Search Results - "Toma, Koji"

A Wearable Cellulose Acetate-Coated Mouthguard Biosensor for In Vivo Salivary Glucose Measurement by Arakawa, Takahiro, Tomoto, Keisuke, Nitta, Hiroki, Toma, Koji, Takeuchi, Shuhei, Sekita, Toshiaki, Minakuchi, Shunsuke, Mitsubayashi, Kohji

“…In this study, a cellulose acetate (CA) membrane is formed as an interference rejection membrane on a glucose sensor to measure glucose in saliva. Glucose in…”
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Plasmon-Enhanced Fluorescence Biosensors: a Review by Bauch, Martin, Toma, Koji, Toma, Mana, Zhang, Qingwen, Dostalek, Jakub

“…Surfaces of metallic films and metallic nanoparticles can strongly confine electromagnetic field through its coupling to propagating or localized surface…”
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Long-range surface plasmon aptasensor for label-free monitoring of vancomycin by Toma, Koji, Satomura, Yui, Iitani, Kenta, Arakawa, Takahiro, Mitsubayashi, Kohji

“…Vancomycin (VCM) causes poisoning symptoms at high concentrations; thus, therapeutic drug monitoring is recommended to measure and control blood levels…”
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Ultrasensitive Sniff-Cam for Biofluorometric-Imaging of Breath Ethanol Caused by Metabolism of Intestinal Flora by Iitani, Kenta, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji

“…We developed a gas-imaging system (sniff-cam) for gaseous ethanol (EtOH) with improved sensitivity. The sniff-cam was applied to measure the extremely low…”
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An acetone bio-sniffer (gas phase biosensor) enabling assessment of lipid metabolism from exhaled breath by Ye, Ming, Chien, Po-Jen, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji

“…Several volatile organic compounds (VOCs) are released from human breath or skin. Like chemical substances in blood or urine, some of these vapors can provide…”
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External ears for non-invasive and stable monitoring of volatile organic compounds in human blood by Toma, Koji, Suzuki, Shota, Arakawa, Takahiro, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…Volatile organic compounds (VOCs) released through skin (transcutaneous gas) has been increasing in importance for the continuous and real-time assessment of…”
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Real-time monitoring of skin ethanol gas by a high-sensitivity gas phase biosensor (bio-sniffer) for the non-invasive evaluation of volatile blood compounds by Arakawa, Takahiro, Suzuki, Takuma, Tsujii, Masato, Iitani, Kenta, Chien, Po-Jen, Ye, Ming, Toma, Koji, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…In this study, a highly sensitive and selective biochemical gas sensor (bio-sniffer) and real-time monitoring system with skin gas cell was constructed for the…”
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Sensitive and selective methanol biosensor using two-enzyme cascade reaction and fluorometry for non-invasive assessment of intestinal bacteria activity by Toma, Koji, Iwasaki, Kanako, Arakawa, Takahiro, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…For understanding the status of intestinal flora non-invasively, methanol (MeOH) has been attracting the attention. In this study, we have developed and…”
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Gas-Phase Biosensors (Bio-Sniffers) for Measurement of 2-Nonenal, the Causative Volatile Molecule of Human Aging-Related Body Odor by Iitani, Kenta, Mori, Hidehisa, Ichikawa, Kenta, Toma, Koji, Arakawa, Takahiro, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…The molecule 2-nonenal is renowned as the origin of unpleasant human aging-related body odor that can potentially indicate age-related metabolic changes. Most…”
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Fluorometric Biosniffer Camera “Sniff-Cam” for Direct Imaging of Gaseous Ethanol in Breath and Transdermal Vapor by Arakawa, Takahiro, Sato, Toshiyuki, Iitani, Kenta, Toma, Koji, Mitsubayashi, Kohji

“…Various volatile organic compounds can be found in human transpiration, breath and body odor. In this paper, a novel two-dimensional fluorometric imaging…”
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Switchable sniff-cam (gas-imaging system) based on redox reactions of alcohol dehydrogenase for ethanol and acetaldehyde in exhaled breath by Iitani, Kenta, Hayakawa, Yuuki, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji

