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排序方式: 共有378条查询结果,搜索用时 375 毫秒
21.
Yukiko Yasuoka Yuichiro Izumi Takashi Fukuyama Haruki Omiya Truyen D. Pham Hideki Inoue Tomomi Oshima Taiga Yamazaki Takayuki Uematsu Noritada Kobayashi Yoshitaka Shimada Yasushi Nagaba Tetsuro Yamashita Masashi Mukoyama Yuichi Sato Susan M. Wall Jeff M. Sands Noriko Takahashi Katsumasa Kawahara Hiroshi Nonoguchi 《Molecules (Basel, Switzerland)》2022,27(3)
Anemia is a major complication of chronic renal failure. To treat this anemia, prolylhydroxylase domain enzyme (PHD) inhibitors as well as erythropoiesis-stimulating agents (ESAs) have been used. Although PHD inhibitors rapidly stimulate erythropoietin (Epo) production, the precise sites of Epo production following the administration of these drugs have not been identified. We developed a novel method for the detection of the Epo protein that employs deglycosylation-coupled Western blotting. With protein deglycosylation, tissue Epo contents can be quantified over an extremely wide range. Using this method, we examined the effects of the PHD inhibitor, Roxadustat (ROX), and severe hypoxia on Epo production in various tissues in rats. We observed that ROX increased Epo mRNA expression in both the kidneys and liver. However, Epo protein was detected in the kidneys but not in the liver. Epo protein was also detected in the salivary glands, spleen, epididymis and ovaries. However, both PHD inhibitors (ROX) and severe hypoxia increased the Epo protein abundance only in the kidneys. These data show that, while Epo is produced in many tissues, PHD inhibitors as well as severe hypoxia regulate Epo production only in the kidneys. 相似文献
22.
23.
Total synthesis of ecteinascidin 743 总被引:1,自引:0,他引:1
Endo A Yanagisawa A Abe M Tohma S Kan T Fukuyama T 《Journal of the American Chemical Society》2002,124(23):6552-6554
The total synthesis of ecteinascidin 743 (1), an extremely potent antitumor agent, has been accomplished. The synthesis features Ugi's 4CC reaction, intramolecular Heck reaction, phenol-aldehyde cyclization, and acid-induced intramolecular sulfide formation. 相似文献
24.
Total synthesis of spider toxins HO-416b (1) and Agel-489 (2) was accomplished using the 2-nitrobenzenesulfonamide (Ns) group as both a protecting and activating group. In this strategy, the C-N bonds were constructed by alkylation of sulfonamides with alkyl halides or Mitsunobu reaction with the corresponding alcohol. Beginning with monoprotection of the symmetrical diamine, the construction of the backbone from diamine 3 was efficiently accomplished in 7 steps for 14 and 9 steps for 29. Removal of the Ns group while the substrate was attached to a novel solid support enabled the efficient isolation of this highly polar compound. 相似文献
25.
Yokoshima S Tokuyama H Fukuyama T 《Angewandte Chemie (International ed. in English)》2000,39(22):4073-4075
26.
T. Fukuyama A. Ilakovac T. Kikuchi 《The European Physical Journal C - Particles and Fields》2008,56(1):125-146
We consider the leptonic and semileptonic (SL) lepton-flavor violating (LFV) decays of the charged leptons in the minimal
supersymmetric standard model (MSSM) with right-handed neutrinos. The parameters of the MSSM model are determined in the framework
of the minimal supersymmetric SO(10) GUT model assuming the minimal supergravity model of supersymmetry breaking. The free
parameters of the model are constrained adopting the WMAP cold dark matter constraint and adjusting the neutrino oscillation
data. So constrained, the SO(10) GUT model gives a definite prediction for the Dirac-neutrino Yukawa matrix, which induces
all LFV effects in the MSSM model through renormalization group equations of soft SUSY breaking parameters. A very detailed
numerical analysis has been made to define numerically all MSSM parameters necessary for the evaluation of the LFV amplitudes.
The basic LFV amplitudes in MSSM were rederived and improved. The formalism for the evaluation of all SL LFV amplitudes is
given. Numerical results for dominant SL LFV branching ratios, the anomalous magnetic moment of the muon and the ℓ→ℓ’γ branching
ratios are given. 相似文献
27.
Munetaka Nakata Masaaki Sugie Harutoshi Takeo Chi Matsumura Tsutomu Fukuyama Kozo Kuchitsu 《Journal of Molecular Spectroscopy》1981,86(1):241-249
The microwave spectra of four isotopic species of dichlorine monoxide (OCl2) have been observed, and the rotational constants have been obtained. The rm structure for each isotopic species has been determined by Watson's method. The equilibrium structure has been estimated by taking proper averages of rm structures to be and ∠eClOCl = 110.886(6)°. The general applicability and the merit of the present method for estimating the equilibrium structure are pointed out. 相似文献
28.
H. Fukuyama 《Surface science》1976,58(1):320-324
Orbital magnetic moment and the frequency dependent conductivities of the Wigner crystal are examined in the harmonic approximation. The effects of scattering on the collective modes are also discussed. 相似文献
29.
Munetaka Nakata Tsutomu Fukuyama Kozo Kuchitsu Harutoshi Takeo Chi Matsumura 《Journal of Molecular Spectroscopy》1980,83(1):118-129
The microwave spectra of eight isotopic species of COCl2 have been observed, and the following rotational constants have been obtained: An analysis of the rotational constants has resulted in the rs and rm structures. The equilibrium structure, re, has been estimated by combining the rm parameters derived according to Watson's method and the re bond distances estimated in our recent electron-diffraction and spectroscopic studies to be , , ∠eClCCl = 111.79 ± 0.24°. 相似文献
30.
Critical modes of one-dimensional fermion systems are examined by use of the renormalization group technique. Both strongly incommensurate and commensurate bands are treated. Both frequency and momentum dependence and the analytic property of the response functions are determined. It is stressed that for some region of coupling constants the model has anomalous dimensions, i.e. it has critical indices dependent on the coupling constants. The results are applied to predict the temperature dependence of the shift and relaxation of the nuclear magnetic resonances. 相似文献