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Tamamizu K, Sakamoto T, Kurashige Y, Nozue S, Kumazaki S. Scytonemin redox status in a filamentous cyanobacterium visualized by an excitation-laser-line-scanning spontaneous Raman scattering spectral microscope. Spectrochim Acta A Mol Biomol Spectrosc 2023; 290:122258. [PMID: 36571864 DOI: 10.1016/j.saa.2022.122258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/05/2022] [Accepted: 12/16/2022] [Indexed: 06/18/2023]
Abstract
Some cyanobacteria produce a UVA-absorbing pigment, scytonemin, at extracellular sheaths. Although scytonemin-containing dark sheaths are recognizable through optical microscopes and its redox changes have been known for decades, there has been no report to obtain images of both oxidized and reduced scytonemins at subcellular resolution. Here, we show that a spontaneous Raman scattering spectral microscopy based on an excitation-laser-line-scanning method unveil 3D subcellular distributions of both the oxidized and reduced scytonemins in a filamentous cyanobacterium. The redox changes of scytonemin were supported by comparison in the Raman spectra between the cyanobacterial cells, solid-state scytonemin and quantum chemical normal mode analysis. Distributions of carotenoids, phycobilins, and the two redox forms of scytonemin were simultaneously visualized with an excitation wavelength at 1064 nm that is virtually free from the optical screening by the dark sheaths. The redox differentiation of scytonemin will advance our understanding of the redox homeostasis and secretion mechanisms of individual cyanobacteria as well as microscopic chemical environments in various microbial communities. The line-scanning Raman microscopy based on the 1064 nm excitation is thus a promising tool for exploring hitherto unreported Raman spectral features and distribution of nonfluorescent molecules embedded below nontransparent layers for visible light, while avoiding interference by autofluorescence.
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Affiliation(s)
- Kouto Tamamizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Toshio Sakamoto
- School of Biological Science and Technology, College of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Yuki Kurashige
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shuho Nozue
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan.
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Nozue H, Shigarami T, Fukuda S, Chino T, Saruta R, Shirai K, Nozue M, Kumazaki S. Growth-phase dependent morphological alteration in higher plant thylakoid is accompanied by changes in both photodamage and repair rates. Physiol Plant 2021; 172:1983-1996. [PMID: 33786842 DOI: 10.1111/ppl.13408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 02/18/2021] [Accepted: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Thylakoid membranes of young leaves consist of grana and stroma lamellae (stroma-grana [SG] structure). The SG thylakoid is gradually converted into isolated grana (IG), almost lacking the stroma lamellae during growth. This morphological alteration was found to cause a reduction in maximum photosynthetic rate and an enhancement of photoinhibition in photosystem II (PSII). In situ microspectrometric measurements of chlorophyll fluorescence in individual chloroplasts suggested an increase of the PSII/PSI ratio in IG thylakoids of mature leaves. Western blot analysis of isolated IG thylakoids showed relative increases in some PSII components, including the core protein (D1) and light-harvesting components CP24 and Lhcb2. Notably, a nonphotochemical quenching-related factor in the PSII supercomplex, PsbS, decreased by 40%. Changes in the high light response of PSII were detected through parameters of pulse-amplitude modulation fluorometry. Chlorophyll fluorescence lifetime indicated an increase of fluorescence quantum yield in IG. A minimal photodamage-repair rate analysis on a lincomycin treatment of the leaves indicated that repair rate constant of IG is slower than that of SG, while photodamage rate of IG is higher than that of SG. These results suggest that IG thylakoids are relatively sensitive to high light, which is not only due to a higher photodamage rate caused by some rearrangements of PS complexes, but also to the retarded PSII repair that may result from the lack of stroma lamellae. The IG thylakoids found among many plant species thus seem to be an adaptive form to low light environments, although their physiological roles still remain unclear.
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Affiliation(s)
- Hatsumi Nozue
- Research Center for Advanced Plant Factory (SU-PLAF), Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Takashi Shigarami
- Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Shinji Fukuda
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan
| | - Takayuki Chino
- Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Ryouta Saruta
- Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Kana Shirai
- Research Center for Advanced Plant Factory (SU-PLAF), Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Masayuki Nozue
- Research Center for Advanced Plant Factory (SU-PLAF), Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
- Faculty of Textile Science and Technology, Shinshu University, Nagano, Japan
| | - Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan
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Tamamizu K, Kumazaki S. Spectral microscopic imaging of heterocysts and vegetative cells in two filamentous cyanobacteria based on spontaneous Raman scattering and photoluminescence by 976 nm excitation. Biochim Biophys Acta Bioenerg 2018; 1860:78-88. [PMID: 30414930 DOI: 10.1016/j.bbabio.2018.11.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/30/2018] [Accepted: 11/07/2018] [Indexed: 11/29/2022]
Abstract
Photosynthetic pigment-protein complexes are highly concentrated in thylakoid membranes of chloroplasts and cyanobacteria that emit strong autofluorescence (mainly 600-800 nm). In Raman scattering microscopy that enables imaging of pigment concentrations of thylakoid membranes, near infrared laser excitation at 1064 nm or visible laser excitation at 488-532 nm has been often employed in order to avoid the autofluorescence. Here we explored a new approach to Raman imaging of thylakoid membranes by using excitation wavelength of 976 nm. Two types of differentiated cells, heterocysts and vegetative cells, in two diazotrophic filamentous cyanobacteria, Anabaena variabilis, and Rivularia M-261, were characterized. Relative Raman scattering intensities of phycobilisomes of the heterocyst in comparison with the nearest vegetative cells of Rivularia remained at a significantly higher level than those of A. variabilis. It was also found that the 976 nm excitation induces photoluminescence around 1017-1175 nm from the two cyanobacteria, green alga (Parachlorella kessleri) and plant (Arabidopsis thaliana). We propose that this photoluminescence can be used as an index of concentration of chlorophyll a that has relatively small Raman scattering cross-sections. The Rivularia heterocysts that we analyzed were clearly classified into at least two subgroups based on the Chla-associated photoluminescence and carotenoid Raman bands, indicating two physiologically distinct states in the development or aging of the terminal heterocyst.
