1
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Affiliation(s)
- M. Morinaga
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - N. Yukawa
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - H. Ezaki
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - H. Adachi
- Hyogo University of Teacher Education, Yashiro-cho, Kato-gun, Hyogo 673-14, Japan
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2
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Affiliation(s)
- M. Morinaga
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - N. Yukawa
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - H. Ezaki
- Toyohashi University of Technology, Toyohashi, Aichi 440, Japan
| | - H. Adachi
- Hyogo University of Teacher Education, Yashiro-cho, Kato-gun, Hyogo 673-14, Japan
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3
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Kawanishi H, Tsuchiya T, Nishiki M, Sugiyama M, Ezaki H. Removal of Protein-Bound Substance in Hepatic Failure: Polyetherurethane Sheet Embedded with Powdered Charcoal (UPC). Int J Artif Organs 2018. [DOI: 10.1177/039139888400700611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- H. Kawanishi
- Department of Surgery, Hroshima University School of Medicine
| | | | - M. Nishiki
- Department of Surgery, Hroshima University School of Medicine
| | - M. Sugiyama
- Japan Medical Supply Co. Ltd. Hiroshima, Japan
| | - H. Ezaki
- Department of Surgery, Hroshima University School of Medicine
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4
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Fujinaga T, Nishida T, Miyazaki M, Shigekawa M, Ikezawa K, Iwahashi K, Inoue T, Yamada T, Ezaki H, Shinzaki S, Yakushijin T, Iijima H, Tsujii M, Takehara T. Acute suppurative pancreatic ductitis associated with pancreatic duct obstruction. Endoscopy 2014; 45 Suppl 2 UCTN:E135. [PMID: 23716098 DOI: 10.1055/s-0032-1326450] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- T Fujinaga
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Osaka, Japan
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5
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Amenomori M, Migita K, Miyashita T, Yoshida S, Ito M, Eguchi K, Ezaki H. Cytomegalovirus-associated hemophagocytic syndrome in a patient with adult onset Still's disease. Clin Exp Rheumatol 2005; 23:100-2. [PMID: 15789896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Reactive hemophagocytic syndrome (HPS) is characterized by hemophagocytosis by activated histiocytes, resulting in pancytopenia and liver dysfunction. We describe a patient with adult onset Still's disease (AOSD) in whom HPS developed. An 80-year-old Japanese woman with high fever, arthralgia, skin rash, and pleuritis was admitted to our hospital for further examination. She was diagnosed with AOSD and steroid therapy was initiated. During the course of steroid therapy, a re-elevation of serum ferritin levels and a marked increase in serum transaminase were observed. Bone marrow aspiration revealed an increase in the number of histiocytes with hemophagocytosis and cytomegalovirus (CMV)-positive leukocytes were detected. At this time we diagnosed the patient as having virus-associated hemophagocytic syndrome (VAHS) and elevated levels of trasaminase and ferritin were normalized by ganciclovir treatment. Reactive HPS occurs in cases of active AOSD. However, it should be noted that HPS may be accompanied by opportunistic infections during immunosuppressive therapy requiring prompt antibiotic therapy.
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Affiliation(s)
- M Amenomori
- Department of General Medicine, National Nagasaki Medical Center, Omura, Japan
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6
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Ezaki H, Hanamura E, Yamamoto Y. Ezaki et al. reply:. Phys Rev Lett 2000; 85:1137. [PMID: 10991494 DOI: 10.1103/physrevlett.85.1137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2000] [Indexed: 05/23/2023]
Affiliation(s)
- H Ezaki
- Faculty of Engineering Tokyo Institute of Polytechnics 1583 Iiyama Atsugi, Kanagawa 243-029, Japan
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7
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Neriishi K, Ezaki H, Arihiro K, Okamoto H. Thyroid lymphoma of mucosa-associated lymphoid tissue with monoclonal gammopathy occurring in an atomic bomb survivor: report of a case. Surg Today 2000; 30:202-6. [PMID: 10664351 DOI: 10.1007/s005950050045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
We describe herein a case of thyroid lymphoma of the mucosa-associated lymphoid tissue (MALT) with monoclonal gammopathy (IgG kappa), occurring in a woman who was exposed to atomic-bomb (A-bomb) radiation 1.5 km from the explosion of the hypocenter when she was 31 years old. Her estimated radiation dose was 0.2 Gy. A total thyroidectomy resulted in the disappearance of monoclonal gammopathy, thus indicating extramedullary monoclonal gammopathy of the thyroid. Three patterns of protein electrophoresis, i.e., normal, the appearance of monoclonal immunoglobulins, and their disappearance after the total thyroidectomy, were consecutively recorded. The utility of checking of the monoclonal immunoglobulin levels after a thyroidectomy due to lymphoma of the MALT to monitor recurrence is therefore suggested. This lymphoma is most likely not related to the patient's A-bomb radiation exposure.
