Search results for: Hidenori Hayashi

Items from 1 to 20 out of 36 results

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Epicardial Implantable Cardioverter-Defibrillator in a 2-Month-Old Infant

Koichi Sughimoto, Yuta Tsuchida, Hidenori Hayashi, Shinzo Torii, more

The Annals of Thoracic Surgery > 2017 > 103 > 3 > e263-e265

We describe the implantation of an implantable cardioverter defibrillator (ICD) in a 2-month-old infant with frequent sustained ventricular tachycardia (VT) refractory to antiarrhythmic agents. An epicardial ICD shock coil lead and pacing leads were placed, as was a cumbersome device console that was stored in a pocket between the left external and internal oblique muscles. These methods were safe...

article

Factors associated with a low initial cerebral oxygen saturation value in patients undergoing cardiac surgery

Kensuke Kobayashi, Tadashi Kitamura, Satoshi Kohira, Shinzo Torii, more

Journal of Artificial Organs > 2017 > 20 > 2 > 110-116

Regional cerebral oximetry using near-infrared spectroscopy device, an INVOS 5100 C (Medtronic, Minneapolis, MN, USA), during cardiac surgery aims to avoid perioperative neurological impairment, especially during cardiopulmonary bypass. However, it is not uncommon to encounter critically low initial cerebral regional oxygen saturation or a low value unresponsive to intervention. Therefore, it is important...

article

Occurrence of trans monounsaturated and polyunsaturated fatty acids in Colwellia psychrerythraea strain 34H

Mikako Hashimoto, Yoshitake Orikasa, Hidenori Hayashi, Kentaro Watanabe, more

Journal of Basic Microbiology > 55 > 7 > 838 - 845

Colwellia psychrerythraea strain 34H is an obligately psychrophilic bacterium that has been used as a model cold‐adapted microorganism because of its psychrophilic growth profile, significant production of cold‐active enzymes, and cryoprotectant extracellular polysaccharide substances. However, its fatty acid components, particularly trans unsaturated fatty acids and long‐chain polyunsaturated fatty...

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Five-week use of a monopivot centrifugal blood pump as a right ventricular assist device in severe dilated cardiomyopathy

Takamichi Inoue, Tadashi Kitamura, Shinzo Torii, Naoji Hanayama, more

Journal of Artificial Organs > 2014 > 17 > 1 > 95-98

Right heart failure is a critical complication in patients requiring mechanical ventricular support. However, it is often difficult to provide adequate right ventricular support in the acute phase. A 41-year-old woman diagnosed with dilated cardiomyopathy with severe right heart failure underwent implantation of a paracorporeal pulsatile left ventricular assist device (LVAD, Nipro Corporation, Tokyo,...

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Improved Protein Overexpression and Purification Strategies for Structural Studies of Cyanobacterial Metal-Responsive Transcription Factor, SmtB from Marine Synechococcus sp. PCC 7002

Shelake Rahul Mahadev, Hidenori Hayashi, Takahisa Ikegami, Shunnosuke Abe, more

The Protein Journal > 2013 > 32 > 8 > 626-634

There are structural and functional differences in SmtB homologs, metal-responsive transcription factors responsible for sensing of excess heavy metal ions in marine and freshwater cyanobacterial strains. The structure of SmtB from freshwater Synechococcus sp. strain PCC 7942 is elucidated with nuclear magnetic resonance (NMR) and crystallography techniques. But knowledge about the functioning of...

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Expression of a highly active catalase VktA in the cyanobacterium Synechococcus elongatus PCC 7942 alleviates the photoinhibition of photosystem II

Haruhiko Jimbo, Akiko Noda, Hidenori Hayashi, Takanori Nagano, more

Photosynthesis Research > 2013 > 117 > 1-3 > 509-515

The repair of photosystem II (PSII) after photodamage is particularly sensitive to reactive oxygen species—such as H₂O₂, which is abundantly produced during the photoinhibition of PSII. In the present study, we generated a transformant of the cyanobacterium Synechococcus elongatus PCC 7942 that expressed a highly active catalase, VktA, which is derived from a facultatively psychrophilic bacterium...

