorrhage or bile leakage was noted. The postoperative hospital stay was significantly shorter in the DLA than the CUSA group. The cut surface of the liver was sealed microscopically with a layer of protein coagulum. CONCLUSIONS A layer of protein sealant on the cut surface of the liver contributes to the short postoperative hospital stay when using DLA.
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Affiliation(s)
- T Noritomi
- Second Department of Surgery, Fukuoka University School of Medicine, Fukuoka, Japan.
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Mizutani Y, Nakanishi H, Yamamoto K, Nakamura T, Nomoto T, Mikami K, Okihara K, Yoneda K, Kawauchi A, Miki T. Prognostic significance of Smac/DIABLO expression in renal cell carcinoma. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Y. Mizutani
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - H. Nakanishi
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - K. Yamamoto
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - T. Nakamura
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - T. Nomoto
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - K. Mikami
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - K. Okihara
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - K. Yoneda
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - A. Kawauchi
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
| | - T. Miki
- Kyoto Prefectural Univ of Medicine, Kyoto, Japan
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Mizutani Y, Nakanishi H, Nakamura T, Nomoto T, Mikami K, Okihara K, Ukimura O, Kawauchi A, Fujito A, Miki T. Thymidylate synthase activity as a significant prognostic marker in patients with renal cell carcinoma. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.4630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Y. Mizutani
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - H. Nakanishi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Nakamura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Nomoto
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Mikami
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K. Okihara
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - O. Ukimura
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A. Kawauchi
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A. Fujito
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T. Miki
- Kyoto Prefectural University of Medicine, Kyoto, Japan
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Ichikawa T, Mikami K, Suzuki H, Imamoto T, Yamazaki T, Naya Y, Ueda T, Igarashi T, Ito H. Laparoscopic adrenalectomy for pheochromocytoma. Biomed Pharmacother 2003; 56 Suppl 1:149s-153s. [PMID: 12487272 DOI: 10.1016/s0753-3322(02)00209-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We reviewed 10 cases of laparoscopic adrenalectomy for pheochromocytoma and compared the results with those of a recent series of 11 patients who underwent open adrenalectomy. Of the 10 cases, the tumor was removed successfully in all cases except in one case with laparoscopy that required open laparotomy. A pair of laparoscopic coagulating scissors was utilized in all except the initial two cases. In the laparoscopy group (excluding the initial two cases and the case that required conversion to open surgery), mean operative time and blood loss were 145 min and 55 ml, respectively. No significant difference was observed in mean operative time between the laparoscopy group and the open surgery group (165 min for open surgery). Mean blood loss of the laparoscopy group was significantly less than that of the open surgery group (330 ml for open surgery, P = 0.01). Mean intervals to first ambulation and oral intake, and postoperative hospital stay of the laparoscopy group, tended to be less than those of the open surgery group, although no statistical significance was observed (2.3 versus 3.2 d, 2.9 versus 3.6 d, and 12 versus 14 d, respectively). We conclude that laparoscopic adrenalectomy for pheochromocytoma is equally effective and less invasive than open adrenalectomy and should be considered the therapy of choice even for pheochromocytoma.
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Affiliation(s)
- T Ichikawa
- Department of Urology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.
