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Hayashi T, Ikeda K, Sakamoto N, Sentani K, Hsi RS, Sekino Y, Kitano H, Goto K, Inoue S, Yasui W, Black PC, Teishima J. Transition of ANXA10 expression is a useful diagnostic and prognostic marker in upper tract urothelial carcinoma. Urol Oncol 2020. [DOI: 10.1016/j.urolonc.2020.10.047] [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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2
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Inoue S, Hayashi T, Hieda K, Miyamoto S, Fujii S, Sekino Y, Kitano H, Ikeda K, Goto K, Teishima J, Matsubara A. Longitudinal analysis of conventional laparoscopic, posterior retroperitoneoscopic, and laparoendoscopic single-site adrenalectomy regarding cosmesis and satisfaction outcomes. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33186-4] [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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3
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Kitano H, Mamiya A, Masaoka Y, Hidai C. An EGF motif of Del1 inhibits efficient angiogenesis and suppresses tumour growth in vivo. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz428.027] [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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4
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Dueramae I, Nishida M, Nakaji-Hirabayashi T, Matsumura K, Kitano H. Biodegradable shape memory polymers functionalized with anti-biofouling interpenetrating polymer networks. J Mater Chem B 2016; 4:5394-5404. [DOI: 10.1039/c6tb01478j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel type of shape memory polyurethane (SMPU) with high mechanical properties and biodegradability was constructed using a lactone copolymer (poly(ε-caprolactone-co-γ-butyrolactone), PCLBL), a diol- or triol-based chain extender (1,5-pentanediol, glycerol and 2-amino-2-hydroxymethyl-1,3-propanediol) and a diisocyanate cross-linker (1,6-hexamethylene diisocyanate).
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Affiliation(s)
- I. Dueramae
- Frontier Research Core for Life Sciences
- University of Toyama
- Toyama 930-8555
- Japan
- Research Center of Micro/Nano Technology
| | - M. Nishida
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - T. Nakaji-Hirabayashi
- Frontier Research Core for Life Sciences
- University of Toyama
- Toyama 930-8555
- Japan
- Graduate School of Science and Engineering
| | - K. Matsumura
- School of Materials Science
- Japan Advanced Institute of Science and Technology
- Nomi-shi
- Japan
| | - H. Kitano
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
- Institute for Polymer-Water Interfaces
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5
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Nakaji-Hirabayashi T, Fujimoto K, Kato Y, Kitano H, Inoue Y, Ishihara K. Advantages of anchoring growth factors to materials for neural stem/progenitor cell proliferation. J Mater Chem B 2016; 4:6213-6220. [DOI: 10.1039/c6tb01944g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We tried to clarify the mechanisms underlying immobilized-growth factor in NSPC regulation using approaches from materials science and cell biology.
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Affiliation(s)
- T. Nakaji-Hirabayashi
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - K. Fujimoto
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Y. Kato
- Department of Applied Chemistry
- Faculty of Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - H. Kitano
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555
- Japan
| | - Y. Inoue
- Department of Materials Engineering
- Graduate School of Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
| | - K. Ishihara
- Department of Materials Engineering
- Graduate School of Engineering
- The University of Tokyo
- Tokyo 113-8656
- Japan
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6
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Nakaji-Hirabayashi T, Kitano H. Interleukin-10 chimeric protein to protect transplanted neural progenitor cells from immune responses. J Mater Chem B 2014; 2:8598-8607. [DOI: 10.1039/c4tb01413h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Novel system for protecting transplanted cells from inflammatory responses.
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Affiliation(s)
| | - H. Kitano
- Department of Applied Chemistry
- Graduate School of Science and Engineering
- University of Toyama
- Toyama 930-8555, Japan
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8
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Nyuji M, Kitano H, Shimizu A, Lee JM, Kusakabe T, Yamaguchi A, Matsuyama M. Characterization, Localization, and Stage-Dependent Gene Expression of Gonadotropin Receptors in Chub Mackerel (Scomber japonicus) Ovarian Follicles. Biol Reprod 2013; 88:148. [DOI: 10.1095/biolreprod.112.107292] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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9
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Hashimoto K, Cho K, Shibauchi T, Kasahara S, Mizukami Y, Katsumata R, Tsuruhara Y, Terashima T, Ikeda H, Tanatar MA, Kitano H, Salovich N, Giannetta RW, Walmsley P, Carrington A, Prozorov R, Matsuda Y. A sharp peak of the zero-temperature penetration depth at optimal composition in BaFe2(As(1-x)P(x))2. Science 2012; 336:1554-7. [PMID: 22723416 DOI: 10.1126/science.1219821] [Citation(s) in RCA: 243] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
In a superconductor, the ratio of the carrier density, n, to its effective mass, m*, is a fundamental property directly reflecting the length scale of the superfluid flow, the London penetration depth, λ(L). In two-dimensional systems, this ratio n/m* (~1/λ(L)(2)) determines the effective Fermi temperature, T(F). We report a sharp peak in the x-dependence of λ(L) at zero temperature in clean samples of BaFe(2)(As(1)(-x)P(x))(2) at the optimum composition x = 0.30, where the superconducting transition temperature T(c) reaches a maximum of 30 kelvin. This structure may arise from quantum fluctuations associated with a quantum critical point. The ratio of T(c)/T(F) at x = 0.30 is enhanced, implying a possible crossover toward the Bose-Einstein condensate limit driven by quantum criticality.
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Affiliation(s)
- K Hashimoto
- Department of Physics, Kyoto University, Kyoto, Japan
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10
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Kojima T, Kitano H, Niwa M, Saito K, Matsushita Y, Fukushima K. Imaging analysis of cosmetic ingredients interacted with human hair using TOF-SIMS. SURF INTERFACE ANAL 2010. [DOI: 10.1002/sia.3635] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Abstract
The effect of the distribution of pore radii in the resin beads on protein binding was taken into account to analyze the elution profiles of proteins from the polymer-packed column obtained by repetitive injection method. By assuming that the distribution of pore radii in the resin beads is logarithmic Gaussian, the theoretical curves obtained agreed well with the experimental data.
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Affiliation(s)
- M Hasegawa
- Department of Polymer Chemistry, Kyoto University, Kyoto, Japan
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12
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Suzuki M, Sakurai H, Seno S, Kitanishi T, Shimizu T, Nishida Y, Morikawa H, Inubushi T, Kitano H. Use of real‐time magnetic resonance image guidance in endoscopic sinus surgery. MINIM INVASIV THER 2009; 14:376-84. [PMID: 16754185 DOI: 10.1080/13645700500381511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We evaluated the effectiveness of magnetic resonance image (MRI) guidance using an optical tracking system (MRI-guided therapy: MRT) in performing endoscopic sinus surgery (ESS). The profiles of the fourteen patients in the present study were as follows: eleven with mucocele in the paranasal sinus, one with recurrent chronic sinusitis, one with maxillary cancer, and one with Graves' ophthalmopathy. Preparation of the MRT system required an additional 54 min in cases involving general anesthesia, and an additional 17 min in cases involving local anesthesia, in comparison with corresponding control groups undergoing ESS in a traditional operating room. We developed nonmetal probes that were visualized in a real-time mode and assistive devices for the optical tracking system that were equipped to avoid obstruction caused by surgical instruments as well as by the hands of surgeons. Using these unique devices, anatomic landmarks were visualized using the present MRT system. The prognosis of patients was favorable, and in particular, no patients with sinus mucocele showed a recurrence of their lesions. We concluded that the MRT system used here for performing ESS was beneficial, especially in terms of the intranasal marsupialization of sinus mucoceles and for the verification of orbital contents.