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Distinct features of protein folding by the GroEL system from a psychrophilic bacterium, Colwellia psychrerythraea 34H

Seiji Yamauchi, Yuya Ueda, Mika Matsumoto, Umihiko Inoue, more

Extremophiles > 2012 > 16 > 6 > 871-882

We investigated the protein folding mechanism of the GroEL system of a psychrophilic bacterium, Colwellia psychrerythraea 34H. The amount of mRNA of the groESL operon of C. psychrerythraea was increased about 6-fold after a temperature upshift from 8 to 18 °C for 30 min, suggesting that this temperature causes heat stress in this bacterium. A σ³²-type promoter was found upstream of the groESL, suggesting...

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Protection by α-tocopherol of the repair of photosystem II during photoinhibition in Synechocystis sp. PCC 6803

Shuhei Inoue, Kayoko Ejima, Eri Iwai, Hidenori Hayashi, more

BBA - Bioenergetics > 2011 > 1807 > 2 > 236-241

α-Tocopherol is a lipophilic antioxidant that is an efficient scavenger of singlet oxygen. We investigated the role of α-tocopherol in the protection of photosystem II (PSII) from photoinhibition using a mutant of the cyanobacterium Synechocystis sp. PCC 6803 that is deficient in the biosynthesis of α-tocopherol. The activity of PSII in mutant cells was more sensitive to inactivation by strong light...

article

The consensus motif for N‐myristoylation of plant proteins in a wheat germ cell‐free translation system

Seiji Yamauchi, Naoki Fusada, Hidenori Hayashi, Toshihiko Utsumi, more

The FEBS Journal > 277 > 17 > 3596 - 3607

Protein N‐myristoylation plays key roles in various cellular functions in eukaryotic organisms. To clarify the relationship between the efficiency of protein N‐myristoylation and the amino acid sequence of the substrate in plants, we have applied a wheat germ cell‐free translation system with high protein productivity to examine the N‐myristoylation of various wild‐type and mutant forms of Arabidopsis thaliana...

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Psb30 contributes to structurally stabilise the Photosystem II complex in the thermophilic cyanobacterium Thermosynechococcus elongatus

Miwa Sugiura, Sayo Harada, Takashi Manabe, Hidenori Hayashi, more

BBA - Bioenergetics > 2010 > 1797 > 8 > 1546-1554

A deletion mutant that lacks the Psb30 protein, one of the small subunits of Photosystem II, was constructed in a Thermosynechococcus elongatus strain in which the D1 protein is expressed from the psbA ₃ gene (WT*). The ΔPsb30 mutant appears more susceptible to photodamage, has a cytochrome b ₅₅₉ that is converted into the low potential form, and probably also lacks the PsbY subunit...

article

Synthesis of fatty acids de novo is required for photosynthetic acclimation of Synechocystis sp. PCC 6803 to high temperature

Yohei Nanjo, Naoki Mizusawa, Hajime Wada, Antoni R. Slabas, more

BBA - Bioenergetics > 2010 > 1797 > 8 > 1483-1490

The role of fatty acid synthesis in the acclimation of the photosynthetic machinery to high temperature was investigated in a mutant of the cyanobacterium Synechocystis sp. PCC 6803 that had a lower than wild-type level of enoyl-(acyl-carrier-protein) reductase FabI, a key component of the type-II fatty acid synthase system. The mutant exhibited marked impairment in the tolerance and acclimation of...

article

Efficient induction of cytotoxic T lymphocytes specific for severe acute respiratory syndrome (SARS)-associated coronavirus by immunization with surface-linked liposomal peptides derived from a non-structural polyprotein 1a

Shunsuke Kohyama, Satoshi Ohno, Tatsuya Suda, Maiko Taneichi, more

Antiviral Research > 2009 > 84 > 2 > 168-177

Spike and nucleocapsid are structural proteins of severe acute respiratory syndrome (SARS)-associated coronavirus (SARS-CoV) and major targets for cytotoxic T lymphocytes (CTLs). In contrast, non-structural proteins encoded by two-thirds of viral genome are poorly characterized for cell-mediated immunity. We previously demonstrated that nucleocapsid-derived peptides chemically coupled to the surface...