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Affiliation(s)
- Kouto Tamamizu
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
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Nozue S, Katayama M, Terazima M, Kumazaki S. Comparative study of thylakoid membranes in terminal heterocysts and vegetative cells from two cyanobacteria, Rivularia M-261 and Anabaena variabilis, by fluorescence and absorption spectral microscopy. Biochimica et Biophysica Acta (BBA) - Bioenergetics 2017; 1858:742-749. [DOI: 10.1016/j.bbabio.2017.05.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/15/2017] [Accepted: 05/17/2017] [Indexed: 10/19/2022]
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Nozue S, Mukuno A, Tsuda Y, Shiina T, Terazima M, Kumazaki S. Characterization of thylakoid membrane in a heterocystous cyanobacterium and green alga with dual-detector fluorescence lifetime imaging microscopy with a systematic change of incident laser power. Biochim Biophys Acta 2015; 1857:46-59. [PMID: 26474523 DOI: 10.1016/j.bbabio.2015.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 09/29/2015] [Accepted: 10/11/2015] [Indexed: 12/01/2022]
Abstract
Fluorescence Lifetime Imaging Microscopy (FLIM) has been applied to plants, algae and cyanobacteria, in which excitation laser conditions affect the chlorophyll fluorescence lifetime due to several mechanisms. However, the dependence of FLIM data on input laser power has not been quantitatively explained by absolute excitation probabilities under actual imaging conditions. In an effort to distinguish between photosystem I and photosystem II (PSI and PSII) in microscopic images, we have obtained dependence of FLIM data on input laser power from a filamentous cyanobacterium Anabaena variabilis and single cellular green alga Parachlorella kessleri. Nitrogen-fixing cells in A. variabilis, heterocysts, are mostly visualized as cells in which short-lived fluorescence (≤0.1 ns) characteristic of PSI is predominant. The other cells in A. variabilis (vegetative cells) and P. kessleri cells show a transition in the status of PSII from an open state with the maximal charge separation rate at a weak excitation limit to a closed state in which charge separation is temporarily prohibited by previous excitation(s) at a relatively high laser power. This transition is successfully reproduced by a computer simulation with a high fidelity to the actual imaging conditions. More details in the fluorescence from heterocysts were examined to assess possible functions of PSII in the anaerobic environment inside the heterocysts for the nitrogen-fixing enzyme, nitrogenase. Photochemically active PSII:PSI ratio in heterocysts is tentatively estimated to be typically below our detection limit or at most about 5% in limited heterocysts in comparison with that in vegetative cells.
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Affiliation(s)
- Shuho Nozue
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Akira Mukuno
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Yumi Tsuda
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Takashi Shiina
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto 606-8522, Japan
| | - Masahide Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
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Kim E, Ahn TK, Kumazaki S. Changes in Antenna Sizes of Photosystems during State Transitions in Granal and Stroma-Exposed Thylakoid Membrane of Intact Chloroplasts in Arabidopsis Mesophyll Protoplasts. ACTA ACUST UNITED AC 2015; 56:759-68. [DOI: 10.1093/pcp/pcv004] [Citation(s) in RCA: 26] [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] [Received: 09/29/2014] [Accepted: 01/13/2015] [Indexed: 11/13/2022]
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Kumazaki S, Akari M, Hasegawa M. Transformation of thylakoid membranes during differentiation from vegetative cell into heterocyst visualized by microscopic spectral imaging. Plant Physiol 2013; 161:1321-33. [PMID: 23274239 PMCID: PMC3585599 DOI: 10.1104/pp.112.206680] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Some filamentous cyanobacteria carry out oxygenic photosynthesis in vegetative cells and nitrogen fixation in specialized cells known as heterocysts. Thylakoid membranes in vegetative cells contain photosystem I (PSI) and PSII, while those in heterocysts contain predominantly PSI. Therefore, the thylakoid membranes change drastically when differentiating from a vegetative cell into a heterocyst. The dynamics of these changes have not been sufficiently characterized in situ. Here, we used time-lapse fluorescence microspectroscopy to analyze cells of Anabaena variabilis under nitrogen deprivation at approximately 295 K. PSII degraded simultaneously with allophycocyanin, which forms the core of the light-harvesting phycobilisome. The other phycobilisome subunits that absorbed shorter wavelengths persisted for a few tens of hours in the heterocysts. The whole-thylakoid average concentration of PSI was similar in heterocysts and nearby vegetative cells. PSI was best quantified by selective excitation at a physiological temperature (approximately 295 K) under 785-nm continuous-wave laser irradiation, and detection of higher energy shifted fluorescence around 730 nm. Polar distribution of thylakoid membranes in the heterocyst was confirmed by PSI-rich fluorescence imaging. The findings and methodology used in this work increased our understanding of how photosynthetic molecular machinery is transformed to adapt to different nutrient environments and provided details of the energetic requirements for diazotrophic growth.