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MESH Headings
- Aged
- Aged, 80 and over
- Female
- Humans
- Immunoglobulin kappa-Chains/analysis
- Japan
- Lymphoma, B-Cell, Marginal Zone/diagnosis
- Lymphoma, B-Cell, Marginal Zone/etiology
- Lymphoma, B-Cell, Marginal Zone/surgery
- Neoplasms, Radiation-Induced/diagnosis
- Neoplasms, Radiation-Induced/etiology
- Neoplasms, Radiation-Induced/surgery
- Nuclear Warfare
- Paraproteinemias/diagnosis
- Paraproteinemias/etiology
- Paraproteinemias/surgery
- Radiation Dosage
- Radioactive Fallout/adverse effects
- Survival
- Thyroid Neoplasms/diagnosis
- Thyroid Neoplasms/etiology
- Thyroid Neoplasms/surgery
- Thyroidectomy
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Affiliation(s)
- K Neriishi
- Department of Clinical Studies, Radiation Effects Research Foundation, 5-2 Hijiyama Park, Minami-ku, Hiroshima 732-0815, Japan
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8
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Ezaki O, Takahashi M, Shigematsu T, Shimamura K, Kimura J, Ezaki H, Gotoh T. Long-term effects of dietary alpha-linolenic acid from perilla oil on serum fatty acids composition and on the risk factors of coronary heart disease in Japanese elderly subjects. J Nutr Sci Vitaminol (Tokyo) 1999; 45:759-72. [PMID: 10737229 DOI: 10.3177/jnsv.45.759] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Although important roles of dietary n-3 fatty acids in the prevention of coronary heart disease (CHD) have been suggested, long-term effects of dietary alpha-linolenic acid (ALA, 18:3n-3) have not yet been established under controlled conditions. We tested whether a moderate increase of dietary ALA affects fatty acids composition in serum and the risk factors of CHD. Oxidized LDL (OxLDL) was directly measured by ELISA using antibody specific to OxLDL. By merely replacing soybean cooking oil (SO) with perilla oil (PO) (i.e., increasing 3 g/d of ALA), the n-6/n-3 ratio in the diet was changed from 4:1 to 1:1. Twenty Japanese elderly subjects were initially given a SO diet for at least 6 mo (baseline period), a PO diet for 10 mo (intervention period), and then returned to the previous SO diet (washout period). ALA in the total serum lipid increased from 0.8 to 1.6% after 3 mo on the PO diet, but EPA and DHA increased in a later time, at 10 mo after the PO diet, from 2.5 to 3.6% and 5.3 to 6.4%, respectively (p<0.05), and then returned to baseline in the washout period. In spite of increases of serum n-3 fatty acids, the OxLDL concentration did not change significantly when given the PO diet. Body weight, total serum cholesterol, triacylglycerol, glucose, insulin and HbA1c concentrations, platelet count and aggregation function, prothrombin time, partial thromboplastin time, fibrinogen and PAI-1 concentration, and other routine blood analysis did not change significantly when given the PO diet. These data indicate that, even in elderly subjects, a 3 g/d increase of dietary ALA could increase serum EPA and DHA in 10 mo without any major adverse effects.
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Affiliation(s)
- O Ezaki
- Division of Clinical Nutrition, National Institute of Health and Nutrition, Tokyo, Japan.
