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1,767 results on '"OHARA, S."'

226. Calcium deposition in the skin of a hemodialysis patient with widespread skin necrosis

Author

Torigoe R, Jirô Arata, Ashizawa K, K Shimoe, Tada J, and Ohara S

Subjects
Adult, Male, Pathology, medicine.medical_specialty, Necrosis, medicine.drug_class, medicine.medical_treatment, Dermatology, Skin Diseases, Fibrin, Calcium deposition, Pathology and Forensic Medicine, Antiseptic, Renal Dialysis, Skin Ulcer, medicine, Humans, Skin, integumentary system, biology, business.industry, Calcinosis, General Medicine, Skin ulcer, medicine.disease, biology.protein, Kidney Failure, Chronic, Hemodialysis, medicine.symptom, Complication, business, Calcification
Abstract

Rapidly progressive skin necrosis involving large areas of the skin associated with extensive vascular calcification was observed in a 39-year-old male patient on chronic hemodialysis. Histological examination of the periphery of a skin ulcer showed that subepidermal arterioles were occluded with fibrin deposits and that calcification was demonstrated in subcutaneous small arteries and arterioles. Electron microscopically, electron-dense materials, granular, crystal-like, vacuolar, or laminated, were found not only in arterial walls of the periphery of an ulcer but also, to a lesser extent, in those of normal-appearing skin. The skin necrosis gradually healed with antiseptic topical treatments and the injection of recombinant erythropoietin. The relationship between the vascular lesions in hemodialysis patients and progressive skin necrosis is not well known, although a combination of local and systemic factors may play an important role in the development of vascular calcification and skin necrosis in uremic and hemodialysis patients.

Published
1991

227. Tumor Thrombus and Microvascular Invasion as Prognostic Factors in Renal Cell Carcinoma

Author

A Iwai, Tabata S, Ohara S, Yoshiki Hayashi, Eigoro Okajima, Hirotsugu Uemura, Katsunori Yoshida, Akihide Hirayama, Seiichiro Ozono, Yoshihiko Hirao, and Shoji Samma

Subjects
Cancer Research, Neoplasm Grading, Pathology, medicine.medical_specialty, business.industry, General Medicine, medicine.disease, Inferior vena cava, Tumor thrombus, Oncology, medicine.vein, Renal cell carcinoma, cardiovascular system, Medicine, Radiology, Nuclear Medicine and imaging, In patient, cardiovascular diseases, Thrombus, Renal vein, business, Histological examination
Abstract

The significance of two types of vascular invasion (macroscopic tumor thrombus into the renal vein or vena cava inferior and microvascular invasion) as prognostic factors in renal cell carcinoma is analyzed in 121 patients treated at the Department of Urology, Nara Medical University. The data indicate there to be close correlations between tumor thrombus, microvascular invasion and distant metastasis. In patients with tumor thrombus, however, the prognosis is not as poor when surgical removal of the tumor thrombus is successfully performed as when it is not. In contrast, the prognosis of patients with positive microvascular invasion is significantly worse than that of those with a negative finding. Microvascular invasion appears to be a significant prognostic factor in renal cell carcinoma in addition to well-known factors such as tumor stage, tumor grade, tumor thrombus and distant metastasis. To detect microvascular invasion, the histological examination should be extended to give as much detail as possible.

Published
1991

229. Low-temperature single crystal reflection spectra of forsterite

Author

Suto, H., primary, Sogawa, H., additional, Tachibana, S., additional, Koike, C., additional, Karoji, H., additional, Tsuchiyama, A., additional, Chihara, H., additional, Mizutani, K., additional, Akedo, J., additional, Ogiso, K., additional, Fukui, T., additional, and Ohara, S., additional

Published
2006
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231. Helicobacter pylori eradication prevents the development of gastric cancer - results of a long-term retrospective study in Japan