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Affiliation(s)
- Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
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9
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Motoki H, Koyama J, Nakazawa H, Aizawa K, Kasai H, Izawa A, Tomita T, Miyashita Y, Kumazaki S, Takahashi M, Ikeda U. Torsion analysis in the early detection of anthracycline-mediated cardiomyopathy. Eur Heart J Cardiovasc Imaging 2011; 13:95-103. [DOI: 10.1093/ejechocard/jer172] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hasegawa M, Yoshida T, Yabuta M, Terazima M, Kumazaki S. Anti-Stokes Fluorescence Spectra of Chloroplasts in Parachlorella kessleri and Maize at Room Temperature as Characterized by Near-Infrared Continuous-Wave Laser Fluorescence Microscopy and Absorption Microscopy. J Phys Chem B 2011; 115:4184-94. [DOI: 10.1021/jp111306k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Makoto Hasegawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Takahiko Yoshida
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Mitsunori Yabuta
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Masahide Terazima
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Miura T, Izawa A, Kumazaki S, Ishii E, Otagiri K, Aizawa K, Koshikawa M, Kasai H, Tomita T, Miyashita Y, Tsutsui H, Koyama J, Ikeda U. Acute myocardial infarction in a 16-year-old girl with chronic GVHD. Bone Marrow Transplant 2010; 45:1576-7. [PMID: 20173788 DOI: 10.1038/bmt.2010.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Hasegawa M, Shiina T, Terazima M, Kumazaki S. Selective Excitation of Photosystems in Chloroplasts Inside Plant Leaves Observed by Near-Infrared Laser-Based Fluorescence Spectral Microscopy. ACTA ACUST UNITED AC 2009; 51:225-38. [DOI: 10.1093/pcp/pcp182] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nishiyama M, Sowa Y, Kumazaki S, Kimura Y, Homma M, Ishijima A, Terazima M. High-pressure Microscopy For Modulating The Torque Generation Of Bacterial Flagellar Motors. Biophys J 2009. [DOI: 10.1016/j.bpj.2008.12.3337] [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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14
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Kumazaki S, Hasegawa M, Ghoneim M, Shimizu Y, Okamoto K, Nishiyama M, Oh-Oka H, Terazima M. A line-scanning semi-confocal multi-photon fluorescence microscope with a simultaneous broadband spectral acquisition and its application to the study of the thylakoid membrane of a cyanobacterium Anabaena PCC7120. J Microsc 2007; 228:240-54. [PMID: 17970923 DOI: 10.1111/j.1365-2818.2007.01835.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We describe the construction and characterization of a laser-line-scanning microscope capable of detection of broad fluorescence spectra with a resolution of 1 nm. A near-infrared femtosecond pulse train at 800 nm was illuminated on a line (one lateral axis, denoted as X axis) in a specimen by a resonant scanning mirror oscillating at 7.9 kHz, and total multi-photon-induced fluorescence from the linear region was focused on the slit of an imaging polychromator. An electron-multiplying CCD camera was used to resolve fluorescence of different colours at different horizontal pixels and fluorescence of different spatial positions in a specimen at different vertical pixels. Scanning on the other two axes (Y and Z) was achieved by a closed-loop controlled sample scanning stage and a piezo-driven objective actuator. The full widths at half maximum of the point-spread function of the system were estimated to be 0.39-0.40, 0.33 and 0.56-0.59 mum for the X (lateral axis along the line-scan), Y (the other lateral axis) and Z axes (the axial direction), respectively, at fluorescence wavelengths between 644 and 690 nm. A biological application of this microscope was demonstrated in a study of the sub-cellular fluorescence spectra of thylakoid membranes in a cyanobacterium, Anabaena PCC7120. It was found that the fluorescence intensity ratio between chlorophyll molecules mainly of photosystem II and phycobilin molecules of phycobilisome (chlorophyll/phycobilin), in the thylakoid membranes, became lower as one probed deeper inside the cells. This was attributable not to position dependence of re-absorption or scattering effects, but to an intrinsic change in the local physiological state of the thylakoid membrane, with the help of a transmission spectral measurement of sub-cellular domains. The efficiency of the new line-scanning spectromicroscope was estimated in comparison with our own point-by-point scanning spectromicroscope. Under typical conditions of observing cyanobacterial cells, the total exposure time became shorter by about 50 times for a constant excitation density. The improvement factor was proportional to the length of the line-scanned region, as expected.
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Affiliation(s)
- Shigeichi Kumazaki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan.
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15
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Shibata T, Fujimatsu T, Suzuki H, Kitanaka Y, Osawa H, Odagiri N, Tauchi K, Koike H, Aruga M, Sakurai S, Yorita K, Kumazaki S. [Off-pump coronary artery bypass for old myocardial infarction associated with jejunotomy for obstructive ileus due to gall bladder stone; report of a case]. Kyobu Geka 2005; 58:921-4. [PMID: 16167822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
In non-cardiac operative cases with inflammatory digestive organ disease, bacterial translocation (BT) often results from non-enteral nutrition postoperatively. If coronary artery bypass grafting (CABG) is performed in the case having old myocardial infarction (OMI) and inflammatory digestive organ disease at first before non-cardiac operation, he seems vulnerable to have severe complications such as multiple organ failure due to systemic inflammatory response syndrome (SIRS) and preexisting BT postoperatively. We performed a off-pump CABG (OPCAB) for OMI associated with jejunotomy for obstructive ileus due to gall bladder stone. No complication was found in the postoperative course. We conclude that combined operation, non-cardiac surgery after OPCAB is worth considering in those cases. And we think OPCAB is better than conventional CABG in such cases, because cardiopulmonary bypass is known to ponder comparable damages to immune system, coagulation system and others.
