Search Results - "Esaka, Yukihiro"

Highly Sensitive Fluorescence Detection of Daptomycin in Murine Samples through Derivatization with 2,3-Naphthalenedialdehyde by YAMAMOTO, Takuhei, SAKAMOTO, Kousuke, ESAKA, Yukihiro, UNO, Bunji

“…A highly sensitive high-performance liquid chromatography method has been developed using the pre-column fluorescent derivatization of daptomycin (DAP) through…”
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Preparation of N2-Ethyl-2′-deoxyguanosine-d4 as an Internal Standard for the Electrospray Ionization–Tandem Mass Spectrometric Determination of DNA Damage by Acetaldehyde by ESAKA, Yukihiro, ARUGA, Hiromitsu, KUNISHIMA, Saki, YAMAMOTO, Takuhei, MURAKAMI, Hiroya, SAWAMA, Yoshinari, SAJIKI, Hironao, UNO, Bunji

“…The deuteration of N2-ethyl-2′-deoxyguanosine (Et-dG), which is a DNA adduct generated from acetaldehyde, was studied by the addition reaction of…”
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Evaluation of the adsorption properties of nucleobase-modified sorbents for a solid-phase extraction of water-soluble compounds by Murakami, Hiroya, Omiya, Miho, Miki, Yuta, Umemura, Tomonari, Esaka, Yukihiro, Inoue, Yoshinori, Teshima, Norio

“…We developed hydrophilic interaction chromatography (HILIC)-type sorbents modified with nucleobases for solid phase extraction (SPE). The synthesized…”
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Novel chemically cross-linked self-molding particulate sorbents as solid-phase extraction media by Miki, Yuta, Murakami, Hiroya, Gotoh, Marin, Umemura, Tomonari, Esaka, Yukihiro, Inoue, Yoshinori, Teshima, Norio

“…Here, we describe novel, chemically cross-linked, self-molding particulate polymer sorbents that are utilized as a molding-type solid-phase extraction medium…”
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Effects of hydrophilic monomers on sorptive properties of divinylbenzene-based reversed phase sorbents by Murakami, Hiroya, Aoyanagi, Takuya, Miki, Yuta, Tomita, Hiroki, Esaka, Yukihiro, Inoue, Yoshinori, Teshima, Norio

“…Solid phase extraction (SPE) has been extensively used as a pretreatment method. In SPE methods, commercially available reversed phase type sorbents, which…”
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Feasibility of Trypsin Digestion as a Sample Preparation for Daptomycin Quantification in Murine Skeletal Muscles by Sakai, Yusuke, Murakami, Eriko, Kato, Hideo, Ohyama, Kaname, Esaka, Yukihiro, Yamamoto, Takuhei, Hagihara, Mao, Mikamo, Hiroshige, Uno, Bunji

“…It is important to evaluate the amount of daptomycin (DAP) distributed to skeletal muscles to elucidate the mechanisms related to penetration and side effects,…”
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Effect of High Blood Glucose Level on the Antimicrobial Activity of Daptomycin against Staphylococcus aureus in Streptozotocin-Induced Diabetic Mice by Kondo, Takayuki, Hagihara, Mao, Esaka, Yukihiro, Yamamoto, Takuhei, Uno, Bunji, Yamagishi, Yuka, Mikamo, Hiroshige

“…Daptomycin is active against Staphylococcus aureus including methicillin-resistant S. aureus (MRSA), demonstrating efficacy in the treatment of infections in…”
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Preparation and Evaluation of Molding-type Solid-phase Extraction Media Binding with Commercially Available Adhesives by MIKI, Yuta, MURAKAMI, Hiroya, IIDA, Keisuke, UMEMURA, Tomonari, ESAKA, Yukihiro, INOUE, Yoshinori, TESHIMA, Norio

“…A fabrication method of molding-type solid-phase extraction media (M-SPEM) bound with commercially available adhesive is presented. Six pieces of M-SPEM were…”
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Effects of pendant-like hydrophilic monomers on the adsorption properties of reversed-phase-type sorbents for solid-phase extraction by Murakami, Hiroya, Tomita, Hiroki, Aoyanagi, Takuya, Sugita, Takashi, Miki, Yuta, Esaka, Yukihiro, Inoue, Yoshinori, Teshima, Norio

“…Solid-phase extraction (SPE) has been extensively employed as a pretreatment method. In SPE, reversed-phase-type sorbents have been widely applied for the…”
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Optimization of background electrolyte composition for simultaneous contactless conductivity and fluorescence detection in capillary electrophoresis of biological samples by Lačná, Júlia, Přikryl, Jan, Teshima, Norio, Murakami, Hiroya, Esaka, Yukihiro, Foret, František, Kubáň, Petr

“…In this article, optimization of BGE for simultaneous separation of inorganic ions, organic acids, and glutathione using dual C4D‐LIF detection in capillary…”
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Progress in a selective method for the determination of the acetaldehyde-derived DNA adducts by using HILIC-ESI-MS/MS by Murakami, Hiroya, Horiba, Ruri, Iwata, Tomoko, Miki, Yuta, Uno, Bunji, Sakai, Tadao, Kaneko, Kazuhiro, Ishihama, Yasushi, Teshima, Norio, Esaka, Yukihiro

