Katsuya Tanaka

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This paper describes a tele-endoscopic surgical system with force feedback capability. The system consists of multi-media cockpit, surgical site and communication link. The multi-media cockpit is equipped with force feedback type master manipulators, visual and auditory information presentation apparatuses, and foot switches. A slave manipulator with 3 arms(More)
BACKGROUND Reactive oxygen species (ROS) contribute to myocardial protection during ischemic preconditioning, but the role of the ROS in protection against ischemic injury produced by volatile anesthetics has only recently been explored. We tested the hypothesis that ROS mediate isoflurane-induced preconditioning in vivo. METHODS(More)
Several robotic surgical systems have been developed for minimally-invasive surgery including commercialized products such as da Vinci and ZEUS. We have developed a minimally-invasive surgical system, which had performed remote surgery experiments for four times until now (performed on pigs over 150 km in Japan). In this paper, two approaches that extend(More)
This paper synthesizes existing information and knowledge on subsurface environments to understand the major cause and effect relationships of subsurface environmental issues by using the DPSIR (Driving force-Pressure-Status-Impact-Response) approach as the framework of analysis. Description is given to the major subsurface environmental issues common among(More)
Reactive oxygen species (ROS) mediate volatile anesthetic preconditioning. We tested the hypothesis that isoflurane (ISO) generates ROS from electron transport chain complexes I and III. Rabbits (n = 55) underwent 30 min coronary artery occlusion followed by 3 h reperfusion and received 0.9% saline, the complex I inhibitor diphenyleneiodonium (DPI; 1.5(More)
Volatile anesthetics stimulate, but hyperglycemia attenuates, the activity of mitochondrial ATP-regulated K(+) channels. We tested the hypothesis that diabetes mellitus interferes with isoflurane-induced preconditioning. Acutely instrumented, barbiturate-anesthetized dogs were randomly assigned to receive 0, 0.32, or 0.64% end-tidal concentrations of(More)
The growth in federal conservation programs has created a need for policy modeling frameworks capable of measuring micro-level behavioral responses and macro-level landscape changes. This paper presents an empirical model that predicts crop choices, crop rotations, and conservation tillage adoption as a function of conservation payment levels, profits, and(More)
Pharmacological preconditioning, including that with geranylgeranylacetone (GGA) and volatile anesthetics, has been shown to confer cardiac protection from ischemia/reperfusion injury although the mechanisms for this protection are poorly understood. Caveolins, integral membrane proteins that act as scaffolding proteins in caveolar membranes, localize(More)
BACKGROUND Exendin-4, an exogenous glucagon-like peptide-1 receptor (GLP-1R) agonist, protects the heart from ischemia/reperfusion injury. However, the mechanisms for this protection are poorly understood. Caveolae, sarcolemmal invaginations, and caveolins, scaffolding proteins in caveolae, localize molecules involved in cardiac protection. We tested the(More)