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Affiliation(s)
- T Shibata
- Department of Cardiovascular Surgery, Aizawa Hospital, Matsumoto, Japan
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Palit DK, Zhang T, Kumazaki S, Yoshihara K. Hydrogen-Bond Dynamics in the Excited State of Coumarin 102−Aniline Hydrogen-Bonded Complex. J Phys Chem A 2003. [DOI: 10.1021/jp030633a] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dipak K. Palit
- Radiation Chemistry & Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India, and School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Tieqiao Zhang
- Radiation Chemistry & Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India, and School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Shigeichi Kumazaki
- Radiation Chemistry & Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India, and School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
| | - Keitaro Yoshihara
- Radiation Chemistry & Chemical Dynamics Division, Chemistry Group, Bhabha Atomic Research Centre, Mumbai 400 085, India, and School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
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Kumazaki S, Ikegami I, Furusawa H, Yoshihara K. Energy Equilibration among the Chlorophylls in the Electron-Transfer System of Photosystem I Reaction Center from Spinach. J Phys Chem A 2002. [DOI: 10.1021/jp026532e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shigeichi Kumazaki
- School of Materials Sciences, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Isamu Ikegami
- School of Materials Sciences, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Hiroko Furusawa
- School of Materials Sciences, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Keitaro Yoshihara
- School of Materials Sciences, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
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Kumazaki S, Abiko K, Ikegami I, Iwaki M, Itoh S. Energy equilibration and primary charge separation in chlorophyll d-based photosystem I reaction center isolated from Acaryochloris marina. FEBS Lett 2002; 530:153-7. [PMID: 12387884 DOI: 10.1016/s0014-5793(02)03446-4] [Citation(s) in RCA: 30] [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] [Indexed: 11/16/2022]
Abstract
Primary photochemistry in photosystem I (PS I) reaction center complex from Acaryochloris marina that uses chlorophyll d instead of chlorophyll a has been studied with a femtosecond spectroscopy. Upon excitation at 630 nm, almost full excitation equilibration among antenna chlorophylls and 40% of the excitation quenching by the reaction center are completed with time constants of 0.6(+/-0.1) and 4.9(+/-0.6) ps, respectively. The rise and decay of the primary charge-separated state proceed with apparent time constants of 7.2(+/-0.9) and 50(+/-10) ps, suggesting the reduction of the primary electron acceptor chlorophyll (A(0)) and its reoxidation by phylloquinone (A(1)), respectively.
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Affiliation(s)
- Shigeichi Kumazaki
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan.
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Kumazaki S, Iwaki M, Ikegami I, Kandori H, Yoshihara K, Itoh S. Rates of Primary Electron Transfer Reactions in the Photosystem I Reaction Center Reconstituted with Different Quinones as the Secondary Acceptor. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100094a033] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [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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Kumazaki S, Kandori H, Petek H, Yoshihara K, Ikegami I. Primary Photochemical Processes in P700-Enriched Photosystem I Particles: Trap-Limited Excitation Decay and Primary Charge Separation. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100091a057] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [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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21
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Rubtsov IV, Ebina K, Satou F, Oh JW, Kumazaki S, Suzumoto T, Tani T, Yoshihara K. Spectral Sensitization and Supersensitization of AgBr Nanocrystals Studied by Ultrafast Fluorescence Spectroscopy. J Phys Chem A 2002. [DOI: 10.1021/jp013145g] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Igor V. Rubtsov
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Kojiro Ebina
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Fuminori Satou
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Ji-Won Oh
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Shigeichi Kumazaki
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Takeshi Suzumoto
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Tadaaki Tani
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Keitaro Yoshihara
- Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, Ashigara Research Laboratories, Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa 250-0193, Japan, and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
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22
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Oh JW, Kumazaki S, Rubtsov IV, Suzumoto T, Tani T, Yoshihara K. Ultrafast energy transfer in J-aggregate on AgBr microcrystals: its dependence on dye coverage. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(01)01447-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Rubtsov IV, Zhang T, Nakajima H, Aono S, Rubtsov GI, Kumazaki S, Yoshihara K. Conformational dynamics of the transcriptional regulator CooA protein studied by subpicosecond mid-infrared vibrational spectroscopy. J Am Chem Soc 2001; 123:10056-62. [PMID: 11592884 DOI: 10.1021/ja011023w] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CooA, which is a transcriptional regulator heme protein allosterically triggered by CO, is studied by femtosecond visible-pump mid-IR-probe spectroscopy. Transient bleaching upon excitation of the heme in the Soret band is detected at approximately 1979 cm(-1), which is the absorption region of the CO bound to the heme. The bleach signal shows a nonexponential decay with time constants of 56 and 290 ps, caused by the rebinding of the CO to the heme. About 98% of dissociated CO recombines geminately. The geminate recombination rate in CooA is significantly faster than those in myoglobin and hemoglobin. The angle of the bound CO with respect to the porphyrin plane is calculated to be about 78 degrees on the basis of the anisotropy measurements. A shift of the bleached mid-IR spectrum of the bound CO is detected and has a characteristic time of 160 ps. It is suggested that the spectral shift is caused by a difference in the frequency of the bound CO in different protein conformations, particularly in an active conformation and in an intermediate one, which is on the way toward an inactive conformation. Thus, the biologically relevant conformation change in CooA was traced. Possible assignment of the observed conformation change is discussed.
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Affiliation(s)
- I V Rubtsov
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan.
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24
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Imamura H, Kinoshita O, Maruyama K, Izawa A, Uchikawa SI, Kumazaki S, Takahashi W, Yokoseki O, Yazaki Y, Koizumi T, Kubo K. Two cases of bronchial asthma after treatment with amiodarone. Pacing Clin Electrophysiol 2001; 24:1563-5. [PMID: 11707052 DOI: 10.1046/j.1460-9592.2001.01563.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Amiodarone is a highly effective antiarrhythmic agent for the prevention of life-threatening arrhythmias. Two cases are described of patients who developed bronchial asthma after treatment with amiodarone. The bronchial asthma resolved after the dose of amiodarone was decreased in both patients. To our knowledge, an association between amiodarone and severe bronchial asthma has previously been reported only once in the medical literature. Physicians should note that amiodarone may cause bronchospasm in susceptible patients.
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Affiliation(s)
- H Imamura
- First Department of Internal Medicine, Shinshu University School of Medicine, Matsumoto, Japan.