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Affiliation(s)
- M Suzuki
- Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, Japan
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13
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Mao XQ, Shirakawa T, Kawai M, Enomoto T, Sasaki S, Dake Y, Kitano H, Hagihara A, Hopkin JM, Morimoto K. Association between asthma and an intragenic variant of CC16 on chromosome 11q13. Clin Genet 2008. [DOI: 10.1111/j.1399-0004.1998.tb02582.x] [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: 11/30/2022]
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14
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Rashid H, Kitano H, Lee KH, Nii S, Shigematsu T, Kadomura K, Yamaguchi A, Matsuyama M. Fugu (Takifugu rubripes) sexual differentiation: CYP19 regulation and aromatase inhibitor induced testicular development. Sex Dev 2008; 1:311-22. [PMID: 18391543 DOI: 10.1159/000108935] [Citation(s) in RCA: 31] [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] [Received: 08/14/2007] [Accepted: 09/13/2007] [Indexed: 11/19/2022] Open
Abstract
In order to assess the involvement of aromatase CYP19 isoforms and endogenous sex steroids in gonadal sex differentiation and development of the Japanese fugu (Takifugu rubripes), an aromatase inhibitor (AI, fadrozole) was administered to developing fishes from the 'first feeding' till the 100th day after hatching. It was observed that ovarian cavity formation was inhibited by fadrozole at doses of 500 and 1000 microg/g diet, which was followed by testicular differentiation in all treated fugu. In the non-treated fugu, CYP19A was predominantly expressed in the ovary and CYP19B in the brain (in both sexes), although both were expressed interchangeably at low levels. An exceptionally high expression of CYP19B was also evident in testis throughout the study period. Both forms of CYP19 mRNA showed low levels of expression in brain and gonad with no significant differences between the two AI treatments. AI treatment inhibited CYP19A mRNA in trunk during the crucial period of ovarian cavity formation and CYP19B in gonad and brain by the end of gonadal sex differentiation. An elevation of testosterone and 11-ketotestosterone was observed which can be associated with the down-regulation of the circulating 17beta-estradiol production during the AI treatment period. After stopping AI treatment, both circulating estrogen and androgen were normalized. The current results suggest that suppression of CYP19A before and during morphological sex differentiation inhibits ovarian cavity formation in fugu. Furthermore, non-detectable limits of 17beta-estradiol and high testosterone levels by the end of the gonadal differentiation period can be ascribed to inhibition of CYP19B, suggesting that conversion of 17beta-estradiol from testosterone is plausibly regulated by CYP19B, and that this factor (CYP19B) may play an important role in AI-induced testicular development after gonadal sex differentiation through regulation of the testosterone-17beta-estradiol balance in fugu.
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Affiliation(s)
- H Rashid
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Hakozaki, Higashi-Ku, Fukuoka, Japan
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15
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Abstract
One of the essential issues in systems biology is to identify fundamental principles that govern living organisms at the system level. In this chapter, I argue that robustness is a fundamental feature of living systems where its relationship with evolution-trade-offs among robustness, fragility, resource demands, and performance-provides a possible framework for how biological systems have evolved and been organized. In addition, diseases can be con- sidered as a manifestation of fragility of the system. In some cases, such as cancer, the disease state establishes its own robustness against therapeutic interventions. Understanding robustness and its intrinsic properties will provide us with a more profound understanding of biological systems, their anomalies, and countermeasures.
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Affiliation(s)
- H Kitano
- The Systems Biology Institute, Shibuya, Tokyo, Japan.
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16
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Hucka M, Finney A, Bornstein BJ, Keating SM, Shapiro BE, Matthews J, Kovitz BL, Schilstra MJ, Funahashi A, Doyle JC, Kitano H. Evolving a lingua franca and associated software infrastructure for computational systems biology: the Systems Biology Markup Language (SBML) project. ACTA ACUST UNITED AC 2006; 1:41-53. [PMID: 17052114 DOI: 10.1049/sb:20045008] [Citation(s) in RCA: 157] [Impact Index Per Article: 8.7] [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
Biologists are increasingly recognising that computational modelling is crucial for making sense of the vast quantities of complex experimental data that are now being collected. The systems biology field needs agreed-upon information standards if models are to be shared, evaluated and developed cooperatively. Over the last four years, our team has been developing the Systems Biology Markup Language (SBML) in collaboration with an international community of modellers and software developers. SBML has become a de facto standard format for representing formal, quantitative and qualitative models at the level of biochemical reactions and regulatory networks. In this article, we summarise the current and upcoming versions of SBML and our efforts at developing software infrastructure for supporting and broadening its use. We also provide a brief overview of the many SBML-compatible software tools available today.
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Affiliation(s)
- M Hucka
- Control and Dynamical Systems, California Institute of Technology, Pasadena 91125, USA.
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17
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Carninci P, Kasukawa T, Katayama S, Gough J, Frith MC, Maeda N, Oyama R, Ravasi T, Lenhard B, Wells C, Kodzius R, Shimokawa K, Bajic VB, Brenner SE, Batalov S, Forrest ARR, Zavolan M, Davis MJ, Wilming LG, Aidinis V, Allen JE, Ambesi-Impiombato A, Apweiler R, Aturaliya RN, Bailey TL, Bansal M, Baxter L, Beisel KW, Bersano T, Bono H, Chalk AM, Chiu KP, Choudhary V, Christoffels A, Clutterbuck DR, Crowe ML, Dalla E, Dalrymple BP, de Bono B, Della Gatta G, di Bernardo D, Down T, Engstrom P, Fagiolini M, Faulkner G, Fletcher CF, Fukushima T, Furuno M, Futaki S, Gariboldi M, Georgii-Hemming P, Gingeras TR, Gojobori T, Green RE, Gustincich S, Harbers M, Hayashi Y, Hensch TK, Hirokawa N, Hill D, Huminiecki L, Iacono M, Ikeo K, Iwama A, Ishikawa T, Jakt M, Kanapin A, Katoh M, Kawasawa Y, Kelso J, Kitamura H, Kitano H, Kollias G, Krishnan SPT, Kruger A, Kummerfeld SK, Kurochkin IV, Lareau LF, Lazarevic D, Lipovich L, Liu J, Liuni S, McWilliam S, Madan Babu M, Madera M, Marchionni L, Matsuda H, Matsuzawa S, Miki H, Mignone F, Miyake S, Morris K, Mottagui-Tabar S, Mulder N, Nakano N, Nakauchi H, Ng P, Nilsson R, Nishiguchi S, Nishikawa S, Nori F, Ohara O, Okazaki Y, Orlando V, Pang KC, Pavan WJ, Pavesi G, Pesole G, Petrovsky N, Piazza S, Reed J, Reid JF, Ring BZ, Ringwald M, Rost B, Ruan Y, Salzberg SL, Sandelin A, Schneider C, Schönbach C, Sekiguchi K, Semple CAM, Seno S, Sessa L, Sheng Y, Shibata Y, Shimada H, Shimada K, Silva D, Sinclair B, Sperling S, Stupka E, Sugiura K, Sultana R, Takenaka Y, Taki K, Tammoja K, Tan SL, Tang S, Taylor MS, Tegner J, Teichmann SA, Ueda HR, van Nimwegen E, Verardo R, Wei CL, Yagi K, Yamanishi H, Zabarovsky E, Zhu S, Zimmer A, Hide W, Bult C, Grimmond SM, Teasdale RD, Liu ET, Brusic V, Quackenbush J, Wahlestedt C, Mattick JS, Hume DA, Kai C, Sasaki D, Tomaru Y, Fukuda S, Kanamori-Katayama M, Suzuki M, Aoki J, Arakawa T, Iida J, Imamura K, Itoh M, Kato T, Kawaji H, Kawagashira N, Kawashima T, Kojima M, Kondo S, Konno H, Nakano K, Ninomiya N, Nishio T, Okada M, Plessy C, Shibata K, Shiraki T, Suzuki S, Tagami M, Waki K, Watahiki A, Okamura-Oho Y, Suzuki H, Kawai J, Hayashizaki Y. The transcriptional landscape of the mammalian genome. Science 2005; 309:1559-63. [PMID: 16141072 DOI: 10.1126/science.1112014] [Citation(s) in RCA: 2607] [Impact Index Per Article: 137.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study describes comprehensive polling of transcription start and termination sites and analysis of previously unidentified full-length complementary DNAs derived from the mouse genome. We identify the 5' and 3' boundaries of 181,047 transcripts with extensive variation in transcripts arising from alternative promoter usage, splicing, and polyadenylation. There are 16,247 new mouse protein-coding transcripts, including 5154 encoding previously unidentified proteins. Genomic mapping of the transcriptome reveals transcriptional forests, with overlapping transcription on both strands, separated by deserts in which few transcripts are observed. The data provide a comprehensive platform for the comparative analysis of mammalian transcriptional regulation in differentiation and development.