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Nakai T, Mikami K, Taya S, Fujita Y. [2,3]-Wittig rearrangement of unsymmetrical bis-allylic ethers. Facile method for regio- and stereoselective synthesis of 1,5-dien-3-ols. J Am Chem Soc 2002. [DOI: 10.1021/ja00411a038] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [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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Mikami K, Kimura Y, Kishi N, Nakai T. Acyclic diastereoselection of the [2,3]-Wittig sigmatropic rearrangement of a series of isomeric crotyl ethers. A conceptual model for the transition-state geometry. J Org Chem 2002. [DOI: 10.1021/jo00150a033] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [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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Mikami K, Taya S, Nakai T, Fujita Y. New sigmatropic sequences based on the [2,3] Wittig rearrangement of bis(allylic) ethers. Regiocontrolled joining reactions of two or three allylic moieties leading to unsaturated carbonyl compounds. J Org Chem 2002. [DOI: 10.1021/jo00339a051] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Maruyama R, Ondo K, Mikami K, Ueda H, Motohiro A. Clinical course and management of patients undergoing open window thoracostomy for thoracic empyema. Respiration 2002; 68:606-10. [PMID: 11786716 DOI: 10.1159/000050580] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND While open window thoracostomy (OWT) is a safe procedure and is indicated in patients who have thoracic empyema either with or without a bronchopleural fistula, it may prolong the hospital stay. OBJECTIVES We retrospectively analyzed the relationship between the etiology of thoracic empyema and the open window interval (OWI). METHODS Between January 1986 and May 1997, 53 patients resistant to conventional therapy underwent OWT for thoracic empyema at the Department of Surgery of the National Minami-Fukuoka Chest Hospital. The patients were classified into five groups based on the etiological findings of thoracic empyema. 44 patients also underwent closure of the window until June 1999. RESULTS The average OWI was 180.4 +/- 51.9 (mean +/- SE) days for postoperative empyemas in lung cancer, 128.0 +/- 32.1 days for bacterial nontuberculous empyemas, 189.6 +/- 24.1 days for fungal empyemas, 365.8 +/- 201 days for empyemas caused by atypical mycobacteria and 322.0 +/- 58.7 days for tuberculous empyemas. There was no evidence that the OWI was related to either sex, age, etiology of thoracic empyemas, performance status, the existence of bronchopleural fistulae, complications of diabetes mellitus or preoperative malnutrition status in multivariable models. 5 patients underwent a second OWT because of recurrence of empyema. Mortality rate was 7.5%. CONCLUSIONS There was no relationship between clinical factors including nutritional assessment and OWI. OWT generally is a safe and effective procedure for thoracic empyema resisting to conventional therapy except that it can make an extended hospital stay necessary.
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Affiliation(s)
- R Maruyama
- Department of Surgery, National Minami-Fukuoka Chest Hospital, Fukuoka, Japan.
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43
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Mikami K, Ueki M, Matsumoto Y, Terada M. Tetranuclear titanium 7,7'-modified binaphtholate cluster as a novel chiral Lewis acid catalyst. Chirality 2001; 13:541-4. [PMID: 11579446 DOI: 10.1002/chir.1174] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Chiral tetranuclear Ti cluster, a cubic structure constituted of four Ti atoms and OHs, and six (R)-binaphthols (BINOL) bridged two Ti atoms as ligands, is shown to be a novel chiral Lewis acid catalyst for the [2+3] cycloaddition reaction with nitrones. The chiral Ti clusters with 7,7'-substituted (R)-BINOL ligands was synthesized to give enhanced enantiomeric excesses up to 78% ee.
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Affiliation(s)
- K Mikami
- Department of Chemical Technology, Tokyo Institute of Technology, Tokyo, Japan.
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44
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Mikami K, Ohba S, Ohmura H, Kubodera N, Nakagawa K, Okano T. Asymmetric catalytic ene-cyclization approach to 2-fluoro-19-nor-1,25-dihydroxyvitamin D(3) A-ring analog with significant transactivation activity. Chirality 2001; 13:366-71. [PMID: 11400190 DOI: 10.1002/chir.1046] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
1alpha,25-Dihydroxyvitamin D(3) (1alpha,25(OH)2D3) has been shown to modulate not only proliferation and differentiation, but also apoptosis in malignant cells, indicating that it could be useful for the treatment of cancer and psoriasis. However, little information has been available on the binding conformation of the 1alpha,25(OH)2D3 molecule and its analogs with the vitamin D receptor (VDR). Therefore, we synthesized 2alpha-fluorinated A-ring analogs of 19-nor-1alpha,25(OH)2D3 in order to investigate the VDR-binding conformation of the A-rings on the basis of the (19)F NMR analysis. The 2alpha-fluoro-19-nor-1alpha,25-dihydroxyvitamin D3 A-ring analog thus synthesized via a asymmetric catalytic carbonyl-ene cyclization, shows significant activity in transactivation.
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Affiliation(s)
- K Mikami
- Department of Chemical Technology, Tokyo Institute of Technology, Tokyo 152-8552, Japan.