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25
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Morimoto A, Yatsuhashi T, Shimada T, Kumazaki S, Yoshihara K, Inoue H. Molecular Mechanism of the Intermolecular Hydrogen Bond between 2-Piperidinoanthraquinone and Alcohol in the Excited State: Direct Observation of the Out-of-Plane Mode Interaction with Alcohol by Transient Absorption Studies. J Phys Chem A 2001. [DOI: 10.1021/jp004560w] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akimitsu Morimoto
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
| | - Tomoyuki Yatsuhashi
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
| | - Tetsuya Shimada
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
| | - Shigeichi Kumazaki
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
| | - Keitarou Yoshihara
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
| | - Haruo Inoue
- Department of Applied Chemistry, Graduate Course of Engineering, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiouji, Tokyo 192-0397, Japan, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 9 23-12, Japan, and CREST, JST (Japan Science and Technology)
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26
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Kumazaki S, Ikegami I, Furusawa H, Yasuda S, Yoshihara K. Observation of the Excited State of the Primary Electron Donor Chlorophyll (P700) and the Ultrafast Charge Separation in the Spinach Photosystem I Reaction Center. J Phys Chem B 2001. [DOI: 10.1021/jp003122m] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shigeichi Kumazaki
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Isamu Ikegami
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Hiroko Furusawa
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Shuichiro Yasuda
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
| | - Keitaro Yoshihara
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-0195, Japan
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27
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Kumazaki S, Nakajima H, Sakaguchi T, Nakagawa E, Shinohara H, Yoshihara K, Aono S. Dissociation and recombination between ligands and heme in a CO-sensing transcriptional activator CooA. A flash photolysis study. J Biol Chem 2000; 275:38378-83. [PMID: 10978334 DOI: 10.1074/jbc.m005533200] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
CooA from Rhodospirillum rubrum is a transcriptional activator in which a heme prosthetic group acts as a CO sensor and regulates the activity of the protein. In this study, the electronic relaxation of the heme, and the concurrent recombination between ligands and the heme at approximately 280 K were examined in an effort to understand the environment around the heme and the dynamics of the ligands. Upon photoexcitation of the reduced CooA at 400 nm, electronic relaxation of the heme occurred with time constants of 0.8 and 1.7 ps. The ligand rebinding was substantially completed with a time constant of 6.5 ps, followed by a slow relaxation process with a time constant of 173 ps. In the case of CO-bound CooA, relaxation of the excited heme occurred with two time constants, 1.1 and 2.4 ps, which were largely similar to those with reduced CooA. The subsequent CO recombination process was remarkably fast compared with that of other CO-bound heme proteins. It was well described as a biphasic geminate recombination process with time constants of 78 ps (60%) and 386 ps (30%). About 10% of the excited heme remained unligated at 1.9 ns. The dynamics of rebinding of CO thus will help us to understand how the physiologically relevant diatomic molecule approaches the heme binding site in CooA with picosecond resolution.
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Affiliation(s)
- S Kumazaki
- School of Materials Science, Japan Advanced Institute of Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan.
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28
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Takahashi W, Hayashida M, Kumazaki S, Watanabe N, Imamura H. [Impaired cardiac function in a 61-year-old woman with coarse facial features, enlarged hands and feet]. J Cardiol 2000; 36:343-5. [PMID: 11107557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- W Takahashi
- First Department of Internal Medicine, Shinshu University School of Medicine, Nagano
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29
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Yoshihara K, Kumazaki S. Primary processes in plant photosynthesis: photosystem I reaction center. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 2000. [DOI: 10.1016/s1389-5567(00)00003-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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30
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Usui K, Anzai C, Sano K, Kumazaki S, Ishihara T. [Primary Sjögren's syndrome with pulmonary hypertension]. Nihon Kokyuki Gakkai Zasshi 1998; 36:478-81. [PMID: 9742868] [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: 02/08/2023]
Abstract
A 50-year-old woman was admitted to our hospital because of dyspnea on exertion. A chest X-ray film showed cardiomegaly and echocardiography revealed right-heart overload. Right heart catheterization studies revealed pulmonary hypertension and no signs of pulmonary embolism or vasculitis. The patient had complained of Raynaud's phenomenon since 6 years before admission. She did not notice eye or mouth dryness, but examination of a lip-biopsy specimen showed infiltration of lymphocytes into the salivary glands. Laboratory findings showed hypergammaglobulinemia and hemolytic anemia. Primary Sjögren's syndrome with pulmonary hypertension was diagnosed. Her general condition improved with steroid pulse therapy followed by oral administration of corticosteroids and cyclophosphamide.
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Affiliation(s)
- K Usui
- Division of Pulmonology, NTT Kanto Teishin Hospital, Tokyo, Japan
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31
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Itoh T, Mochizuki M, Kumazaki S, Ishihara T, Fukayama M. Cystic pulmonary metastases of endometrial stromal sarcoma of the uterus, mimicking lymphangiomyomatosis: a case report with immunohistochemistry of HMB45. Pathol Int 1997; 47:725-9. [PMID: 9361109 DOI: 10.1111/j.1440-1827.1997.tb04449.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A case of endometrial stromal sarcoma (ESS) showed cystic pulmonary metastases mimicking lymphangiomyomatosis (LAM). A 58-year-old female, who had undergone total hysterectomy for low-grade ESS 16 years previously, had repeated bouts of pneumothorax. Multiple thin-walled cysts in the peripheral lung were revealed by radiological examinations. In an open-lung biopsy specimen, cystic lesions were surrounded by layers of spindle-shaped cells of varying thickness that resembled LAM. However, in addition to subtle histologic differences from LAM, HMB45 (antimelanoma antibody) showed positive in LAM (n = 3), but was negative in ESS (n = 2) and the cystic lesions of this case. Using myogenic markers (desmin and alpha-smooth muscle actin), metastatic ESS could be immunohistochemically differentiated from mesenchymal cystic hamartoma (n = 1). HMB45 immunohistochemistry is useful in the differential diagnosis of cystic pulmonary lesions.
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MESH Headings
- Actins/analysis
- Antigens, Neoplasm/analysis
- Biomarkers/analysis
- Biopsy
- Desmin/analysis
- Diagnosis, Differential
- Endometrial Neoplasms/pathology
- Female
- Humans
- Immunohistochemistry
- Lung Neoplasms/chemistry
- Lung Neoplasms/diagnostic imaging
- Lung Neoplasms/secondary
- Lymphangioleiomyomatosis/diagnostic imaging
- Lymphangioleiomyomatosis/pathology
- Melanoma-Specific Antigens
- Middle Aged
- Neoplasm Proteins/analysis
- Neoplasms, Cystic, Mucinous, and Serous/chemistry
- Neoplasms, Cystic, Mucinous, and Serous/diagnostic imaging
- Neoplasms, Cystic, Mucinous, and Serous/secondary
- Sarcoma/chemistry
- Sarcoma/diagnostic imaging
- Sarcoma/secondary
- Tomography, X-Ray Computed
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Affiliation(s)
- T Itoh
- Department of Diagnostic Pathology, Kanto Teishin Hospital, Tokyo, Japan.