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Kashii M, Yoshikawa H, Kitano H, Adachi H, Mori Y, Sasaki T, Takano K, Matsumura H, Inoue T, Murakami S, Masuhara H, Sugamoto K, Yoshikawa H. Femtosecond laser processing of protein crystals. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305088422] [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: 11/10/2022] Open
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Hiroi N, Funahashi A, Kitano H. Comparative studies of suppression of malignant cancer cell phenotype by antisense oligo DNA and small interfering RNA. Cancer Gene Ther 2005; 13:7-12. [PMID: 16082382 DOI: 10.1038/sj.cgt.7700869] [Citation(s) in RCA: 14] [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: 11/08/2022]
Abstract
One of the distinguishing features of malignant tumor cells is the ability to proliferate in an anchorage-independent manner; methods that effectively suppress this phenotype may be applicable to the therapeutic inhibition of the malignancy of cancers. Interfering RNA is a potentially powerful tool for cancer therapy because of its specificity of target selection and remarkably high efficiency in target mRNA suppression. We studied the use of two knockdown strategies, antisense oligo DNA (AS-ODN) and small interfering RNA (siRNA), and showed how the anchorage-independent proliferation of malignant cells could be blocked efficiently. Anchorage-independent proliferation of rat fibroblasts transformed with v-src was suppressed with only a single 1-microM dose of AS-ODN; similar suppression using siRNA required treatment with 1 nM siRNA every 12 h. With our experimental system, the molecular stability of AS-ODN allowed the use of a simple treatment regimen to control the amount of the target molecule, providing that the treatment dose was sufficiently high. In comparison, siRNA treatment was effective at lower doses, but more frequent treatment was necessary to achieve the same suppression of proliferation.
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Affiliation(s)
- N Hiroi
- ERATO-SORST, Kitano Symbiotic Systems Project, Japan Science and Technology Agency, Shibuya-ku, Tokyo.
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20
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Maeda A, Inoue Y, Kitano H, Savel'ev S, Okayasu S, Tsukada I, Nori F. Nanoscale friction: kinetic friction of magnetic flux quanta and charge density waves. Phys Rev Lett 2005; 94:077001. [PMID: 15783842 DOI: 10.1103/physrevlett.94.077001] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2004] [Indexed: 05/24/2023]
Abstract
In analogy with the standard macroscopic friction, here we present a comparative study of the friction force felt by moving vortices in superconductors and charge density waves. Using experiments and a model for this data, our observations (1) provide a link between friction at the micro- and macroscopic scales, (2) explain the roundness of the static-kinetic friction transition in terms of thermal fluctuations, particle interactions, and system size (critical-phenomena view), and (3) explain the crossing of the kinetic friction F(k) versus velocity V for our pristine (high density of very weak defects) and our irradiated samples (with lower density of deeper pinning defects).
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Affiliation(s)
- A Maeda
- Department of Basic Science, University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
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Takeuchi H, Yamamoto Y, Kitano H, Enomoto T. Changes in thymus- and activation-regulated chemokine (TARC) associated with allergen immunotherapy in patients with perennial allergic rhinitis. J Investig Allergol Clin Immunol 2005; 15:172-6. [PMID: 16261952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND Thymus- and activation-regulated chemokine (TARC), which is a CC chemokine receptor (CCR) 4 ligand with ability to recruit Th2 cells to inflammatory sites, is pathogenetically important in allergic rhinitis. Specific immunotherapy (IT), among the most effective therapies for allergic rhinitis, has incompletely understood mechanisms of action. TARC might be involved in some benefits of IT. METHODS TARC in sera was assayed, obtained from 50 patients with house dust mite allergic rhinitis before and 1 year after beginning IT. Their ages ranged from 6 to 34 years (mean, 10), 30 were male and 20 were female. RESULTS In patients whose nasal obstruction responded to IT, TARC decreased significantly with IT, while when response was defined in terms of sneezing or rhinorrhea, TARC did not change significantly. CONCLUSION TARC might be an important target of IT in reducing obstructive allergic rhinitis.
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MESH Headings
- Adolescent
- Adult
- Allergens/adverse effects
- Allergens/analysis
- Allergens/immunology
- Antigens, Dermatophagoides/adverse effects
- Antigens, Dermatophagoides/analysis
- Antigens, Dermatophagoides/immunology
- Chemokine CCL17
- Chemokines, CC/blood
- Chemokines, CC/immunology
- Child
- Desensitization, Immunologic
- Female
- Humans
- Immunoglobulin E/blood
- Immunoglobulin E/immunology
- Male
- Rhinitis, Allergic, Perennial/etiology
- Rhinitis, Allergic, Perennial/immunology
- Rhinitis, Allergic, Perennial/therapy
- Treatment Outcome
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Affiliation(s)
- H Takeuchi
- Division of Otorhinolaryngology, Head and Neck Surgery, Department of Medicine of Sensorimotor Organs, Faculty of Medicine, Tottori University, Yonago, Japan.
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Namisaki T, Yoshiji H, Fujimoto M, Kojima H, Yanase K, Kitade M, Ikenaka Y, Toyohara M, Yamao J, Tsujimoto T, Tsuruzono T, Kitano H, Matsumura K, Matsumura Y, Fukui H. Two cases of colonic tuberculosis presenting with massive melena. Int J Clin Pract 2004; 58:1162-4. [PMID: 15646415 DOI: 10.1111/j.1742-1241.2004.00361.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The clinical symptoms of colonic tuberculosis are variable, among which massive melena is extremely rare. Herein, we report two cases of colonic tuberculosis representing with massive melena, both of whom never had active pulmonary tuberculosis. The first case was a 55-year-old woman. Although her emergency colonoscopic setting suggested colonic tuberculosis, no evidence of tuberculosis could be found at that time. We performed a therapeutic trial and observed a drastic regression of the initial changes with 4-week treatment using antituberculous agents. The second case was a 37-year-old man. His emergency colonoscopy showed lesions mimicking colon carcinoma. However, the histological examinations did not indicate malignancy. The polymerase chain reaction of colonic biopsy specimen was positive for Mycobacterium tuberculosis. Similar to the first case, a significant improvement of the initial lesions was observed after 4-week treatment using antituberculous agents. Collectively, although the massive melena is a rare manifestation, tuberculosis of the colon should be suspected in the patients with such symptom.