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Evidence that D1-His332 in Photosystem II from Thermosynechococcus elongatus Interacts with the S ₃ -State and not with the S ₂ -State

Miwa Sugiura, Fabrice Rappaport, Warwick Hillier, Pierre Dorlet, more

Biochemistry > 2009 > 48 > 33 > 7856 - 7866

article

Synthetic peptides coupled to the surface of liposomes effectively induce SARS coronavirus-specific cytotoxic T lymphocytes and viral clearance in HLA-A*0201 transgenic mice

Satoshi Ohno, Shunsuke Kohyama, Maiko Taneichi, Osamu Moriya, more

Vaccine > 2009 > 27 > 29 > 3912-3920

We investigated whether the surface-linked liposomal peptide was applicable to a vaccine based on cytotoxic T lymphocytes (CTLs) against severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV). We first identified four HLA-A*0201-restricted CTL epitopes derived from SARS-CoV using HLA-A*0201 transgenic mice and recombinant adenovirus expressing predicted epitopes. These peptides were coupled...

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The rpoH gene encoding heat shock sigma factor σ³² of psychrophilic bacterium Colwellia maris

Seiji Yamauchi, Hidetoshi Okuyama, Yoshitaka Nishiyama, Hidenori Hayashi

Extremophiles > 2006 > 10 > 2 > 149-158

The rpoH gene encoding a heat shock sigma factor, σ³², was cloned from the psychrophilic bacterium Colwellia maris. The deduced amino acid sequence of σ³² from C. maris is more than 60% homologous to that of σ³² from mesophilic bacteria. The RpoH box, a 9-amino-acid sequence region (QRKLFFNLR) specific to σ³², and two downstream box sequences complementary to a part of 16S rRNA were identified. Primer...

article

Acclimation of photosystem II to high temperature in a suspension culture of soybean (Glycine max) cells requires proteins that are associated with the thylakoid membrane

Yoshitaka Nishiyama, Kazuya Takechi, Yohei Nanjo, Norio Murata, more

Photosynthesis Research > 2006 > 90 > 3 > 223-232

In a study of the responses of photosystem II (PSII) to high temperature in suspension-cultured cells of soybean (Glycine max L. Merr.), we found that high temperatures inactivated PSII via two distinct pathways. Inactivation of PSII by moderately high temperatures, such as 41°C, was reversed upon transfer of cells to 25°C. The recovery of PSII required light, but not the synthesis of proteins de...

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Novel phylogenetic assignment database for terminal-restriction fragment length polymorphism analysis of human colonic microbiota

Mitsuharu Matsumoto, Mitsuo Sakamoto, Hidenori Hayashi, Yoshimi Benno

Journal of Microbiological Methods > 2005 > 61 > 3 > 305-319

Various molecular–biological approaches using the 16S rRNA gene sequence have been used for the analysis of human colonic microbiota. Terminal- restriction fragment length polymorphism (T-RFLP) analysis is suitable for a rapid comparison of complex bacterial communities. Terminal-restriction fragment (T-RF) length can be calculated from a known sequence, thus one can predict bacterial species on the...

article

Singlet Oxygen Inhibits the Repair of Photosystem II by Suppressing the Translation Elongation of the D1 Protein in Synechocystis sp. PCC 6803 ^†

Yoshitaka Nishiyama, Suleyman I. Allakhverdiev, Hiroshi Yamamoto, Hidenori Hayashi, more

Biochemistry > 2004 > 43 > 35 > 11321 - 11330

article

PPARα agonists clofibrate and gemfibrozil inhibit cell growth, down-regulate hCG and up-regulate progesterone secretions in immortalized human trophoblast cells

