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  1. Article

    Open Access

    Cell-compatible isotonic freezing media enabled by thermo-responsive osmolyte-adsorption/exclusion polymer matrices

    During the long-term storage of cells, it is necessary to inhibit ice crystal formation by adding cryoprotectants. Non-cell-permeable cryoprotectants have high osmotic pressure which dehydrates cells, indirect...

    Yui Kato, Yuya Matsuda, Takuya Uto, Daisuke Tanaka in Communications Chemistry (2023)

  2. No Access

    Article

    Evaluation of newly designed flushing techniques for on-site remediation of arsenic-contaminated excavated debris

    Excavated debris (soil and rock) contaminated with geogenic arsenic (As) is an increasing concern for regulatory organizations and construction stakeholders. Chelator-assisted soil flushing is a promising meth...

    Shafiqur Rahman, Makoto Saito in Environmental Science and Pollution Resear… (2023)

  3. No Access

    Article

    Large scale production of 64Cu and 67Cu via the 64Zn(n, p)64Cu and 68Zn(n, np/d)67Cu reactions using accelerator neutrons

    Both 64Cu and 67Cu are promising radionuclides in nuclear medicine. Production yields of these radionuclides were quantified by irradiating 55.4 g of natural zinc with accelerator neutrons. Clinically suitable 64

    Masako Kawabata, Shoji Motoishi, Akio Ohta in Journal of Radioanalytical and Nuclear Che… (2021)

  4. Article

    Open Access

    Nano spin-diodes using FePt-NDs with huge on/off current ratio at room temperature

    Spin transistors have attracted tremendous interest as new functional devices. However, few studies have investigated enhancements of the ON/OFF current ratio as a function of the electron spin behavior. Here,...

    Katsunori Makihara, Takeshi Kato, Yuuki Kabeya, Yusuke Mitsuyuki in Scientific Reports (2016)

  5. Article

    Open Access

    Short-term change of carotid intima-media thickness after treatment of hyperglycemia in patients with diabetes: a cross-sectional study

    The carotid artery intima-media thickness (CIMT) has been used as a predictor of cardiovascular events, but it remains unclear whether CIMT can change over the short term. We evaluated changes of CIMT in patie...

    Ayumi Ten**, Yoshio Nagai, Sayaka Yuji, Satoshi Ishii, Hiroyuki Kato in BMC Research Notes (2016)

  6. No Access

    Article

    Systemic oxygenation weakens the hypoxia and hypoxia inducible factor 1α-dependent and extracellular adenosine-mediated tumor protection

    Intratumoral hypoxia and hypoxia inducible factor-1α (HIF-1-α)-dependent CD39/CD73 ectoenzymes may govern the accumulation of tumor-protecting extracellular adenosine and signaling through A2A adenosine recept...

    Stephen M. Hatfield, Jorgen Kjaergaard, Dmitriy Lukashev in Journal of Molecular Medicine (2014)

  7. No Access

    Chapter

    The Hypoxia-adenosinergic Immunosuppression and Redirection of Immune Response in Tumor Microenvironment

    In this chapter, we will focus on physiological regulators of activated immune cells in cancerous tissue microenvironments. This consideration started when we were contemplating the molecular mechanism that wo...

    Akio Ohta, Michail Sitkovsky in Tumor-Induced Immune Suppression (2014)

  8. No Access

    Article

    An interesting case with obese and ketosis-prone type 2 diabetes suggesting metformin action on the adipose tissue

    We report a 63-year-old obese ketosis-prone diabetic woman who was being treated with metformin and a low dose of insulin. We performed two hyperinsulinemic-euglycemic clamp studies followed by an oral glucose...

    Yoshio Nagai, Hisashi Fukuda, Yukiyoshi Sada, Shiko Asai in Diabetology International (2013)

  9. No Access

    Article

    Cold-loaded pain sensation test and current perception threshold for evaluating diabetic neuropathy

    We previously designed and reported a simple new method (the cold-loaded pain sensation test) for quantitative evaluation of the function of small nerve fibers. In the study reported here, we investigated the ...

    Akio Ohta, Hiroyuki Kato, Yuta Nakamura, Ayumi Ten** in Diabetology International (2013)

  10. No Access

    Article

    Targeting the hypoxia-adenosinergic signaling pathway to improve the adoptive immunotherapy of cancer

    The recent approval by the FDA of cancer vaccines and drugs that blockade immunological negative regulators has further enhanced interest in promising approaches of the immunotherapy of cancer. However, the di...