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Affiliation(s)
- T Namisaki
- Third Department of Internal Medicine, Nara Medical University, Nara, Japan
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Kitano H, Nishimura H, Tachibana H, Yoshikawa H, Matsuyama T. ORP150 ameliorates ischemia/reperfusion injury from middle cerebral artery occlusion in mouse brain. Brain Res 2004; 1015:122-8. [PMID: 15223375 DOI: 10.1016/j.brainres.2004.04.058] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2004] [Indexed: 10/26/2022]
Abstract
The 150-kDa oxygen-regulated protein (ORP150), a novel stress protein localized to the endoplasmic reticulum (ER), is induced by hypoxia/ischemia. To determine the role of ORP150 in cerebral infarction following ischemia/reperfusion, ORP150 transgenic (TG) and knockout (KO) mice were subjected to 1 or 3 h of middle cerebral artery (MCA) occlusion followed by reperfusion for 24 h. At 24 h after 1 h of occlusion, significantly less infarct volume was evident in cerebral cortex, but not in striatum, in ORP150TG than ORP150KO mice (P<0.001). Infarct volume did not differ significantly between these groups at 24 h after 3 h of occlusion. Immunohistochemical reactivity for microtubule-associated protein (MAP)2 in the MCA territory was lost in ORP150KO mice at 24 h after 1 h of occlusion. In contrast, MAP2 staining still was present in the affected cortex of ORP150TG mice, where markedly enhanced ORP150 immunoreactivity was demonstrated. MAP2 staining had disappeared from the affected area at 24 h after 3 h of occlusion in both groups, but astrocytic ORP150 reactivity was preserved in the ORP150TG group. At 6 h after 1-h occlusion, when MAP2 staining was evident in the affected cortex, some cortical neurons of the TG mice were reactive for Bcl-xS/L. Thus, ORP150 may be cytoprotective against ischemia/reperfusion injury via reduction of ER stress and probably also inhibition of apoptosis.
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Affiliation(s)
- H Kitano
- Department of Internal Medicine, Division of Neurology and Stroke Care Unit, Hyogo College of Medicine, 1-1 Mukogawachou, Nishinomiya City, Hyogo, 663-8501, Japan.
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Hucka M, Finney A, Sauro HM, Bolouri H, Doyle JC, Kitano H, Arkin AP, Bornstein BJ, Bray D, Cornish-Bowden A, Cuellar AA, Dronov S, Gilles ED, Ginkel M, Gor V, Goryanin II, Hedley WJ, Hodgman TC, Hofmeyr JH, Hunter PJ, Juty NS, Kasberger JL, Kremling A, Kummer U, Le Novère N, Loew LM, Lucio D, Mendes P, Minch E, Mjolsness ED, Nakayama Y, Nelson MR, Nielsen PF, Sakurada T, Schaff JC, Shapiro BE, Shimizu TS, Spence HD, Stelling J, Takahashi K, Tomita M, Wagner J, Wang J. The systems biology markup language (SBML): a medium for representation and exchange of biochemical network models. Bioinformatics 2003; 19:524-31. [PMID: 12611808 DOI: 10.1093/bioinformatics/btg015] [Citation(s) in RCA: 1734] [Impact Index Per Article: 82.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
MOTIVATION Molecular biotechnology now makes it possible to build elaborate systems models, but the systems biology community needs information standards if models are to be shared, evaluated and developed cooperatively. RESULTS We summarize the Systems Biology Markup Language (SBML) Level 1, a free, open, XML-based format for representing biochemical reaction networks. SBML is a software-independent language for describing models common to research in many areas of computational biology, including cell signaling pathways, metabolic pathways, gene regulation, and others. AVAILABILITY The specification of SBML Level 1 is freely available from http://www.sbml.org/
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Affiliation(s)
- M Hucka
- Control and Dynamical Systems, MC 107-81, California Institute of Technology, Pasadena, CA 91125, USA.
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Abstract
We demonstrate UV generation in CSB3O5 (CBO) crystals grown by the top-seeded solution growth technique. 355-nm UV light was generated by use of a type II CBO crystal as a sum frequency of the fundamental light and the second harmonic of a nanosecond Nd:YVO4 laser. A 3.0-W output of the third-harmonic was obtained at a repetition rate of 31 kHz. The conversion efficiency from the fundamental light to the third harmonic reached 30%, which was 1.5 times higher than that obtained with a type II LiB3O5 crystal under the same experimental conditions.
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Affiliation(s)
- H Kitano
- Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Kitano H, Kitahara M. A critical study on the evaluation of the effect of treatment of Ménière's disease. Adv Otorhinolaryngol 2002; 30:362-4. [PMID: 12325224 DOI: 10.1159/000407675] [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: 11/19/2022]
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27
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Kitahara M, Takeda T, Matsubara H, Yazawa Y, Kitano H. Experimental and clinical studies on epidural drainage surgery. Adv Otorhinolaryngol 2002; 30:242-4. [PMID: 12325195 DOI: 10.1159/000407649] [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: 02/26/2023]
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28
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Sasaki A, Ashikari M, Ueguchi-Tanaka M, Itoh H, Nishimura A, Swapan D, Ishiyama K, Saito T, Kobayashi M, Khush GS, Kitano H, Matsuoka M. Green revolution: a mutant gibberellin-synthesis gene in rice. Nature 2002; 416:701-2. [PMID: 11961544 DOI: 10.1038/416701a] [Citation(s) in RCA: 697] [Impact Index Per Article: 31.7] [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: 11/08/2022]
Abstract
The chronic food shortage that was feared after the rapid expansion of the world population in the 1960s was averted largely by the development of a high-yielding semi-dwarf variety of rice known as IR8, the so-called rice 'green revolution'. The short stature of IR8 is due to a mutation in the plant's sd1 gene, and here we identify this gene as encoding an oxidase enzyme involved in the biosynthesis of gibberellin, a plant growth hormone. Gibberellin is also implicated in green-revolution varieties of wheat, but the reduced height of those crops is conferred by defects in the hormone's signalling pathway.
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Affiliation(s)
- A Sasaki
- Bioscience Center, Nagoya University, Nagoya 464-8601, Japan.
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29
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Kitano H, Matsuo R, Miwa K, Maeda A, Takenobu T, Iwasa Y, Mitani T. Evidence for insulating behavior in the electric conduction of (NH(3))K(3)C(60) systems. Phys Rev Lett 2002; 88:096401. [PMID: 11864035 DOI: 10.1103/physrevlett.88.096401] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2001] [Indexed: 05/23/2023]
Abstract
Microwave study using the cavity perturbation technique revealed that the conductivity of the antiferromagnet (NH(3))K(3-x)Rb(x)C(60) at 200 K is already 3-4 orders of magnitude smaller than those of superconductors, K(3)C(60) and (NH(3))(x)NaRb(2)C(60), and that the antiferromagnetic compounds are insulators below 250 K without metal-insulator transitions. The striking difference in the magnitude of the conductivity between these materials strongly suggests that the Mott-Hubbard transition in the ammoniated alkali fullerides is driven by a reduction of lattice symmetry from face-centered-cubic to face-centered-orthorhombic, rather than by the magnetic ordering.