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32
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Kumazaki S, Ikegami I, Yoshihara K. Excitation and Electron Transfer from Selectively Excited Primary Donor Chlorophyll (P700) in a Photosystem I Reaction Center. J Phys Chem A 1997. [DOI: 10.1021/jp961948b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shigeichi Kumazaki
- Institute for Molecular Science, Myodaiji, Okazaki, 444 Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-01, Japan
| | - Isamu Ikegami
- Institute for Molecular Science, Myodaiji, Okazaki, 444 Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-01, Japan
| | - Keitaro Yoshihara
- Institute for Molecular Science, Myodaiji, Okazaki, 444 Japan, and Faculty of Pharmaceutical Sciences, Teikyo University, Sagamiko, Kanagawa, 199-01, Japan
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33
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Hayashi T, Miyahara T, Ogoshi H, Kumazaki S, Yoshihara K. Photoinduced Electron Transfer between Multifunctional Porphyrin and Ubiquinone Analogues Linked by Several Hydrogen-Bonding Interactions. ACTA ACUST UNITED AC 1996. [DOI: 10.1002/anie.199619641] [Citation(s) in RCA: 30] [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: 11/10/2022]
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34
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Hayashi T, Miyahara T, Kumazaki S, Ogoshi H, Yoshihara K. Photoinduzierter Elektronentransfer zwischen multifunktionellen, über mehrere H-Brücken verknüpften Porphyrin- und Ubichinon-Analoga. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961081723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Iwaki M, Kumazaki S, Yoshihara K, Erabi T, Itoh S. ΔG0 Dependence of the Electron Transfer Rate in the Photosynthetic Reaction Center of Plant Photosystem I: Natural Optimization of Reaction between Chlorophyll a (A0) and Quinone. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960221k] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masayo Iwaki
- National Institute for Basic Biology, Myodaiji, Okazaki 444, Institute for Molecular Science, Myodaiji, Okazaki 444, and Faculty of Engineering, Tottori University, Tottori 680, Japan
| | - Shigeichi Kumazaki
- National Institute for Basic Biology, Myodaiji, Okazaki 444, Institute for Molecular Science, Myodaiji, Okazaki 444, and Faculty of Engineering, Tottori University, Tottori 680, Japan
| | - Keitaro Yoshihara
- National Institute for Basic Biology, Myodaiji, Okazaki 444, Institute for Molecular Science, Myodaiji, Okazaki 444, and Faculty of Engineering, Tottori University, Tottori 680, Japan
| | - Tatsuo Erabi
- National Institute for Basic Biology, Myodaiji, Okazaki 444, Institute for Molecular Science, Myodaiji, Okazaki 444, and Faculty of Engineering, Tottori University, Tottori 680, Japan
| | - Shigeru Itoh
- National Institute for Basic Biology, Myodaiji, Okazaki 444, Institute for Molecular Science, Myodaiji, Okazaki 444, and Faculty of Engineering, Tottori University, Tottori 680, Japan
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36
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Merry SAP, Kumazaki S, Tachibana Y, Joseph DM, Porter G, Yoshihara K, Barber J, Durrant JR, Klug DR. Sub-picosecond Equilibration of Excitation Energy in Isolated Photosystem II Reaction Centers Revisited: Time-Dependent Anisotropy. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960388d] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stephen A. P. Merry
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - Shigeichi Kumazaki
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - Yasuhiro Tachibana
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - D. Melissa Joseph
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - George Porter
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - Keitaro Yoshihara
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - James Barber
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - James R. Durrant
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
| | - David R. Klug
- Molecular Dynamics and Photosynthesis Research Groups, Centre for Photomolecular Sciences, Departments of Biochemistry and Chemistry, Imperial College, London, SW7 2AY, and Institute for Molecular Science, Myodaiji, Okazaki 444, Japan
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37
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38
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Yazaki Y, Kumazaki S, Yamada H, Sekiguchi M. [Cardiac sarcoidosis]. Nihon Rinsho 1994; 52:1582-1589. [PMID: 8046845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
To analyze the clinical features of cardiac sarcoidosis, we reviewed case reports and clinical investigations from Japan and other countries. Female patients were more frequently affected in this disease in Japan. Cardiac sarcoidosis is characterized by a high incidence of complete atrioventricular block, right bundle branch block, and ventricular arrhythmias on the electrocardiogram. Echocardiography often reveals left ventricular dilatation with systolic dysfunction and wall thickening or thinning. Radionuclide testings, such as, thallium-201, gallium-67 or technetium-99m pyrophosphate, are useful for detecting cardiac involvement and evaluating efficacy of corticosteroid therapy in patients with sarcoidosis. Most of the patients died due to recurrent or refractory heart failure. It is noteworthy that cases of sudden death during stable cardiac function have become infrequent.
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Affiliation(s)
- Y Yazaki
- 1st Department of Internal Medicine, Shinshu University School of Medicine
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39
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Yoshihara K, Nagasawa Y, Yartsev A, Kumazaki S, Kandori H, Johnson AE, Tominaga K. Femtosecond intermolecular electron transfer in condensed systems. J Photochem Photobiol A Chem 1994. [DOI: 10.1016/1010-6030(94)01038-2] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [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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40
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Takayama T, Hirai S, Oka S, Ishihara T, Kumazaki S, Mishima H, Satoh K, Yano M. Bilateral giant bullae with rapidly increasing fluid in the right bulla following operation: report of a case. Surg Today 1994; 24:272-5. [PMID: 8003872 DOI: 10.1007/bf02032901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A 33-year-old Japanese male was admitted to our hospital for the treatment of left pneumothorax. He was found to have bilateral giant bullae. Retention of fluid was observed in the right giant bulla. The fluid accumulated rapidly directly after bullectomy and excision of the left giant bullae. This suggested the existence of some mechanisms of fluid retention other than an infection of the bulla alone after operation.