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9
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Goto H, Miyafuku S, Ezaki H, Matsumoto T, Yatsuhashi H, Inoue C, Koga M, Yano N. [Case of post-Chlamydia perihepatitis adhesion (Fitz-Hugh-Curtis syndrome) with effective peritoneoscopic diagnosis]. Nihon Naika Gakkai Zasshi 1999; 88:701-3. [PMID: 10341657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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10
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11
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Yoshimoto Y, Ezaki H, Etoh R, Hiraoka T, Akiba S. Prevalence rate of thyroid diseases among autopsy cases of the atomic bomb survivors in Hiroshima, 1951-1985. Radiat Res 1995; 141:278-86. [PMID: 7871154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To examine the radiogenic risk of latent thyroid cancer, thyroid adenoma, colloid/adenomatous goiter and chronic thyroiditis, the data for 3821 subjects collected in the course of autopsies of atomic bomb survivors in Hiroshima from 1951 to 1985 by the Radiation Effects Research Foundation (RERF) were analyzed using a logistic model. About 80% of the autopsies were performed at RERF and the remainder at local hospitals. The frequencies of the above diseases were not associated with whether the underlying cause of death was cancer. However, note that our results may be influenced by potentially biasing factors associated with autopsy selection. The relative frequency of latent thyroid cancer (greatest dimension < or = 1.5 cm but detectable on a routine microscopic slide of the thyroid gland) increased as the radiation dose increased and was about 1.4-fold greater at 1 Gy than in the 0-Gy dose group. The relative occurrence of thyroid adenoma also increased as radiation dose increased, and was about 1.5-fold greater at 1 Gy than in the 0-Gy dose group. Sex, age at the time of the bombing or period of observation did not significantly modify the radiogenic risks for thyroid adenoma or latent thyroid cancer. No statistically significant association was found between radiation exposure and the rates of colloid/adenomatous goiter and chronic thyroiditis. The possible late effect of atomic bomb radiation on the frequency of benign thyroid diseases is discussed on the basis of these data.
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Affiliation(s)
- Y Yoshimoto
- Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan
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12
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Ezaki H, Tokihiro T, Hanamura E. Excitonic n-string in linear chains: Electronic structure and optical properties. Phys Rev B Condens Matter 1994; 50:10506-10515. [PMID: 9975148 DOI: 10.1103/physrevb.50.10506] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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13
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Ezaki H, Morinaga M, Watanabe S, Saito J. Hydrogen overpotential for intermetallic compounds, TiAl, FeAl and NiAl, containing 3d transition metals. Electrochim Acta 1994. [DOI: 10.1016/0013-4686(94)85163-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Ezaki H, Morinaga M, Watanabe S. Hydrogen overpotential for transition metals and alloys, and its interpretation using an electronic model. Electrochim Acta 1993. [DOI: 10.1016/0013-4686(93)85012-n] [Citation(s) in RCA: 91] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Ueno Y, Toba T, Ezaki H, Isobe J, Inoue R, Ito M, Io K, Asano F, Nishio I, Yamaguchi M. [Mitral valve replacement with concomitant coronary bypass for the papillary muscle rupture after acute myocardial infarction in situs inversus]. Kyobu Geka 1992; 45:1031-4. [PMID: 1434245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A 53-year-old man, who was known to have situs inversus totalis all of his life, had acute myocardial infarction complicated by partial rupture of the posterior papillary muscle causing mitral regurgitation and pulmonary edema. The patient underwent mitral valve replacement (Omnicarbon 27 mm) with concomitant aortocoronary saphenous vein bypass, and he is now doing well 9 months following the operation. To our knowledge, this is the first case of the successful mitral valve replacement and concomitant aortocoronary saphenous vein bypass on a patient with situs inversus totalis (mirror-image dextrocardia) in Japan.
