Yoshihiro Nishimura

Learn More
Using confocal microscopy, onset of the mitochondrial permeability transition (MPT) in individual mitochondria within living cells can be visualized by the redistribution of the cytosolic fluorophore, calcein, into mitochondria. Simultaneously, mitochondria release membrane potential-indicating fluorophores like tetramethylrhodamine methylester. The MPT(More)
The DNA-binding region of Myb consists of three imperfect tandem repeats (R1, R2, and R3). We have determined the solution structure of a specific DNA complex of the minimum DNA-binding domain (R2R3) by heteronuclear multidimensional NMR. Both R2 and R3 contain three helices, and the third helix in each is found to be a recognition helix. R2 and R3 are(More)
The polymorphism of HLA-DRB1, -DRB3, and -DRB5 genes as well as magnetic resonance images of the brain and spinal cord were studied in 57 Japanese patients with multiple sclerosis (MS). Twenty-three patients clinically displayed selective involvement of the optic nerve and spinal cord and were classified as having Asian-type MS. The other 34 patients had(More)
In flowering plants, guidance of the pollen tube to the embryo sac (the haploid female gametophyte) is critical for successful fertilization. The target embryo sac may attract the pollen tube as the final step of guidance in the pistil. We show by laser cell ablation that two synergid cells adjacent to the egg cell attract the pollen tube. A single synergid(More)
Phenotypic and phylogenetic studies were performed with two strains (OCh 239T and OCh 210T, T = type strain) of aerobic bacteriochlorophyll-containing bacteria isolated from the charophytes and the epiphytes on the stromatolites, respectively, of a saline lake located on the west coast of Australia. Both strains were chemoheterotrophic, Gram-negative and(More)
BACKGROUND AND PURPOSE Angiotensin II, through stimulation of AT(1) receptors, not only controls blood pressure but also modulates cerebrovascular flow. We sought to determine whether selective AT(1) antagonists could be therapeutically advantageous in brain ischemia during chronic hypertension. METHODS We pretreated spontaneously hypertensive rats (SHR)(More)
Two major structural genomics projects exist in Japan. The oldest, the RIKEN Structural Genomics Initiative, has two major goals: to determine bacterial, mammalian, and plant protein structures by X-ray crystallography and NMR spectroscopy and to perform functional analyses with the target proteins. The newest, the structural genomics project at the(More)
The molecular cloning and the determination of the nucleotide sequence of the ispA gene responsible for farnesyl diphosphate (FPP) synthase [EC] activity in Escherichia coli are described. E. coli ispA strains have temperature-sensitive FPP synthase, and the defective gene is located at about min 10 on the chromosome. The wild-type ispA gene was(More)
Brain Angiotensin II, through stimulation of brain AT(1) receptors, regulates pituitary hormones and autonomic activity. We have administered the insurmountable AT(1) antagonist Candesartan, s.c. via osmotic minipumps for 14 days, to determine whether peripheral chronic AT(1) blockade affects AT(1) receptor binding and mRNA in the brain. Peripherally(More)
The aim of this study was to define short- and long-term results of coronary artery bypass grafting (CABG) in dialysis patients. A retrospective review was carried out on 73 consecutive patients dependent on chronic dialysis who underwent CABG. In 63 isolated CABGs, 9 operations were performed under normal beating heart because of severe atherosclerotic(More)