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Affiliation(s)
- T Takayama
- Department of Thoracic Surgery, Kanto Teishin Hospital, Tokyo, Japan
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41
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Abstract
We report herein the unusual case of a 45-year-old Japanese man whose chest X-rays revealed an abnormal shadow, increasing in size. A chest wall tumor was suspected, based on the findings of computed tomography (CT) of the thorax, the CT number of which was -137, chest roentgenogram, and an echograph. An open biopsy was performed to establish the final diagnosis. The resected tumor was a pedunculated pleural mass, yellowish in color, the pathological diagnosis of which confirmed a lipoma. Intrathoracic lipomas are rare, but pleural lipomas are seen even less frequently. CT, echography, and percutaneous needle biopsy have been found useful for diagnosing intrathoracic lipomas, but these examinations are not always adequate for confirming the final diagnosis. Consequently, tumor resection is essential for obtaining a pathological diagnosis.
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Affiliation(s)
- T Takayama
- Department of Thoracic Surgery, Kanto Teishin Hospital, Tokyo, Japan
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42
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43
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Ishihara T, Kumazaki S, Mishima H, Sano K. [Oxygen-conserving delivery system]. Nihon Kyobu Shikkan Gakkai Zasshi 1992; 30 Suppl:156-63. [PMID: 1306219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Three methods for improving oxygen delivery efficiency--transtracheal oxygen therapy (TTO), reservoir cannula, and demand-pulse oxygen delivery--are currently available. We discuss our experiences of TTO and its characteristics compared with the other two methods. Since 1988, we have tried to apply TTO to the candidates for home oxygen therapy (HOT) fulfilling the following criteria: 1) good activity and enthusiasm to daily life, 2) high oxygen flow rate with nasal cannula, 3) complicating nasal disorders such as chronic sinusitis, or 4) suffering complications from nasal cannula therapy. We used a disposable 8-Fr feeding tube for a trnastracheal catheter. Patients were taught to change their catheters themselves every day by simply removing the old and reinserting the new catheter. We have experienced nine patients on HOT with TTO. A half to a third of the flow rate of nasal cannular was required with TTO to achieve an equivalent PaO2 level. In cases with hypercapnea, a persistent significant increase of PaCO2 was not found. We measured arterial blood gases, changing the distance from the tract opening to the catheter tip, and it was suggested that in each case there may be an optimum distance to achieve the highest PaO2 level. Seven cases received TTO for more than 18 months, a mean of 30.2 months (range 19.3-48.9) and HOT for a mean of 26.6 months. They all maintained a high degree of enthusiasm for TTO. Two cases could return to work. Five cases enjoyed active daily lives, such as shopping, going out for recreation, travelling, and attending concerts.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T Ishihara
- Center for Respiratory Diseases, Kanto Teishin Hospital, Tokyo
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Kumazaki S, Ishihara T, Sato K, Mishima H, Uzawa T, Sasaki Y. [Assessment of the permeability of the pulmonary microvasculature using radiotracers in a case of adult respiratory distress syndrome]. Nihon Kyobu Shikkan Gakkai Zasshi 1991; 29:258-62. [PMID: 1851905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A 48-year-old man with small cell lung cancer developed ARDS, and massive pulmonary edema fluid was obtained with the fiberoptic bronchoscopy. The pulmonary edema fluid to serum ratios of total protein and albumin were 0.72 and 0.85 respectively. The ratio of LDH was higher (2.71), while that of cholesterol was lower (0.11) than that of total protein. Simultaneously, isopropyl N [I-123] p iodoamphetamine (I-123 IMP) and I-131 human serum albumin (I-131 HSA) were injected into this patient. Samples of blood and pulmonary edema fluid were collected to measure the clearance through the pulmonary microvasculature. The time activity curves of I-123 IMP and I-131 HSA in his blood samples revealed almost constant radioactivity from 5 minutes to 120 minutes after injection, while both radioactivity levels in pulmonary edema fluid samples increased with time. The clearance ratio of I-123 IMP to I-131 HSA was constant at each sampling time (mean +/- SD, 1.51 +/- 0.32). The linear correlation between I-123 IMP clearance and I-131 HSA clearance (r = 0.95, p less than 0.01) suggested that the clearance ratio of exudative plasma components may remain unchanged even if pulmonary microvasculature permeability has changed.
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Affiliation(s)
- S Kumazaki
- Department of Respiratory Medicine, Kanto Teishin Hospital, Tokyo, Japan
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Kumazaki S, Umeda Y, Sato K, Mishima H, Ishihara T, Uzawa T. [Double filtration plasmapheresis in case of Goodpasture's syndrome]. Nihon Kyobu Shikkan Gakkai Zasshi 1990; 28:628-33. [PMID: 2214405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This article describes a case of Goodpasture's syndrome controlled by double filtration plasmapheresis (DFPP) combined with steroid and immunosuppressant therapy. A 48-year-old male, clerk, complaining of fever, dry cough and macroscopic hematuria, was admitted to our hospital. Microscopic hematuria was first pointed out at age 40 on an annual check up. His laboratory data on admission revealed severe anemia, azothemia, macroscopic hematuria and proteinuria. His chest radiograph and CT revealed diffuse nodular densities in bilateral lung fields. Specimens obtained by transbronchial lung biopsy and open renal biopsy revealed linear deposition of IgG by direct immunofluorescent antibody methods. Circulating antiglomerular basement membrane antibody level determined with radioimmunoassay was 1.8% on admission, but one week later it elevated to 5.6% with progression of dyspnea, hypoxemia, and renal failure. Steroid pulse therapy and a total of 6 double filtration plasmaphereses were performed in the first month. Subsequently hypoxemia and dyspnea disappeared, and the chest radiograph of the 40th hospital day showed no abnormal shadows. Two months later recurrence of pulmonary hemorrhage was noticed. Immunosuppressant administration (Cyclophosphamide 100 mg/day) and a total of 10 DFPP procedures were performed with success. By DFPP, circulating anti-GBM antibody fell rapidly to within normal ranges, and anti-GBM antibody level elevated in removed plasma. We think DFPP is effective to remove circulating anti-GBM antibody in Goodpasture's syndrome.