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Affiliation(s)
- Y Ueno
- Department of Surgery, Gifu National Hospital
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16
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Ezaki H, Ebihara S, Fujimoto Y, Iida F, Ito K, Kuma K, Izuo M, Makiuchi M, Oyamada H, Matoba N. Analysis of thyroid carcinoma based on material registered in Japan during 1977-1986 with special reference to predominance of papillary type. Cancer 1992; 70:808-14. [PMID: 1643612 DOI: 10.1002/1097-0142(19920815)70:4<808::aid-cncr2820700415>3.0.co;2-l] [Citation(s) in RCA: 62] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND As geographic differences have been observed in the characteristics of thyroid carcinoma, an analysis was made on thyroid carcinoma in the iodine rich country of Japan. METHODS A total of 10,973 patients with histologically confirmed thyroid carcinoma registered in Japan from 1977-1986 were analyzed. Cases detected incidentally at autopsy and cases of nonepithelial tumor were excluded. This series included approximately 27% of all thyroid carcinoma cases in Japan. RESULTS AND CONCLUSIONS Histologic distribution showed that papillary carcinoma accounted for 78.4% of cases, follicular carcinoma accounted for 17.2%, medullary carcinoma for 1.4%, squamous cell carcinoma for 0.3%, and anaplastic carcinoma for 2.7%. There is a tendency in Japan to diagnose papillary carcinoma as follicular carcinoma and to diagnose malignant lymphoma as anaplastic carcinoma. It was considered that the percentage of papillary carcinoma was higher and the percentage of follicular carcinoma and anaplastic carcinoma was lower than foregoing values. The characteristics of thyroid carcinoma in Japan were described, and the low incidence of nonpapillary carcinoma compared with papillary carcinoma was discussed in relation to iodine excess as an etiologic factor.
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Affiliation(s)
- H Ezaki
- Thyroid Cancer Registration Committee, Japan Society of Thyroid Surgery, Matsumoto
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17
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Fujiwara S, Sposto R, Ezaki H, Akiba S, Neriishi K, Kodama K, Hosoda Y, Shimaoka K. Hyperparathyroidism among atomic bomb survivors in Hiroshima. Radiat Res 1992; 130:372-8. [PMID: 1594765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
To determine the effect of exposure to atomic bomb radiation on the occurrence of hyperparathyroidism, the prevalence was determined among a population of 3,948 atomic bomb survivors and their controls in Hiroshima. The diagnosis of hyperparathyroidism was based upon histopathological findings or the presence of consistent hypercalcemia and elevated levels of serum parathyroid hormone. Primary hyperparathyroidism was diagnosed in 19 persons (3 males, 16 females). Females had approximately a threefold higher overall prevalence of hyperparathyroidism than males (P less than 0.05). The prevalence rates of hyperparathyroidism increased with radiation dose (chi2(1) = 12, P less than 0.001) after adjusting for sex and age at the time of the bombing. The estimated relative risk was 4.1 at 1 Gy (95% confidence limits 1.7 to 14). There was some evidence that the effect of radiation was greater for individuals who were younger at the time of the bombing. In conclusion, exposure to atomic bomb radiation affected the occurrence of hyperparathyroidism, suggesting that doses of radiation lower than those used in radiotherapy may also induce this disorder.
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Affiliation(s)
- S Fujiwara
- Department of Clinical Studies, Radiation Effects Research Foundation, Hiroshima City, Japan
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18
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Tanaka F, Ezaki H, Isobe J, Ueno Y, Inoue R, Ito M, Mori A, Shiraki K, Uemura H. [Four cases of spontaneous pneumothorax with no reexpansion of collapsed lung despite chest tube drainage]. Kyobu Geka 1992; 45:515-8. [PMID: 1602680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We report four cases of spontaneous pneumothorax with no reexpansion of the collapsed lung despite chest tube placement and adequate suction. The cause of absence of reexpansion was endobronchial obstruction by bronchogenic carcinoma in one patient and by sputum plug in another. In the other two patients, the collapsed lung had pulmonary fibrosis and did not reexpand at all because of reduced pulmonary compliance.
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Affiliation(s)
- F Tanaka
- Department of Surgery, National Gifu Hospital
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19
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Tanaka F, Ezaki H, Isobe J, Ueno Y, Inoue R, Ito M, Mori A, Shiraki K, Uemura H. [Effect of intravenous administration of coagulation factor XIII concentrate on persistent pleural air leak]. Kyobu Geka 1991; 44:924-8. [PMID: 1942686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We administered coagulation factor XIII concentrate intravenously to six patients suffering from persistent air leak with no evidence of bronchopleural fistulae They are those who had either failed to be healed in response to pleurodesis, intrapleural fibrin glue injection and surgery or had not received such treatment. Their blood coagulation factor XIII activity levels were less than 70% of the standard plasma level. In four of the six patients, air leak stopped within 10 days after the treatment begun. Because factor XIII plays an important role in wound healing, reduction in the activity level can be a cause of insufficient healing of pulmonary surface fistulae and may lead to persistent air leak. In such cases, intravenous administration of factor XIII concentrate increases the activity levels and may put an end to persistent air leak.