Fumie Hashimoto, Yoshinobu Oguchi, Mieko Morita, Kikumi Matsuoka, more

Biochemical Pharmacology > 2004 > 68 > 2 > 313-321

We studied effects of PPARα agonists clofibric acid and gemfibrozil on cell growth and functions of immortalized human extravillous trophoblast cells. Levels of DNA and protein gradually increased during incubation for 4 days. Gemfibrozil (>0.25mM) and clofibric acid (2.5mM) suppressed the rate of increase in DNA and protein. Specific activities of fatty acyl-CoA oxidase and catalase were increased...

article

Identification and characterization of NuhA, a novel Nudix hydrolase specific for ADP-ribose in the cyanobacterium Synechococcus sp. PCC 7002

Kenji Okuda, Yoshitaka Nishiyama, Eugene H. Morita, Hidenori Hayashi

BBA - Proteins and Proteomics > 2004 > 1699 > 1-2 > 245-252

We cloned the gene for a novel Nudix hydrolase in the cyanobacterium Synechococcus sp. PCC 7002 and termed it nuhA. The deduced amino acid sequence of NuhA included the Nudix motif, GX ₅ EX ₇ RELXEEXGV, which is common to Nudix hydrolases, and in addition, a proline at the 15th amino acid from the C-terminus of the Nudix motif, which is characteristic of the subfamily of ADP-ribose...

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Search results for: Hidenori Hayashi

Epicardial Implantable Cardioverter-Defibrillator in a 2-Month-Old Infant

Factors associated with a low initial cerebral oxygen saturation value in patients undergoing cardiac surgery

Occurrence of trans monounsaturated and polyunsaturated fatty acids in Colwellia psychrerythraea strain 34H

Five-week use of a monopivot centrifugal blood pump as a right ventricular assist device in severe dilated cardiomyopathy

Improved Protein Overexpression and Purification Strategies for Structural Studies of Cyanobacterial Metal-Responsive Transcription Factor, SmtB from Marine Synechococcus sp. PCC 7002

Expression of a highly active catalase VktA in the cyanobacterium Synechococcus elongatus PCC 7942 alleviates the photoinhibition of photosystem II

Distinct features of protein folding by the GroEL system from a psychrophilic bacterium, Colwellia psychrerythraea 34H

Protection by α-tocopherol of the repair of photosystem II during photoinhibition in Synechocystis sp. PCC 6803

The consensus motif for N‐myristoylation of plant proteins in a wheat germ cell‐free translation system

Psb30 contributes to structurally stabilise the Photosystem II complex in the thermophilic cyanobacterium Thermosynechococcus elongatus

Synthesis of fatty acids de novo is required for photosynthetic acclimation of Synechocystis sp. PCC 6803 to high temperature

Efficient induction of cytotoxic T lymphocytes specific for severe acute respiratory syndrome (SARS)-associated coronavirus by immunization with surface-linked liposomal peptides derived from a non-structural polyprotein 1a

Evidence that D1-His332 in Photosystem II from Thermosynechococcus elongatus Interacts with the S ₃ -State and not with the S ₂ -State

Synthetic peptides coupled to the surface of liposomes effectively induce SARS coronavirus-specific cytotoxic T lymphocytes and viral clearance in HLA-A*0201 transgenic mice

The rpoH gene encoding heat shock sigma factor σ³² of psychrophilic bacterium Colwellia maris

Acclimation of photosystem II to high temperature in a suspension culture of soybean (Glycine max) cells requires proteins that are associated with the thylakoid membrane

Novel phylogenetic assignment database for terminal-restriction fragment length polymorphism analysis of human colonic microbiota

Singlet Oxygen Inhibits the Repair of Photosystem II by Suppressing the Translation Elongation of the D1 Protein in Synechocystis sp. PCC 6803 ^†

PPARα agonists clofibrate and gemfibrozil inhibit cell growth, down-regulate hCG and up-regulate progesterone secretions in immortalized human trophoblast cells

Identification and characterization of NuhA, a novel Nudix hydrolase specific for ADP-ribose in the cyanobacterium Synechococcus sp. PCC 7002

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