Author

KATO, M., primary, ASAKA, M., additional, NAKAMURA, T., additional, AZUMA, T., additional, TOMITA, E., additional, KAMOSHIDA, T., additional, SATO, K., additional, INABA, T., additional, Shirasaka, D., additional, OKAMOTO, S., additional, TAKAHASHI, S., additional, TERAO, S., additional, SUWAKI, K., additional, ISOMOTO, H., additional, YAMAGATA, H., additional, NOMURA, H., additional, YAGI, K., additional, SONE, Y., additional, URABE, T., additional, AKAMATSU, T., additional, OHARA, S., additional, TAKAGI, A., additional, MIWA, J., additional, and INATSUCHI, S., additional

Published
2006
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233. Analysis of cosmic ray anisotropy around 1015 eV using network observation data of air showers

Author

Tada, J., primary, Ochi, N., additional, Iyono, A., additional, Fujiwara, Y., additional, Wada, T., additional, Okei, K., additional, Yamashita, Y., additional, Tokiwa, M., additional, Matsumoto, H., additional, Morita, T., additional, Tsuji, S., additional, Nakatsuka, T., additional, Yamamoto, I., additional, Ohara, S., additional, Takahashi, N., additional, Konishi, T., additional, Omori, N., additional, Nakamura, A., additional, and Saito, K., additional

Published
2006
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238. ULTRASONIC SPLICING OF PLASTIC OPTICAL FIBERS.

Author

Ohara, S., Hayashi, N., Mizuno, Y., and Nakamura, K.

Subjects
PLASTIC optical fibers, ULTRASONIC waves, IRRADIATION, STRENGTH of materials, ULTRASONIC welding
Abstract

We demonstrate a new method for splicing plastic optical fibers by irradiation of mega-hertz ultrasonic waves. The lowest connection loss of 1.5 dB is obtained at 2 MHz, while the high mechanical strength of 59 N (close to the strength of the base polymer) is achieved at 1 MHz. We show that the loss and the strength are in the trade-off relation in this experiment, and that the duration of ultrasonic irradiation has a certain optimal value of approximately 1 second. [ABSTRACT FROM AUTHOR]

Published
2013

239. Effects of bestatin on the host immunity in patients treated for urogenital cancer

Author

Ozono S, Hirao Y, A Iwai, Ohara S, Hiramatsu T, H Aoyama, Eijiro Okajima, Yoshida K, Babaya K, and Kaoru Yamada

Subjects
Adult, Male, medicine.drug_class, Lymphocyte, Antibiotics, Tuberculin, law.invention, Leukocyte Count, Urogenital cancer, Randomized controlled trial, Adjuvants, Immunologic, Immunity, law, Leucine, medicine, Humans, Radiology, Nuclear Medicine and imaging, In patient, Aged, Skin Tests, Aged, 80 and over, Antibiotics, Antineoplastic, business.industry, Hematology, General Medicine, Middle Aged, Immunity, Innate, Lymphocyte Subsets, Peripheral, Clinical trial, medicine.anatomical_structure, Oncology, Immunology, Female, business, Urogenital Neoplasms
Abstract

To examine effects of bestatin on the host immunity of patients with urogenital cancer, 54 patients were randomized into 2 groups: bestatin treated and controls. In each group, the patients were divided into 2 subgroups: one which received basic treatment expected to greatly affect host immunity ('invasive treatment') while the other one received other types of basic treatment ('non-invasive treatment'). Peripheral lymphocyte, OKT 4/8 ratio and purified protein derivative (PPD) skin reaction were used as immunological markers. There were significant differences in the 'invasive' treatment group between bestatin treated patients and controls concerning lymphocyte counts and PPD skin reactions and in the 'non-invasive' group concerning lymphocyte counts and OKT 4/8 ratios. These results suggest that bestatin may potentiate host immunity in patients with urogenital cancer. Further studies on larger materials are, however, needed before more definite conclusions can be drawn.

Published
1990

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