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Affiliation(s)
- F Tanaka
- Department of Surgery, National Gifu Hospital
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20
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Ueno Y, Toba T, Ezaki H, Isobe J, Inoue R, Itoh M. [Respiratory surgery through a median sternotomy utilizing the IMA-retractor]. Kyobu Geka 1991; 44:303-4. [PMID: 2038158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A new utilization of the IMA-retractor for respiratory surgery is described. Following linear division of the sternum, the IMA-retractor is applied to tip upward the sternal edge on the operated side. The IMA-retractor provides excellent exposure of the lung without the need for surgical assistance and greatly facilitates respiratory operations through the median sternotomy.
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Affiliation(s)
- Y Ueno
- Department of Surgery, Gifu National Hospital
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21
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Ban S, Setlow RB, Bender MA, Ezaki H, Hiraoka T, Yamane M, Nishiki M, Dohi K, Awa AA, Miller RC. Radiosensitivity of skin fibroblasts from atomic bomb survivors with and without breast cancer. Cancer Res 1990; 50:4050-5. [PMID: 2354455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Fibroblasts were established in vitro from skin biopsies obtained from 55 women and 1 man with or without breast cancer and with or without exposure to radiation from the atomic bomb explosion in Hiroshima. The radiosensitivity of these cells was evaluated by clonogenic assays after exposure to X-rays or to fission neutrons from a 252Cf source. Data were fitted to a multitarget model, S/S0 = A [1 - (1 - ekD)N], for both X-ray and neutron dose-survival curves. A single hit model, S/S0 = AekD, fits the neutron dose-survival responses as well. There were no differences in the means or variances of radiosensitivity between exposed and nonexposed groups or between patients with or without breast cancer. Hence, although the sample is not large, it provides no support for the hypothesis that atomic bomb radiation preferentially induces breast cancer in women whose cells in vitro are sensitive to cell killing by radiation.
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Affiliation(s)
- S Ban
- Department of Genetics, Radiation Effects Research Foundation, Hiroshima, Japan
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22
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Abstract
A case of patent ductus arteriosus (PDA) in an 80 years old female is presented. This is the oldest case reported in Japan and the most elderly case of newly diagnosed PDA in the world. Features of PDA in the elderly are reviewed.
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Affiliation(s)
- T Kaku
- Tokyo Metropolitan Tama Geriatric Hospital, Japan
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23
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Toda G, Matsushita S, Kuramoto K, Oda S, Ezaki H, Hattori A, Kawashima S. Calcium-activated neutral protease inhibitor (E-64c) and reperfusion for experimental myocardial infarction. Jpn Heart J 1989; 30:375-86. [PMID: 2552189 DOI: 10.1536/ihj.30.375] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We examined the efficacy of the combination of coronary reperfusion and calcium-activated neutral protease (CANP) inhibitor (E-64c) for the treatment of acute myocardial infarction in dogs. In 34 dogs, the left anterior descending artery (LAD) was occluded and reperfused after 1 hour (Groups A and B). In the remaining 49 dogs, the LAD was ligated (Groups C and D). E-64c (100 mg/kg, Groups A and C) or vehicle (Groups B and D) was injected intravenously before and after the coronary occlusion or ligation. After 24 hours the hearts were removed. The proportion of the infarct size in the LAD perfusing area (risk zone) in Group A was 47.3 +/- 9.7%, significantly lower than in Group C (54.8 +/- 8.2%, p less than 0.05) or Group D (58.7 +/- 10.0%, p less than 0.01). There was a significant difference between Group B (52.9 +/- 8.6%) and Group D as well (p less than 0.05). The effects of reperfusion (p = 0.0016) and E-64c (p = 0.0226) per se on infarct size were significant, but the combination of reperfusion and E-64c was not additive. The decrease in CPK activity in the risk zone was significantly lower in the reperfused group (p = 0.0001). The mCANP activity was higher in the border zone and lower in the infarct zone. The trend in the mu CANP activity was similar to that of mCANP. Thus, treatment with a CANP inhibitor in the early phase of acute myocardial infarction may be marginally beneficial in combination with reperfusion.