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45
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Abstract
A histidine kinase, Hik33, appears to sense decreases in temperature and to regulate the expression of certain cold-inducible genes in the cyanobacterium Synechocystis sp. PCC6803. To examine the role of Hik33 in the regulation of gene expression, we analysed a DeltaHik33 mutant using the DNA microarray technique. In wild-type cells, genes that were strongly induced at low temperature encoded proteins that were predominantly subunits of the transcriptional and translational machinery. Most cold-repressible genes encoded components of the photosynthetic machinery. Mutation of the hik33 gene suppressed the expression of some of these cold-regulated genes, which could be divided into three groups according to the effect of the mutation of hik33. In the first group, regulation of gene expression by low temperature was totally abolished; in the second group, the extent of such regulation was reduced by half; and, in the third group, such regulation was totally unaffected. These results suggest that expression of the genes in the first group is regulated solely by Hik33, expression of genes in the third group is regulated by an as yet unidentified cold sensor, and expression of genes in the second group is regulated by both these cold sensors.
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Affiliation(s)
- I Suzuki
- Department of Regulation Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan
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46
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Chiba M, Mikami K, Iizuka M, Yukawa M, Watanabe S, Takazoe M, Fukushima T, Koganei K, Kishibe T. Elevated plasma (1-->3)-beta-D-glucan, a fungal cell wall constituent, in a subgroup of Crohn disease. Scand J Gastroenterol 2001; 36:447-8. [PMID: 11336174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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47
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Noda S, Tanaka K, Sawamura S, Sasaki M, Matsumoto T, Mikami K, Aiba Y, Hasegawa H, Kawabe N, Koga Y. Role of nitric oxide synthase type 2 in acute infection with murine cytomegalovirus. J Immunol 2001; 166:3533-41. [PMID: 11207313 DOI: 10.4049/jimmunol.166.5.3533] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Whether or not NO plays a critical role in murine CMV (MCMV) infection has yet to be elucidated. In this study, we examined the role of NO in acute infection with MCMV using NO synthase type 2 (NOS2)-deficient mice. NOS2(-/-) mice were more susceptible to lethal infection with MCMV than NOS2(+/+) mice and generated a much higher peak virus titer in the salivary gland after acute infection. A moderate increase in the MCMV titer was also observed in other organs of NOS2(-/-) mice such as the spleen, lung, and liver. The immune responses to MCMV infection including NK cell cytotoxicity and CTL response in NOS2(-/-) mice were comparable with those of NOS2(+/+) mice. Moreover, the ability to produce IFN-gamma is not impaired in NOS2(-/-) mice after MCMV infection. The peritoneal macrophages from NOS2(-/-) mice, however, exhibited a lower antiviral activity than those from NOS2(+/+) mice, resulting in an enhanced viral replication in macrophages themselves. Treatment of these cells from NOS2(+/+) mice with a selective NOS2 inhibitor decreased the antiviral activity to a level below that obtained with NOS2(-/-) mice. In addition, the absence of NOS2 and NOS2-mediated antiviral activity of macrophages resulted in not only an enhanced MCMV replication and a high mortality but also a consequent risk of the latency. It was thus concluded that the NOS2-mediated antiviral activity of macrophages via NO plays a protective role against MCMV infection at an early and late stage of the infection.