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Affiliation(s)
- H Kitano
- Department of Basic Science, The University of Tokyo, Meguro-ku, Tokyo 153-8902, Japan
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Kyoda KM, Morohashi M, Onami S, Kitano H. A gene network inference method from continuous-value gene expression data of wild-type and mutants. Genome Inform Ser Workshop Genome Inform 2002; 11:196-204. [PMID: 11700600] [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: 02/22/2023]
Abstract
In this paper we introduce a new inference method of a gene regulatory network from steady-state gene expression data. Our method determines a regulatory structure consistent with an observed set of steady-state expression profiles, each generated from wild-type and single deletion mutant of the target network. Our method derives the regulatory relationships in the network using a graph theoretic approach. The advantage of our method is to be able to deal with continuous values of steady-state data, while most of the methods proposed in past use a Boolean network model with binary data. Performance of our method is evaluated on simulated networks with varying the size of networks, indegree of each gene, and the data characteristics (continuous-value/binary), and is compared with that of predictor method proposed by Ideker et al. As a result, we show the superiority of using continuous values to binary values, and the performance of our method is much better than that of the predictor method.
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Affiliation(s)
- K M Kyoda
- Kitano Symbiotic Systems Project, ERATO, JST., M31 6A, 6-31-15 Jingumae, Shibuya-ku, Tokyo 150-0001, Japan.
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Hucka M, Finney A, Sauro HM, Bolouri H, Doyle J, Kitano H. The ERATO Systems Biology Workbench: enabling interaction and exchange between software tools for computational biology. Pac Symp Biocomput 2002:450-61. [PMID: 11928498 DOI: 10.1142/9789812799623_0042] [Citation(s) in RCA: 20] [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: 04/18/2023]
Abstract
Researchers in computational biology today make use of a large number of different software packages for modeling, analysis, and data manipulation and visualization. In this paper, we describe the ERATO Systems Biology Workbench (SBW), a software framework that allows these heterogeneous application components--written in diverse programming languages and running on different platforms--to communicate and use each others' data and algorithmic capabilities. Our goal is to create a simple, open-source software infrastructure which is effective, easy to implement and easy to understand. SBW uses a broker-based architecture and enables applications (potentially running on separate, distributed computers) to communicate via a simple network protocol. The interfaces to the system are encapsulated in client-side libraries that we provide for different programming languages. We describe the SBW architecture and the current set of modules, as well as alternative implementation technologies.
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Affiliation(s)
- M Hucka
- Control and Dynamical Systems, 107-81, California Institute of Technology, CA 91125, USA
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Kitano H, Fujimura M, Kinoshita T, Kataoka H, Hirano M, Kitajima K. Endoscopic thyroid resection using cutaneous elevation in lieu of insufflation. Surg Endosc 2002; 16:88-91. [PMID: 11961612 DOI: 10.1007/s004640080197] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2001] [Accepted: 06/18/2001] [Indexed: 11/25/2022]
Abstract
BACKGROUND Laparoscopic surgery to resect cervical masses has gained increasing acceptance during the past decade. This report describes the authors' technique and experience using total video endoscopic surgery to resect thyroid masses. METHODS The video camera is introduced through a 12-mm trocar inserted via a 10-mm infraclavicular incision in the sternal line. This incision will be hidden by the patient's undergarments postoperatively. An incision for a 12-mm trocar is made in each axilla, with additional incisions in the anterior chest made as necessary for the endoscope and instruments. Excellent exposure is produced by elevating the skin with hooks rather than by using carbon dioxide insufflation. This method reduces the incidence of subcutaneous emphysema and pneumomediastinum. RESULTS Twenty-two thyroid lesions were resected using total video endoscopic surgery (adenoma, 13; cancer, 5; benign cyst, 3; and Graves' disease, 1). Procedures included thyroidectomy (12), thyroidectomy and isthmusectomy (4), and subtotal thyroidectomy (2). Subtotal cervical adenectomy was performed in 3 patients with papillary carcinoma. Cosmetic results were excellent. CONCLUSION Endoscopic surgery of the neck is safe, minimally invasive, and produces excellent cosmetic results. However, it is in an early stage of development. Techniques have yet to be standardized, and specialized instruments are not available. The field is likely to mature as surgeons gain more experience.
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Affiliation(s)
- H Kitano
- Department of Otolaryngology, Head and Neck Surgery, Shiga University of Medical Science, Seta, Otsu, Shiga 520-2192, Japan.
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Suzuki M, Kitano H, Ito R, Kitanishi T, Yazawa Y, Ogawa T, Shiino A, Kitajima K. Cortical and subcortical vestibular response to caloric stimulation detected by functional magnetic resonance imaging. Brain Res Cogn Brain Res 2001; 12:441-9. [PMID: 11689304 DOI: 10.1016/s0926-6410(01)00080-5] [Citation(s) in RCA: 164] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The posterior insula, central sulcus, and inferior parietal lobule including the intraparietal sulcus have been considered the vestibular cortex based on functional brain mapping in humans as well as experiments in lower primates. The same regions receive optokinetic, visual, and proprioceptive projections. We examined the cortical and subcortical projection of vestibular activity with visual and proprioceptive input eliminated during caloric stimulation (CS), using functional magnetic resonance imaging (fMRI). Single-shot gradient-echo echoplanar image (EPI) volumes were sensitive to BOLD contrast in oblique orientation. We adopted a pharmacokinetic model for analysis of imaging data from 10 subjects as a group. The insular gyrus, intraparietal sulcus, superior temporal gyrus, hippocampus, cingulate gyrus, and thalamus showed activation by CS. Cortical and subcortical activation during CS in the present study was observed within regions less precisely delineated by other methods. As intraparietal sulcus activation showed right hemispheric dominance, this region may have an oculomotor projection as well as the vestibular input.
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Affiliation(s)
- M Suzuki
- Department of Otolaryngology, Shiga University of Medical Science, Seta, Shiga 520-2192, Otsu, Japan.
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34
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Yamamoto M, Tsuji M, Yamada K, Taniguchi H, Kim YH, Fukuda K, Kokufu I, Yano T, Kitano H, Kadone K. Cyst fluid levels of carcinoembryonic antigen, carbohydrate antigen 19-9, squamous cell carcinoma antigen, and amylase in thyroglossal duct and branchial cleft cysts. Surg Today 2001; 31:477-81. [PMID: 11428596 DOI: 10.1007/s005950170104] [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: 10/27/2022]
Abstract
Cyst fluid was aspirated from five thyroglossal duct cysts (TDCs) and four branchial cleft cysts (BCCs). The cyst fluid levels of carcinoembryonic antigen (CEA), carbohydrate antigen (CA) 19-9, squamous cell carcinoma antigen (SCC), and amylase were measured and compared between the two types of cyst. The enzyme immunoassay technique was used for CEA and CA19-9, while SCC and amylase levels were measured by the immunoradiometric assay and nitrophenol method, respectively. Immunostaining for CEA, CA19-9, and amylase was also performed. The serum levels of these markers in both groups of patients were within the normal ranges. In contrast, their cyst fluid levels were extremely high. There was no significant difference in the cyst fluid levels of CEA and SCC between the two types of cyst; however, the cyst fluid from the TDCs showed significantly higher levels of CA19-9 and significantly lower levels of amylase compared with that from the BCCs. Immunostaining revealed expression of CA 19-9 in nearly half the columnar epithelial cells in the TDCs, but not in the squamous epithelial cells in the BCCs. CEA and amylase were not found in the epithelial cells of either type of cyst. These findings seem to reflect the difference in etiology between TDCs and BCCs.