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Affiliation(s)
- G Toda
- Tokyo Metropolitan Geriatric Hospital, Japan
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24
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Ezaki H, Iwami K, Nakahara K, Toda G, Soejima K, Kounoe A, Ueyama C, Kitano Y. [Clinical evaluation of the prehospital phase of acute myocardial infarction in the elderly]. Nihon Ronen Igakkai Zasshi 1989; 26:11-8. [PMID: 2770024 DOI: 10.3143/geriatrics.26.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In order to clarify the clinical characteristics of the prehospital phase of acute myocardial infarction (AMI) in the elderly, we studied 92 elderly (65 years old or more) and 41 younger patients with first AMI. Fifty eight elderly (63.1%) and 30 younger (72.7%) patients had typical symptoms such as chest pain at onset. There were 5 elderly cases who had no symptom, although all of the younger had some symptoms at onset. More than 70% of the younger cases developed their symptoms either between 6 am and noon or between 6 pm and midnight, whereas the elderly showed no such tendency. Intervals between the onset of symptoms and hospital admission (admission time) averaged 6.8 hours (hr) in the younger and 7.7 hr in the elderly. Approximately one half of the elderly and a quarter of the younger showed admission time more than 6 hr, respectively. Elderly cases with atypical symptoms tended to have a longer admission time than younger cases (7.2 vs 3.1 hr), although there was no significant difference between the elderly and the younger with typical symptoms (8.0 vs 7.9 hr). Younger patients with heart failure had significantly shorter admission time than those without heart failure (3.6 vs 8.6 hr). However, the elderly with heart failure showed a prolonged admission time (6.1 hr). Although there was no difference on admission time between survivors and non-survivors within 28 days after admission in the elderly (7.5 vs 8.4 hr), the elderly non-survivors with atypical symptoms had the longest admission time (13.0 hr).(ABSTRACT TRUNCATED AT 250 WORDS)
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25
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Toda G, Matsushita S, Sakai M, Hattori A, Oda S, Ezaki H, Ookawa S, Kuramoto K. [The clinical and pathological study in the recurrent myocardial infarction]. Nihon Ronen Igakkai Zasshi 1988; 25:463-8. [PMID: 3210357 DOI: 10.3143/geriatrics.25.463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Ezaki H, Matsushita S, Shiraki M, Kuramoto K, Yamaji T. Clinical evaluation of the plasma levels of immunoreactive atrial natriuretic peptide in elderly patients with heart diseases. J Am Geriatr Soc 1988; 36:537-41. [PMID: 2967316 DOI: 10.1111/j.1532-5415.1988.tb04025.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Plasma levels of immunoreactive atrial natriuretic peptide (ANP) were estimated in 69 elderly patients over 60 years of age (mean 76.4 years) with or without heart diseases and in ten young, healthy volunteers (mean 33.0 years) to evaluate the clinical significance of ANP in the elderly. Plasma ANP levels in nine patients without heart diseases were significantly (P less than .01) higher than in the ten young, healthy subjects (mean +/- SD, 46.0 +/- 22.0 vs 22.1 +/- 6.3 pg/mL) and a significant positive correlation was observed between ANP level and age in these subjects (r = 0.60, P less than 0.01). Plasma ANP levels in 60 patients with heart diseases (158.4 +/- 158.5 pg/mL) were significantly (P less than 0.05) greater than in nine patients without heart diseases. Plasma ANP levels in patients with congestive heart failure or atrial fibrillation were 285.8 +/- 185.2 or 223.0 +/- 185.9 pg/mL, respectively; each of these values was significantly (P less than 0.01) higher than in patients without heart diseases. In three patients with paroxysmal atrial fibrillation, plasma ANP levels during atrial fibrillation were three times greater than when atrial fibrillation returned to normal sinus rhythm (377.3 +/- 78.5 vs 101.1 +/- 68.5 pg/mL). These results indicate that plasma ANP levels increase with advancing age, and that increased ANP levels are associated with various heart diseases in elderly subjects, possibly through stretch of the atrial wall.