    Michail Sitkovsky, Akio Ohta in Journal of Molecular Medicine (2013)

  11. No Access

    Article

    Layer Transfer and Simultaneous Activation of Phosphorus Atoms in Silicon Films by Near-Infrared Semiconductor Diode Laser Irradiation

    Layer transfer and simultaneous activation of phosphorus atoms in Si films induced by semiconductor diode laser (SDL) irradiation have been investigated. Phosphorus-doped a-Si films supported by columns on a s...

    Yoshitaka Kobayashi, Kohei Sakaike, Shogo Nakamura in MRS Online Proceedings Library (2012)

  12. No Access

    Chapter

    Methylxanthines, Inflammation, and Cancer: Fundamental Mechanisms

    Methylxanthines are an integral part of everyday food and drink consumption even though the majority of humans do not identify them by their chemical name. The breakthrough in understanding the action(s) of me...

    Akio Ohta, Michail Sitkovsky in Methylxanthines (2011)

  13. Article

    Open Access

    Critical Role of Hypoxia and A2A Adenosine Receptors in Liver Tissue-Protecting Physiological Anti-Inflammatory Pathway

    Whole body exposure of wild type control littermates and A2A adenosine receptor (A2AR) gene deleted mice to low oxygen containing inspired gas mixture allowed the investigation of the mechanism that controls i...

    Alexander Choukèr, Manfred Thiel, Dmitriy Lukashev, Jerrold M. Ward in Molecular Medicine (2008)

  14. Article

    Open Access

    From ‘Hellstrom Paradox–to anti-adenosinergic cancer immunotherapy

    Cancer therapy by endogenous or adoptively transferred anti-tumor T cells is considered complementary to conventional cancer treatment by surgery, radiotherapy or chemotherapy. However, the scope of promising ...

    Dmitriy Lukashev, Michail Sitkovsky, Akio Ohta in Purinergic Signalling (2007)

  15. Article

    Caveats and cautions for the therapeutic targeting of the anti-inflammatory A2 adenosine receptors

    Akio Ohta, Michail Sitkovsky in Nature Reviews Drug Discovery (2006)

  16. No Access

    Article

    Unique incorporation behavior of amino acid-type surfactant into phospholipid vesicle membrane

    The incorporation behavior of some anionic surfactants, including amino acid-type surfactants, on phospholipid vesicles was investigated. This was done by measuring the release of a vesicle-entrapped fluoresce...

    Kazuma Yasuhara, Akio Ohta, Yoshihiro Asakura, Taishi Kodama in Colloid and Polymer Science (2005)

  17. No Access

    Article

    Krafft temperature and enthalpy of solution of N-acyl amino acid surfactants and their racemic modifications: effect of the counter ion

    The Krafft temperatures and enthalpies of solution of N-hexadecanoyl alaninate and valinate, and N-tetradecanoyl phenylalaninate were obtained from differential scanning calorimetry. The Krafft temperature of N-a...

    Akio Ohta, Satoru Nakashima, Hiroki Matsuyanagi in Colloid and Polymer Science (2003)

  18. No Access

    Article

    Krafft temperature and enthalpy of solution of N-acyl amino acid surfactants and their racemic modifications: effect of the amino acid residue

    The Krafft temperatures and the enthalpies of solution of six kinds of N-hexadecanoyl amino acid surfactant (Gly, Ala, Val, Leu, Ile, and Phe) were obtained from both solubility measurements and differential sca...

    Akio Ohta, Noriaki Ozawa, Satoru Nakashima, Tsuyoshi Asakawa in Colloid and Polymer Science (2003)

  19. No Access

    Article

    Role of G-protein-coupled adenosine receptors in downregulation of inflammation and protection from tissue damage

    Inappropriate or prolonged inflammation is the main cause of many diseases1; for this reason it is important to understand the physiological mechanisms that terminate inflammation in vivo2. Agonists for several G

    Akio Ohta, Michail Sitkovsky in Nature (2001)

  20. No Access

    Article

    Calorimetric Study of Micelle Formation in Polyethylene Glycol Monooctyl Ether Solution

    The micellar solutions of polyethylene glycol monooctyl ethers C8Ej (j = 3,4,5) were investigated by employing the high-precision isothermal titration microcalorimeter at seven temperatures from 10° to 40°C. From...

    Akio Ohta, Takanori Takiue, Norihiro Ikeda, Makoto Aratono in Journal of Solution Chemistry (2001)

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