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Affiliation(s)
- S Kumazaki
- Department of Respiratory Disease, Kanto Teishin Hospital, Tokyo, Japan
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Kumazaki S, Oriuchi N, Tomiyoshi K, Inoue T, Sasaki Y. [Distribution of N-isopropyl-p-[I-123]iodoamphetamine among the peripheral blood components: an in vitro study]. Kaku Igaku 1990; 27:243-8. [PMID: 2191163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
With the purpose to clarify dynamics of N-isopropyl-p-[I-123]iodoamphetamine (I-123 IMP) in the blood stream its binding to the peripheral blood components was determined by in vitro experiment. I-123 IMP was added to the peripheral venous blood obtained from healthy volunteers to be incubated for different length of time (0-30 min) at 37 degrees C. The blood was then separated into blood cells and plasma. From the latter platelet rich plasma were separated. Radioactivity in each blood component was counted in a well type scintillation counter respectively. To evaluate the affinity of I-123 IMP to red blood cell the component containing blood cells were washed repeatedly with salines. It was found that the fraction of radioactivity in the blood cell component was 68.0 +/- 6.3% (m +/- 1 S.D.), which was higher than that in the plasma (32.0% +/- 6.3%). The radioactivity in the platelet-rich plasma was only 1.7 +/- 1.1% of the total I-123 IMP activity. This percentage did not change by the incubation time. When Tc-99m DTPA was incubated with blood, radioactivity in the blood cell component was only 22.5%, which is further lowered by 32 +/- 2.1% after each washing to reach 6.8% after three times washing. In contrast the radioactivity of I-123 IMP in blood cell component remained as high as 31.1% after eight times washing. Almost constant fraction (8.20 +/- 0.57%) of radioactivity was freed into supernate by each washing. These findings suggest that a certain specific binding mechanism is involved in the binding of I-123 IMP to red blood cells.
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Affiliation(s)
- S Kumazaki
- Department of Respiratory Medicine, Kanto Teishin Hospital, Tokyo, Japan
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Kumazaki S. [A study on the intrapulmonary kinetics of N-isopropyl-p-[I-123]-iodoamphetamine in patients with interstitial lung diseases--assessment of disease activity by dynamic scintigraphy and regional clearance curve]. Kaku Igaku 1989; 26:1417-28. [PMID: 2615028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aiming at clinical application of N-isopropyl-p-[I-123]-iodoamphetamine (I-123 IMP) to lung diseases intrapulmonary kinetics of I-123 IMP was studied. Dynamic lung scintigraphy was performed after intravenous injection of 3 MBq I-123 IMP in six normal volunteers and twenty patients with interstitial lung diseases. Simultaneously data were acquired in a data processor with 60-sec intervals over the period of 60 min. Time-activity curves of two areas of each lung field were obtained to calculate k values by monoexponential fitting method. In patients with interstitial lung diseases k values were significantly decreased (p less than 0.001) (0.995 X 10(-2) +/- 0.26 X 10(-2) as compared with those (1.602 X 10(-2) +/- 0.24 X 10(-2) in normal volunteers. For the assessment of capillary blood volume in the lung Tc-99m Sn colloids (SN) were given i.v. before I-123 IMP in 16 patients. There was a high correlation between regional uptake ratio of I-123 IMP and Tc-99m Sn colloids (SN) both at 1 min (n = 64; r = 0.91) and 25 min (n = 64; r = 0.93) after injection. The k values of IMP clearance curves were correlative to diffusing capacity at rest for CO (DLCO) (r = 0.71, p less than 0.01), vital capacity (r = 0.53, p less than 0.05) and forced expiratory volume in 1 sec (r = 0.58, p less than 0.05). These results suggest that the lung clearance of I-123 IMP reflect the severity of the endothelial cell injury which cause decrease in the capillary blood volume in interstitial lung diseases. Dynamic lung scintigraphy with I-123 IMP should prove useful for monitoring disease activity of interstitial lung diseases providing a new parameters to assess a non-respiratory lung function.
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Kumazaki S, Mishima H, Nishimiya K, Ishihara T, Yamada R, Uzawa T, Suematsu N. [An early stage case of pulmonary lymphangiomyomatosis]. Nihon Kyobu Shikkan Gakkai Zasshi 1989; 27:860-5. [PMID: 2810975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A 35-year-old unmarried woman was admitted to our hospital because of right pneumothorax. Pulmonary lymphangiomyomatosis was suspected from CT and transbronchial lung biopsy findings. The diagnosis was confirmed histologically by open lung biopsy. As her biopsy specimen showed positive findings for both estrogen and progesterone receptor, tamoxifen administration was started. The CT revealed multiple cystic lesions (5-10 mm in diameter) but otherwise normal vascular structures and normal lung density. The plain chest radiograph showed no abnormalities. CT is very useful for the early detection of pulmonary lymphangiomyomatosis.
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Arai S, Tamura S, Kumazaki S, Mishima H, Uzawa T. [A case of pulmonary metastatic calcification due to cryptogenic hypercalcemia]. Nihon Kyobu Shikkan Gakkai Zasshi 1987; 25:1249-54. [PMID: 3449682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Harada T, Kumazaki S, Kaitori K, Miyagata S, Toda M. [Ureteral compliance and sectional dimensions measured by the impedance method]. Nihon Heikatsukin Gakkai Zasshi 1985; 21:290-2. [PMID: 4094232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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