“…Acetaldehyde (AA), which is present in tobacco smoke, automobile exhaust gases and alcohol beverage, is a mutagen and carcinogen. AA reacts with…”
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Development and Evaluation of HILIC-type Sorbents Modified with Hydrophilic Copolymers for Solid-phase Extraction by MURAKAMI, Hiroya, SUGIYAMA, Takuya, MIKI, Yuta, UMEMURA, Tomonari, ESAKA, Yukihiro, INOUE, Yoshinori, TESHIMA, Norio

“…Hydrophilic interaction chromatography (HILIC) has attractive attention for the separation of water-soluble compounds via HPLC. There are, however, few studies…”
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Molding-type Solid-phase Extraction Media Glued with Commercially Available Adhesives by MIKI, Yuta, MURAKAMI, Hiroya, IIDA, Keisuke, UMEMURA, Tomonari, ESAKA, Yukihiro, INOUE, Yoshinori, TESHIMA, Norio

“…The handling of a particulate sorbent for solid-phase extraction is often troublesome because it causes static clinging and scattering. To overcome this…”
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Evaluation of Type-A Endonucleases for the Quantitative Analysis of DNA Damage due to Exposure to Acetaldehyde Using Capillary Electrophoresis by ESAKA, Yukihiro, HISATO, Kenji, YAMAMOTO, Takuhei, MURAKAMI, Hiroya, UNO, Bunji

“…The substrate selectivities of three endonucleases were studied quantitatively using capillary zone electrophoresis to find one giving…”
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In vitro functional analysis of four variants of human asparagine synthetase by Matsumoto, Hideki, Kawashima, Nana, Yamamoto, Takahiro, Nakama, Mina, Otsuka, Hiroki, Ago, Yasuhiko, Sasai, Hideo, Kubota, Kazuo, Ozeki, Michio, Kawamoto, Norio, Esaka, Yukihiro, Ohnishi, Hidenori

“…The loss‐of‐function variants of the human asparagine synthetase (ASNS) gene cause asparagine synthetase deficiency (ASNSD). Diagnosis of ASNSD requires…”
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Increased Plasma Adenosine Concentration in the Subacute Phase May Contribute to Attenuation of Left Ventricular Dilation in the Chronic Phase in Patients With Acute Myocardial Infarction by Hatasa, Masanori, Tanaka, Toshiki, Minatoguchi, Shingo, Yamada, Yoshihisa, Kanamori, Hiromitsu, Kawasaki, Masanori, Nishigaki, Kazuhiko, Esaka, Yukihiro, Uno, Bunji, Minatoguchi, Shinya

“…Background: Changes in the plasma adenosine concentration and the effects on left ventricular (LV) function and remodeling in patients with acute myocardial…”
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Preparation of Cyclic-1,N2-propano-2′-deoxyguanosine-d7 as an Internal Standard for ESI-MS/MS Determination of DNA Damage from Acetaldehyde by ESAKA, Yukihiro, KUNISHIMA, Saki, ARUGA, Hiromitsu, YAMAMOTO, Takuhei, MURAKAMI, Hiroya, TESHIMA, Norio, UNO, Bunji

“…Cyclic-1,N2-propano-2′-deoxyguanosine-d7 (CPr-dG-d7) was prepared as an isotopic internal standard (IS) for electrospray ionization tandem mass spectrometry…”
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Endogenous Adenosine May Be Related to Left Ventricular Dysfunction, Dilation, and Wall Thinning in Patients With Heart Disease by Kinomura, Yujiro, Tanaka, Toshiki, Aoyama, Takuma, Hatasa, Masanori, Minatoguchi, Shingo, Iwasa, Masamitsu, Yamada, Yoshihisa, Nawa, Takahide, Kanamori, Hiromitsu, Kawasaki, Masanori, Esaka, Yukihiro, Uno, Bunji, Nishigaki, Kazuhiko, Minatoguchi, Shinya

“…Background:The role of endogenous adenosine in cardiac patients is still unclear, so we investigated the relationship between the plasma adenosine…”
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Mechanistic Study on the Electrochemical Reduction of 9,10-Anthraquinone in the Presence of Hydrogen-bond and Proton Donating Additives by KATSUMI, Jiro, NAKAYAMA, Tatsushi, ESAKA, Yukihiro, UNO, Bunji

“…The electrochemical reduction of 9,10-anthraquinone (AQ) was investigated in CH3CN in both the absence and presence of the hydrogen-bond and proton donating…”
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Stepwise elusion method in micellar electrokinetic chromatography via sequential use of lithium perfluorooctadecyl sulfonate and lithium dodecyl sulfate by Esaka, Yukihiro, Rin, Fumiaki, Kobayashi, Miki, Osako, Ryohei, Murakami, Hiroya, Uno, Bunji

“…•LPFOS and LDS micelles function sequentially in a separation run.•Working periods of the each micelles are changed to optimize separation.•Simulation of…”
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