“…Measuring the volatile organic compounds (VOCs) released from a human is a promising method for noninvasive disease screening and metabolism assessment…”
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Biochemical Methanol Gas Sensor (MeOH Bio-Sniffer) for Non-Invasive Assessment of Intestinal Flora from Breath Methanol by Toma, Koji, Iwasaki, Kanako, Zhang, Geng, Iitani, Kenta, Arakawa, Takahiro, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…Methanol (MeOH) in exhaled breath has potential for non-invasive assessment of intestinal flora. In this study, we have developed a biochemical gas sensor…”
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Evaluation for regional difference of skin-gas ethanol and sweat rate using alcohol dehydrogenase-mediated fluorometric gas-imaging system (sniff-cam) by Iitani, Kenta, Naisierding, Munire, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji

“…Skin gas that contains volatile metabolites (volatilome) is emanated continuously and is thus expected to be suitable for non-invasive monitoring. The aim of…”
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Mouthguard-Type Wearable Sensor for Monitoring Salivary Turbidity to Assess Oral Hygiene by Ichikawa, Kenta, Iitani, Kenta, Kawase, Gentaro, Toma, Koji, Arakawa, Takahiro, Dao, Dzung Viet, Mitsubayashi, Kohji

“…Salivary turbidity is a promising indicator for evaluating oral hygiene. This study proposed a wearable mouthguard-type sensor for continuous and unconstrained…”
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Biochemical Gas Sensors (Biosniffers) Using Forward and Reverse Reactions of Secondary Alcohol Dehydrogenase for Breath Isopropanol and Acetone as Potential Volatile Biomarkers of Diabetes Mellitus by Chien, Po-Jen, Suzuki, Takuma, Tsujii, Masato, Ye, Ming, Minami, Isao, Toda, Kanako, Otsuka, Hiromi, Toma, Koji, Arakawa, Takahiro, Araki, Kouji, Iwasaki, Yasuhiko, Shinada, Kayoko, Ogawa, Yoshihiro, Mitsubayashi, Kohji

“…This study describes two biosniffers to determine breath acetone and isopropanol (IPA) levels and applies them for breath measurement in healthy subjects and…”
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Real-Time Continuous Monitoring of Oral Soft Tissue Pressure with a Wireless Mouthguard Device for Assessing Tongue Thrusting Habits by Matsumoto, Hidekazu, Tomoto, Keisuke, Kawase, Gentaro, Iitani, Kenta, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji, Moriyama, Keiji

“…In orthodontics, understanding the pressure of oral soft tissues on teeth is important to elucidate the cause and establish treatment methods. We developed a…”
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Fluorometric Sniff-Cam (Gas-Imaging System) Utilizing Alcohol Dehydrogenase for Imaging Concentration Distribution of Acetaldehyde in Breath and Transdermal Vapor after Drinking by Iitani, Kenta, Sato, Toshiyuki, Naisierding, Munire, Hayakawa, Yuuki, Toma, Koji, Arakawa, Takahiro, Mitsubayashi, Kohji

“…Understanding concentration distributions, release sites, and release dynamics of volatile organic compounds (VOCs) from the human is expected to lead to…”
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Repeated immunosensing by a dithiobis(succinimidyl propionate)-modified SAW device by Toma, Koji, Oishi, Koki, Yoshimura, Naoyuki, Arakawa, Takahiro, Yatsuda, Hiromi, Mitsubayashi, Kohji

“…The possibility of dithiobis(succinimidyl propionate) (DSP) for repeated immunoassay with a surface acoustic wave (SAW) immunosensor was explored. In the…”
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Ultra-Sensitive Isopropanol Biochemical Gas Sensor (Bio-Sniffer) for Monitoring of Human Volatiles by Chien, Po-Jen, Suzuki, Takuma, Ye, Ming, Toma, Koji, Arakawa, Takahiro, Iwasaki, Yasuhiko, Mitsubayashi, Kohji

“…Our groups have previously developed a biochemical gas sensor to measure isopropanol (IPA) in exhaled air and have applied it for breath IPA investigation in…”
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Glucose-driven Monolithic Polydimethylsiloxane Decompression Unit for Drug Release Device Using Plasma-activated Bonding Technology by Arakawa, Takahiro, Kurihara, Koji, Mori, Daisuke, Koji, Toma, Yano, Kazuyoshi, Mitsubayashi, Kohji

“…A new enzymatic chemo-mechanical actuator that can convert the chemical energy of glucose into mechanical energy for an autonomous drug release system without…”
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