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Affiliation(s)
- M Yamamoto
- Department of Surgery, Itami City Hospital, Hyogo, Japan
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Kokufu I, Taniguchi H, Kim Y, Fukuda K, Yamamoto M, Yano T, Yamada K, Kitano H. [Two cases of effective weekly paclitaxel administration for metastatic breast cancer]. Gan To Kagaku Ryoho 2001; 28:1905-8. [PMID: 11729485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
We report two cases of effective weekly paclitaxel (TXL) administration for metastatic breast cancer. TXL (80 mg/m2) was infused over 1 hour after short premedication on an outpatient basis. Administration was continued for 3 weeks followed by 1 week rest. Case 1: A 66-year-old woman was treated with adriamycin, cyclophosphamide, doxifluridine (5'-DFUR), fadrozole, medroxyprogesterone acetate (MPA) and pamidronate for pleural, mediastinal and supraclavicular lymph nodes and skull metastases. She complained of hoarseness and supraclavicular and mediastinal lymph nodes had developed, for which she received weekly TXL administration. Metastatic lymph nodes had disappeared 3 months after administration. Case 2: A 61-year-old woman was treated with CMF therapy, 5'-DFUR, tamoxifen, MPA fadrozole and pamidronate for bone metastasis and local recurrence. She received weekly TXL administration for an axillary recurrence and contralateral supraclavicular lymph node metastases. Metastatic and recurrent lesions had disappeared 3 months after administration. The toxic events were leukopenia (grade 1) and peripheral neuropathy (grade 1). No major adverse effects were observed in either case.
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Affiliation(s)
- I Kokufu
- Dept. of Surgery, Itami City Hospital
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Abstract
In the synthesis of 18F-FDG by the nucleophilic substitution method, 18O-H2O is usually used as target water. The target water should be recovered after synthesis and reused, because it is expensive, but recovered water contains impurities such as organic substances, and it must be purified before reuse. For this reason Sumitomo Heavy Industries, Ltd. developed an O-18 water purifier for elimination of organic substances in recovered water. This instrument consists of a UV irradiation unit and low-temperature distillation unit. Our institution had an opportunity to test use this instrument and evaluated its performance. The concentrations of organic substances after UV irradiation was greatly reduced, and recovery efficiency after distillation by the low-temperature distillation unit was very satisfactory at 99.3 +/- 0.5%. Furthermore, the yield of 18F-FDG from 18O-H20 purified with this instrument was sufficient for the clinical use.
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Affiliation(s)
- H Kitano
- Department of Nuclear Medicine and Diagnostic Imaging, Graduate School of Medicine, Kyoto University, Japan
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37
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Yamana T, Kitano H, Hanamitsu M, Kitajima K. Clinical outcome of laryngotracheal separation for intractable aspiration pneumonia. ORL J Otorhinolaryngol Relat Spec 2001; 63:321-4. [PMID: 11528278 DOI: 10.1159/000055766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To confirm that laryngotracheal separation (LTS) is a satisfactory treatment for patients with intractable aspiration pneumonia, even though it does not require tracheoesophageal anastomosis. STUDY DESIGN Retrospective. METHODS Nine patients with intractable aspiration pneumonia underwent LTS at our institution from 1996 to 1999. Two patients underwent postoperative barium swallow radiography. RESULTS Neither halitosis nor stimulation of the cough reflex occurred due to pooled secretions in the blind pouch of the proximal tracheal segment. Barium swallow radiography confirmed that the secretions drained within 40 min by swallowing or a change in patient position. CONCLUSION LTS is a satisfactory solution to the problem of chronic aspiration. Neither pooled secretions in the proximal tracheal segment nor fistula formation were significant postoperative problems.
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Affiliation(s)
- T Yamana
- Department of Otolaryngology, Head and Neck Surgery, Shiga University of Medical Science, Otsu, Japan.
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Nakajima Y, Okamoto M, Nishimura H, Obata K, Kitano H, Sugita M, Matsuyama T. Neuronal expression of mint1 and mint2, novel multimodular proteins, in adult murine brain. Brain Res Mol Brain Res 2001; 92:27-42. [PMID: 11483239 DOI: 10.1016/s0169-328x(01)00126-7] [Citation(s) in RCA: 25] [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: 10/17/2022]
Abstract
Mints are multimodular adapter proteins in functioning membrane transport and organization. Mint1 and mint2 are neuron-specific. We localized these isoforms in mouse brain. By in situ hybridization, mRNA encoding mint1 or mint2 was expressed in neurons throughout the brain. Mint1 mRNA expression was greatest in the limbic system including cingulate cortex, hippocampus, anterior thalamic nuclei, medial habenular nucleus, and mammillary body. Mint2 mRNA was rich in cerebral cortex, entorhinal cortex, and hippocampus, but less prominent in other limbic structures. Mint1 mRNA and mint2 mRNA were distributed among hippocampal pyramidal neurons, while mint2 mRNA was especially abundant in CA3. Mint1, but not Mint2 mRNA was abundant in the substantia nigra pars compacta. Immunohistochemistry visualized mint proteins in axon terminals and neuronal somata, generally following mRNA distribution. In the hippocampus, mint1 was rich in the entorhinal projections and mossy fibers of the dentate gyrus, while mint2 was rich in commisural fibers from the contralateral hippocampus and in CA1. Mint1 intensely stained catecholamine-containing neurons such as the substantia nigra pars compacta, ventral tegmental area, and locus ceruleus. Mint2 protein was ubiquitous in these regions. Mint1 and mint2 distribution also differed elsewhere in the brainstem and in the cerebellum. Central nervous system neurons, then, predominantly express either mint1 or mint2. Mints may be involved in synaptic vesicle transport toward the active zone, also participating in transport of certain membrane proteins toward the postsynaptic density. Mint1 and mint2 may divide roles either regionally or depending on neuronal functional characteristics.
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Affiliation(s)
- Y Nakajima
- Department of Internal Medicine, Hyogo College of Medicine, 1-1 Mukogawacho, Nishinomiya 663-8501, Japan
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Itoh H, Ueguchi-Tanaka M, Sentoku N, Kitano H, Matsuoka M, Kobayashi M. Cloning and functional analysis of two gibberellin 3 beta -hydroxylase genes that are differently expressed during the growth of rice. Proc Natl Acad Sci U S A 2001; 98:8909-14. [PMID: 11438692 PMCID: PMC37534 DOI: 10.1073/pnas.141239398] [Citation(s) in RCA: 178] [Impact Index Per Article: 7.7] [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: 11/18/2022] Open
Abstract
We have cloned two gibberellin (GA) 3 beta-hydroxylase genes, OsGA3ox1 and OsGA3ox2, from rice by screening a genomic library with a DNA fragment obtained by PCR using degenerate primers. We have used full-scan GC-MS and Kovats retention indices to show function for the two encoded recombinant fusion proteins. Both proteins show 3 beta-hydroxylase activity for the steps GA(20) to GA(1), GA(5) to GA(3), GA(44) to GA(38), and GA(9) to GA(4). In addition, indirect evidence suggests that the OsGA3ox1 protein also has 2,3-desaturase activity, which catalyzes the steps GA(9) to 2,3-dehydro-GA(9) and GA(20) to GA(5) (2,3-dehydro GA(20)), and 2 beta-hydroxylase activity, which catalyzes the steps GA(1) to GA(8) and GA(4) to GA(34). Molecular and linkage analysis maps the OsGA3ox1 gene to the distal end of the short arm of chromosome 5; the OsGA3ox2 gene maps to the distal end of the short arm of chromosome 1 that corresponds to the D18 locus. The association of the OsGA3ox2 gene with the d18 locus is confirmed by sequence and complementation analysis of three d18 alleles. Complementation of the d18-AD allele with the OxGA3ox2 gene results in transgenic plants with a normal phenotype. Although both genes show transient expression, the highest level for OsGA3ox1 is from unopened flower. The highest level for OsGA3ox2 is from elongating leaves.
