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40 results on '"Hamada, Yuichi"'

3. Noncanonical splice‐site variant in peripheral myelin protein 22 gene (PMP22) in a patient with hereditary neuropathy with liability to pressure palsies

Author

Kawamoto, Norifumi, primary, Hamada, Yuichi, additional, Kobayashi, Shunsuke, additional, Naruse, Hiroya, additional, Ishiura, Hiroyuki, additional, Matsukawa, Takashi, additional, Mitsui, Jun, additional, Tsuji, Shoji, additional, Sonoo, Masahiro, additional, and Toda, Tatsushi, additional

Published
2023
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12. Thermal response in thermal energy storage material around heat transfer tubes: effect of additives on heat transfer rates

Author

Hamada, Yuichi, Ohtsu, Wataru, and Fukai, Jun

Subjects
Earth sciences, Petroleum, energy and mining industries
Abstract

The effects of carbon-fiber chips and carbon brushes as additives on the thermal conductivity enhancement of phase change materials (PCMs) using in latent heat thermal energy storage are investigated experimentally and numerically by considering the wall effect of the additives. The carbon-fiber chips are effective for improving the heat transfer rate in PCMs. However, the thermal resistance near the heat transfer surface is higher than that for the carbon brushes. As a result, the overall heat transfer rate for the fiber chips is lower than that for the carbon brushes. Consequently, the carbon brushes are superior to the fiber chips for the thermal conductivity enhancement under the present experimental conditions. The carbon brushes are moreover applied to the packed beds of particles to overcome their low thermal conductivity in chemical heat pump/storage. The carbon brushes essentially improve the heat transfer characteristics in the packed beds, though the thermal resistance is observed because the particles obstruct contact between the fibers and the heat transfer surfaces.

Published
2003

23. Endothelin ETA Receptor in Human Skins with Keloid and Hypertrophic Scar

Author

Hamada, Yuichi, Himeno, Akihiko, Yamaguchi, Hisa, Hirano, Akiyoshi, and Fujii, Tohru

Subjects
hypertrophic scar (human), ETA receptor, wound, cardiovascular system, endothelin (ET), in situ, quantitative receptor autoradiography, human skin, skin and connective tissue diseases, healing, hybridization, keloid
Abstract

Endothelins (ETs) work as growth factors for fibroblastic growth. Keloids are clinically unpleasant scars within the skin that grow beyond the confines of the original wound. We compared the expression of ET receptors between human skins with hypertrophic scars and keloids, by using our quantitative receptor imaging system. The ET receptor binding sites were distributed in skin areas anatomically corresponding to the epidermis, the superficial and deep dermis, and the vascular bed. The ETA receptor was apparently observed in the skin areas, whereas the ETB receptor was only slightly detected, as deduced from the finding that mRNA encoding the human ETA receptor is expressed in the fibroblast and the vascular bed. The ETA receptor densities of keloid and highly hypertrophic scar were significantly higher than those of normal skin and moderately and mildly hypertrophic scar. There seemed to be no differences in the density between keloid and highly hypertrophic scar. In a keloid skin we noted a possible existence of atypical vascular bed ETA receptor with a low affinity to ETA antagonist of PD151242 and FR139317. The ETA receptor of endogenous growth factors possibly play an etiological role in dysfunctions of the fibroblast in hypertrophic scars, and a typical ETA receptor may be related to the growth of keloid., Acta medica Nagasakiensia. 1999, 44(1-2), p.15-23

Published
1999

24. Fatal possible toxic shock syndrome in an adult following 15% scald burn

Author

Miyazato Osamu, Hamada Yuichi, Fujioka Masaki, Sakai Takahiro, Yamamoto Tsuneyuki, and Nishimura Gozo

Subjects
Male, Reconstructive surgery, medicine.medical_specialty, Wound Healing, business.industry, Toxic shock syndrome, General Medicine, Middle Aged, Staphylococcal Infections, Critical Care and Intensive Care Medicine, medicine.disease, Shock, Septic, Surgery, Fatal Outcome, Emergency Medicine, Medicine, Humans, business, Burns
Abstract

Fatal possible toxic shock syndrome in an adult following 15% scald burn Fujioka Masaki a,∗, Nishimura Gozo b, Hamada Yuichi b, Sakai Takahiro b, Miyazato Osamu b, Yamamoto Tsuneyuki b a Department of Plastic and Reconstructive Surgery, National Nagasaki Medical Center, 1001-1 Kuhara 2 Ohmura City, Nagasaki 856-8562, Japan b Department of Plastic and Reconstructive Surgery, Fukuoka Tokushukai Medical Center, 4-5 Suku-Kita Kasuga City, Fukuoka 816-0864, Japan

Published
2003

36. Split-finger syndrome in amyotrophic lateral sclerosis.

Author

Masahiro Sonoo, Kazusa Takahashi, Yuichi Hamada, Keiichi Hokkoku, Shunsuke Kobayashi, Sonoo, Masahiro, Takahashi, Kazusa, Hamada, Yuichi, Hokkoku, Keiichi, and Kobayashi, Shunsuke

Subjects
AMYOTROPHIC lateral sclerosis, SPINAL muscular atrophy, MOTOR unit, FLEXOR muscles, MYONEURAL junction, FRONTOTEMPORAL lobar degeneration, INCLUSION body myositis, RESEARCH, FINGERS, SKELETAL muscle, RESEARCH methodology, CASE-control method, RETROSPECTIVE studies, MEDICAL cooperation, EVALUATION research, COMPARATIVE studies, ELECTROMYOGRAPHY
Published
2020
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40. Utility of the Repetitive Nerve Stimulation Test and Needle EMG in the Trapezius Muscle for the Early Diagnosis of ALS.

Author

Takahashi K, Hamada Y, Kobayashi M, Kobayashi S, Kanbayashi T, Hatanaka Y, Nakayama T, Imafuku I, Matsuno H, Iguchi Y, Katada F, Fukutake T, Ando T, Mikata T, Usui T, Uchino K, Nishiyama K, and Sonoo M

Subjects
Humans, Male, Female, Middle Aged, Aged, Retrospective Studies, Adult, Early Diagnosis, Electromyography methods, Amyotrophic Lateral Sclerosis physiopathology, Amyotrophic Lateral Sclerosis diagnosis, Electric Stimulation, Superficial Back Muscles physiopathology, Sensitivity and Specificity
Abstract

Objectives: To document the utility of decremental responses in the repetitive nerve stimulation test (RNS) and spontaneous activities in needle electromyography (EMG) in the trapezius muscle for the diagnosis of amyotrophic lateral sclerosis., Methods: Subjects were retrospectively identified from our EMG database. Cervical spondylosis was represented as a disease control group. We investigated the sensitivity and specificity of RNS and EMG in the trapezius muscle and those of diagnostic criteria including the Gold Coast criteria (GCC)., Results: We reviewed 120 patients with amyotrophic lateral sclerosis and 17 patients with cervical spondylosis. "RNS or EMG" achieved the highest sensitivity (85%). The specificity was the highest for RNS (94%). Addition of RNS of the deltoid muscle achieved 98% sensitivity in the upper-limb onset amyotrophic lateral sclerosis. The sensitivity of the GCC was very high (88%)., Conclusions: Neurophysiological parameters investigated in this study having close to 100% specificities or sensitivities are useful as complements to the GCC., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Published
2024
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