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MESH Headings
- Acute Disease
- Animals
- Cytotoxicity, Immunologic/genetics
- Herpesviridae Infections/enzymology
- Herpesviridae Infections/genetics
- Herpesviridae Infections/immunology
- Herpesviridae Infections/mortality
- Interferon-gamma/biosynthesis
- Killer Cells, Natural/enzymology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/virology
- Macrophages, Peritoneal/enzymology
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/virology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Muromegalovirus/growth & development
- Muromegalovirus/immunology
- Nitric Oxide Synthase/deficiency
- Nitric Oxide Synthase/genetics
- Nitric Oxide Synthase/physiology
- Nitric Oxide Synthase Type II
- Survival Rate
- T-Lymphocytes, Cytotoxic/enzymology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/virology
- Viral Load
- Viral Plaque Assay
- Virus Latency/immunology
- Virus Replication/immunology
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Affiliation(s)
- S Noda
- Department of Infectious Diseases, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
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48
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Mikami K, Angelaud R, Ding K, Ishii A, Tanaka A, Sawada N, Kudo K, Senda M. Asymmetric activation of chiral alkoxyzinc catalysts by chiral nitrogen activators for dialkylzinc addition to aldehydes: super high-throughput screening of combinatorial libraries of chiral ligands and activators by HPLC-CD/UV and HPLC-OR/RIU systems. Chemistry 2001; 7:730-7. [PMID: 11261671 DOI: 10.1002/1521-3765(20010202)7:3<730::aid-chem730>3.0.co;2-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Asymmetric catalysts, prepared by chiral ligand exchange or chiral modification, can evolve further into highly activated catalysts through engineering with chiral activators. Two new methodologies for "super high-throughput screening" (SHTS) of chiral ligands and activators have been developed as a combination of HPLC-CD/UV (CD/ UV = circular dichroism/ultraviolet spectroscopy) or -OR/RIU (OR/RIU = optical rotation/refractive index unit) with a combinatorial chemistry (CC) factory. With these techniques, the % ee of the product is determined within minutes without separation of the enantiomeric products by using a nonchiral stationary phase. Therefore, those SHTS techniques combined with our 'asymmetric activation' concept can provide a powerful strategy for finding the best activated chiral catalyst.
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Affiliation(s)
- K Mikami
- Department of Chemical Technology, Faculty of Engineering, Tokyo Institute of Technology, Japan.
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49
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Mikami K, Aikawa K, Korenaga T. General synthetic route to chiral flexible biphenylphosphine ligands: the use of a chiral additive enables the preparation and observation of metal complexes incorporating the enantiopure form. Org Lett 2001; 3:243-5. [PMID: 11430045 DOI: 10.1021/ol0068896] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[figure: see text] The enantio- and diastereomerically pure metal complex of a chirally flexible BIPHEP ligand is obtained through enantiomer-selective coordination of a BIPHEP-Ru complex with enantiopure 3,3'-dimethyldiaminobinaphthyl, DM-DBN, followed by epimerization of the remaining BIPHEP-Ru enantiomer to complex with DM-DABN. Thus, an efficient and general synthetic route to a variety of substituted BIPHEP ligands from biphenol and observation of the enantiomerically pure BIPHEP ligands in their Ru(II) complexes are described.
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Affiliation(s)
- K Mikami
- Department of Applied Chemistry, Tokyo Institute of Technology, Tokyo 152-8552, Japan.
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50
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Kawahara K, Hiratsuka M, Mikami K, Makihata S, Yoneda S, Shiraishi T, Okabayashi K, Shirakusa T. Obliterative airway disease and graft stenting in pig-to-dog tracheal xenotransplantation. Jpn J Thorac Cardiovasc Surg 2001; 49:53-7. [PMID: 11233243 DOI: 10.1007/bf02913124] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Obliterative airway disease occurring in concordant tracheal xenografts in rodent models is histologically similar to obliterative bronchiolitis in human lung allografts. We studied whether obliterative airway disease would occur in a large animal-discordant model. METHODS Pig and dog tracheas were cryopreserved for 7 to 14 days, and 18 recipient dogs given splenectomy 7 days before transplantation, then seven tracheal rings were removed and a corresponding five-ring donor tracheal segment was transplanted to the excised site. Grafts were wrapped with pedicled omentum and inmmunosuppression was conducted with tacrolimus or deoxyspergualin. Graft status was observed by bronchoscopy. Dogs were classified into three groups. Group 1 consisted of dog-to-dog allotransplantation animals (control group, n = 5), Group 2 of pig-to-dog xenotransplantation animals (n = 8), and Group 3 of pig-dog xenotransplantation animals who also underwent graft stenting immediately after transplantation (n = 5). RESULTS Grafts healed well in 4 of 5 Group 1 dogs. Tracheal stricture began on day 5 post transplantation and the lumen was obstructed by fibrosis by days 8 to 14 in all Group 2 dogs. All Group 3 dogs remained in good respiratory status until death. CONCLUSION Obliterative airway disease developed quickly in pig-to-dog discordant tracheal xenografts. Graft stenting is a feasible treatment for managing of tracheal obstruction.
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Affiliation(s)
- K Kawahara
- Second Department of Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
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