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Affiliation(s)
- H Itoh
- Bioscience Center, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
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40
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Abstract
A mechanism for generating circadian rhythms has been of major interest in recent years. After the discovery of per and tim, a model with a simple feedback loop involving per and tim has been proposed. However, it is recognized that the simple feedback model cannot account for phenotypes generated by various mutants. A recent report by Glossop, Lyons & Hardin [Science286, 766 (1999)] on Drosophila suggests involvement of another feedback loop by dClk that is interlocked with per-tim feedback loop. In order to examine whether interlocked feedback loops can be a basic mechanism for circadian rhythms, a mathematical model was created and examined. Through extensive simulation and mathematical analysis, it was revealed that the interlocked feedback model accounts for the observations that are not explained by the simple feedback model. Moreover, the interlocked feedback model has robust properties in oscillations.
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Affiliation(s)
- H R Ueda
- ERATO Kitano Symbiotic Systems Group, Suite 6A, M31, 6-31-15 Jinguumae, Shibuya, Tokyo, 150-0001, Japan.
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41
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Affiliation(s)
- T Yamana
- Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, Japan
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42
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Ikeda A, Ueguchi-Tanaka M, Sonoda Y, Kitano H, Koshioka M, Futsuhara Y, Matsuoka M, Yamaguchi J. slender rice, a constitutive gibberellin response mutant, is caused by a null mutation of the SLR1 gene, an ortholog of the height-regulating gene GAI/RGA/RHT/D8. Plant Cell 2001; 13:999-1010. [PMID: 11340177 PMCID: PMC135552 DOI: 10.1105/tpc.13.5.999] [Citation(s) in RCA: 473] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2000] [Accepted: 03/07/2001] [Indexed: 05/18/2023]
Abstract
The rice slender mutant (slr1-1) is caused by a single recessive mutation and results in a constitutive gibberellin (GA) response phenotype. The mutant elongates as if saturated with GAs. In this mutant, (1) elongation was unaffected by an inhibitor of GA biosynthesis, (2) GA-inducible alpha-amylase was produced by the aleurone layers without gibberellic acid application, and (3) endogenous GA content was lower than in the wild-type plant. These results indicate that the product of the SLR1 gene is an intermediate of the GA signal transduction pathway. SLR1 maps to OsGAI in rice and has significant homology with height-regulating genes, such as RHT-1Da in wheat, D8 in maize, and GAI and RGA in Arabidopsis. The GAI gene family is likely to encode transcriptional factors belonging to the GRAS gene superfamily. DNA sequence analysis revealed that the slr1-1 mutation is a single basepair deletion of the nuclear localization signal domain, resulting in a frameshift mutation that abolishes protein production. Furthermore, introduction of a 6-kb genomic DNA fragment containing the wild-type SLR1 gene into the slr1-1 mutant restored GA sensitivity to normal. These results indicate that the slr1-1 mutant is caused by a loss-of-function mutation of the SLR1 gene, which is an ortholog of GAI, RGA, RHT, and D8. We also succeeded in producing GA-insensitive dwarf rice by transforming wild-type rice with a modified SLR1 gene construct that has a 17-amino acid deletion affecting the DELLA region. Thus, we demonstrate opposite GA response phenotypes depending on the type of mutations in SLR1.
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Affiliation(s)
- A Ikeda
- BioScience Center and Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
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Kitano H, Murakami M, Kawata Y, Egami C, Sugihara O, Okamoto N, Tsuchimori M, Watanabe O. Non-optically probing near-field microscopy with illumination of total internal reflection. J Microsc 2001; 202:162-71. [PMID: 11298887 DOI: 10.1046/j.1365-2818.2001.00812.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We have developed a non-optically probing near-field microscope with illumination of total internal reflection. Because the illumination light does not pass through the specimens, it is possible to observe thick specimens or highly absorptive materials. It reduces the background noise because the decay length of the evanescent wave is a few hundred nanometres. We found that although in the total internal reflection illumination system the light passed through the photosensitive film and illuminated the specimen, it did not affect the photosensitive film severely and did not limit the resolution. The imaging properties of reflection illumination and transmission illumination are analysed using a finite-differential time domain method.
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Affiliation(s)
- H Kitano
- Faculty of Engineering, Shizuoka University, Johoku, Hamamatsu 432-8561 Japan
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Nakatani Y, Fukui H, Kitano H, Nagamoto I, Tsujimoto T, Kuriyama S, Kikuchi E, Hoppou K, Tsujii T. Endotoxin clearance and its relation to hepatic and renal disturbances in rats with liver cirrhosis. Liver 2001; 21:64-70. [PMID: 11169075 DOI: 10.1034/j.1600-0676.2001.210110.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND/AIMS Little is known about endotoxin clearance and secretion of cytokines from macrophages in liver cirrhosis. The aims of this study were to investigate the relationship of endotoxin clearance and release of tumor necrosis factor alpha by various macrophages to hepatic and renal disturbances in liver cirrhosis. METHODS Male Sprague-Dawley rats were given 0.04% thioacetamide orally for 6 or 12 months. The organ distribution of infused [3H]-endotoxin (10 microg/kg b.w.) was analyzed at 30 min or at 24 h. Uptake of [3H]-endotoxin and secretion of tumor necrosis factor alpha by Kupffer cells, splenic macrophages and peripheral blood monocytes (1 x 10(4) cells/ml) from cirrhotic and control rats were determined. RESULTS In cirrhotic rats, more endotoxin was left in the body and more endotoxin accumulated in the spleen and kidney, and thus was related to elevation of serum total bilirubin, aspartate aminotransferase, alanine aminotransferase, blood urea nitrogen, creatinine and tumor necrosis factor alpha. Endotoxin uptake and tumor necrosis factor alpha release by the Kupffer cells were decreased and those by the splenic macrophages and peripheral blood monocytes were increased in cirrhotic rats. CONCLUSIONS In liver cirrhosis, impaired clearance of endotoxin together with increased secretion of tumor necrosis factor alpha by extrahepatic macrophages may play an important role in the progression of hepatic and renal disturbances.
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Affiliation(s)
- Y Nakatani
- Third Department of Internal Medicine, Nara Medical University, Kashihara, Japan.
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Abstract
A lipid-polypeptide conjugate (lipo-polypeptide) was obtained by the ring-opening polycondensation of N-epsilon-Z-L-lysine N-carboxyanhydride (NCA) using 3-aminopropyl dioctadecylamine as initiator and subsequent deprotection. Maltose lactone was coupled with the lipo-polypeptide to give novel amphiphiles which carried many maltoamide residues as pendent groups. The sugar group-carrying amphiphiles incorporated in phospholipid liposomes were recognized by a lectin from Canavalia ensiformis (Con A), which was proven by the increase in turbidity of the liposome suspension after mixing with the lectin. The recognition was largely affected by the degree of polymerization of lysine residues and the surface density of the amphiphile in the liposomes. The association constant (K(ass)) of Con A with maltoamide residues on the liposome was much larger than those for small molecular weight sugars due to the "cluster effect".
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Affiliation(s)
- H Kitano
- Department of Chemical and Biochemical Engineering, Toyama University, Toyama 930-8555, Japan.
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Kitano H, Fujimura M, Hirano M, Sato I, Kataoka H, Kinoshita T, Ogawa T, Masuda S, Kitajima K. Endoscopic surgery for lateral cervical cysts. A report of three cases. Surg Endosc 2000; 14:1086. [PMID: 11285530 DOI: 10.1007/s004640040006] [Citation(s) in RCA: 13] [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] [Received: 01/22/2000] [Accepted: 05/14/2000] [Indexed: 11/25/2022]
Abstract
Recently, endoscopic surgery has been applied to cervical exploration. We have developed new techniques for endoscopic neck surgery, and in this paper report our experience with three patients with lateral cervical cysts. A 5- or 10-mm midline trocar for the endoscope and two 5- or 10-mm lateral trocars were inserted from the anterior chest wall and/or both axillary fossae to avoid neck scars. There were no intraoperative complications. Slight subcutaneus emphysema was present postoperatively, but it was limited to the neck and disappeared in a few days. The incisions were completely covered by the patients' undergarments. This is the first report of endoscopic lateral cervical cystectomy.
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Affiliation(s)
- H Kitano
- Department of Otolaryngology, Head and Neck Surgery, Shiga University of Medical Science, Seta, Otsu, Shiga 520-2192, Japan.
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Itoh JI, Kitano H, Matsuoka M, Nagato Y. Shoot organization genes regulate shoot apical meristem organization and the pattern of leaf primordium initiation in rice. Plant Cell 2000; 12:2161-74. [PMID: 11090216 PMCID: PMC150165 DOI: 10.1105/tpc.12.11.2161] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2000] [Accepted: 09/01/2000] [Indexed: 05/18/2023]
Abstract
The mechanism regulating the pattern of leaf initiation was analyzed by using shoot organization (sho) mutants derived from three loci (SHO1, SHO2, and SHO3). In the early vegetative phase, sho mutants show an increased rate of leaf production with random phyllotaxy. The resulting leaves are malformed, threadlike, or short and narrow. Their shoot apical meristems are relatively low and wide, that is, flat shaped, although their shape and size are highly variable among plants of the same genotype. Statistical analysis reveals that the shape of the shoot meristem rather than its size is closely correlated with the variations of plastochron and phyllotaxy. Rapid and random leaf production in sho mutants is correlated with the frequent and disorganized cell divisions in the shoot meristem and with a reduction of expression domain of a rice homeobox gene, OSH1. These changes in the organization and behavior of the shoot apical meristems suggest that sho mutants have fewer indeterminate cells and more determinate cells than wild type, with many cells acting as leaf founder cells. Thus, the SHO genes have an important role in maintaining the proper organization of the shoot apical meristem, which is essential for the normal initiation pattern of leaf primordia.
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Affiliation(s)
- J I Itoh
- Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo 113-8657, Japan
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Togawa Y, Abiru R, Iwaya K, Kitano H, Maeda A. Direct observation of the washboard noise of a driven vortex lattice in a high-temperature superconductor, Bi2Sr2CaCu2O(y). Phys Rev Lett 2000; 85:3716-3719. [PMID: 11030989 DOI: 10.1103/physrevlett.85.3716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/1999] [Indexed: 05/23/2023]
Abstract
We studied the conduction noise spectrum in the vortex state of a high-temperature superconductor, Bi(2)Sr(2)CaCu(2)O(y), subject to a uniform driving force. Two characteristic features, a broad-band noise (BBN) and a narrow-band noise (NBN), were observed in the vortex-solid phase. The origin of the large BBN was determined to be plastic motion of the vortices, whereas the NBN was found to originate from the washboard modulation of the translational velocity of the driven vortices. We believe this to be the first observation of washboard noise of dc driven vortices in any superconductor.
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Affiliation(s)
- Y Togawa
- Department of Basic Science, The University of Tokyo, 3-8-1, Komaba, Meguro-ku, Tokyo, 153-8902, Japan
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Ueguchi-Tanaka M, Fujisawa Y, Kobayashi M, Ashikari M, Iwasaki Y, Kitano H, Matsuoka M. Rice dwarf mutant d1, which is defective in the alpha subunit of the heterotrimeric G protein, affects gibberellin signal transduction. Proc Natl Acad Sci U S A 2000; 97:11638-43. [PMID: 11027362 PMCID: PMC17253 DOI: 10.1073/pnas.97.21.11638] [Citation(s) in RCA: 295] [Impact Index Per Article: 12.3] [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: 11/18/2022] Open
Abstract
Previously, we reported that the rice dwarf mutant, d1, is defective in the alpha subunit of the heterotrimeric G protein (Galpha). In the present study, gibberellin (GA) signaling in d1 and the role of the Galpha protein in the GA-signaling pathway were investigated. Compared with the wild type, GA induction of alpha-amylase activity in aleurone cells of d1 was greatly reduced. Relative to the wild type, the GA(3)-treated aleurone layer of d1 had lower expression of Ramy1A, which encodes alpha-amylase, and OsGAMYB, which encodes a GA-inducible transcriptional factor, and no increase in expression of Ca(2 +)-ATPase. However, in the presence of high GA concentrations, alpha-amylase induction occurred even in d1. The GA sensitivity of second leaf sheath elongation in d1 was similar to that of the wild type in terms of dose responsiveness, but the response of internode elongation to GA was much lower in d1. Furthermore, Os20ox expression was up-regulated, and the GA content was elevated in the stunted internodes of d1. All these results suggest that d1 affects a part of the GA-signaling pathway, namely the induction of alpha-amylase in the aleurone layer and internode elongation. In addition, a double mutant between d1 and another GA-signaling mutant, slr, revealed that SLR is epistatic to the D1, supporting that the Galpha protein is involved in GA signaling. However, the data also provide evidence for the presence of an alternative GA-signaling pathway that does not involve the Galpha protein. It is proposed that GA signaling via the Galpha protein may be more sensitive than that of the alternative pathway, as indicated by the low GA responsiveness of this Galpha-independent pathway.
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Affiliation(s)
- M Ueguchi-Tanaka
- Bioscience Center and Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan
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Kitano H, Fujimura M, Hirano M, Kataoka H, Kinoshita T, Seno S, Kitajima K. Endoscopic surgery for a parathyroid functioning adenoma resection with the neck region-lifting method. Otolaryngol Head Neck Surg 2000; 123:465-6. [PMID: 11020187 DOI: 10.1067/mhn.2000.105183] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recently, endoscopic surgery has been applied to cervical exploration. We have developed new techniques for endoscopic neck surgery. We reported on a 53-year-old Japanese man with functioning parathyroid adenoma resected by endoscopic surgery with a neck region-lifting method. A 10-mm midline trocar for the endoscope and two 5-mm lateral trocars were inserted from the anterior chest wall to avoid neck scars. There were no intraoperative complications. The incisions were completely covered by the patient's undergarments.
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Affiliation(s)
- H Kitano
- Department of Otolaryngology-Head and Neck Surgery, Shiga University of Medical Science, Otsu, Japan
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