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Affiliation(s)
- H Ezaki
- Department of Internal Medicine, Tokyo Metropolitan Geriatric Hospital, Japan
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Ezaki H, Ohkawa S, Miyagawa A, Ueda K, Sugiura M. A histopathologic study of the conduction system in an elderly patient with partial atrial standstill. Jpn Heart J 1987; 28:933-40. [PMID: 3444042 DOI: 10.1536/ihj.28.933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Electrophysiologic and histopathologic studies were performed on an 83-year-old man with partial atrial standstill. In the electrophysiologic study, no atrial electrical activity was recorded in the right atrium, but f waves were seen in the coronary sinus electrogram. Although the high right atrium and the atrial septum could not be activated by electrical stimuli of up to 10 V, the low atrium could be stimulated. The pathologic examination showed that there was extensive fatty infiltration into the sinus node and fibrosis in the atrial muscle. In the low right atrium, the musculature was partially preserved.
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Affiliation(s)
- H Ezaki
- Division of Cardiology, Tokyo Metropolitan Geriatric Hospital, Japan
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Tokunaga M, Land CE, Yamamoto T, Asano M, Tokuoka S, Ezaki H, Nishimori I. Incidence of female breast cancer among atomic bomb survivors, Hiroshima and Nagasaki, 1950-1980. Radiat Res 1987; 112:243-72. [PMID: 3685255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Ascertainment of breast cancer incidence among the cohort of the RERF Life Span Study extended sample identified 574 breast cancers among 564 cases diagnosed during 1950-1980 of which 412 cancers were reviewed microscopically. There were no dose-dependent differences with respect to diagnostic certainty or histological type. As in previous studies, the dose response appeared to be roughly linear and did not differ between the two cities. The most remarkable new finding was the emergence of a radiation-related excess among women under 10 years of age at exposure. The risk of radiogenic breast cancer appears to decrease with increasing age at exposure, whether expressed in relative or absolute terms. These results suggest that exposure of female breast tissue to ionizing radiation at any time during the first four decades of life, even during the premature stage, can cause breast cancer later in life, and that the length of time that tumor promoters such as endogenous hormones operate following exposure has an important influence on the development of radiation-induced breast cancer. An unresolved question is whether breast cancer risk is increased by radiation exposure at ages older than 40.
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Affiliation(s)
- M Tokunaga
- Second Department of Pathology, Faculty of Medicine, Kagoshima University, Japan
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Toda G, Matsushita S, Kuramoto K, Sakai M, Oda S, Ezaki H, Hattori A, Ohkawa S. [A change in the cause of death in myocardial infarction and the beneficial effect of vasodilator therapy on cardiac rupture following myocardial infarction]. Nihon Ronen Igakkai Zasshi 1987; 24:457-62. [PMID: 3441042 DOI: 10.3143/geriatrics.24.457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Ezaki H, Matsushita S, Ohkawa S, Kuramoto K. Comparison of enzymatic, anatomic and electrocardiographic estimates of myocardial infarct size in man. Jpn Circ J 1987; 51:374-82. [PMID: 3613040 DOI: 10.1253/jcj.51.374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Myocardial infarct size is definitely related to cardiac function and prognosis. For a critical evaluation of infarct size estimation methods, we weighed infarcted myocardium from 44 autopsy cases (24 men and 20 women, mean age of 76.8 yr.), and compared the weight with the peak value of serum CPK activity (peak-CPK), the peak value of serum CPKMB isoenzyme activity (peak-CPKMB), the total CPK release (sigma CPK), and the QRS scoring system in the standard 12-lead electrocardiogram (ECG) modified by Wagner et al.. The mean infarcted myocardial weight (MI weight) of the 44 cases was 38.4 g. The mean value of the peak-CPK, peak-CPKMB, and sigma CPK were 2487, 221, and 4597 IU/ml, respectively, and the mean QRS point score was 7.2. The interval between serial CPK determination and ECG recording or autopsy averaged 130.1 or 52.4 days, respectively. There were significant (p less than 0.01) correlations between the MI weight and peak-CPK (r = 0.63, n = 17), peak-CPKMB (r = 0.79, n = 17), sigma CPK (r = 0.72, n = 11), and the QRS scoring system (r = 0.64, n = 39), respectively. Especially in cases of non-transmural myocardial infarction, the QRS scoring system showed a high correlation with MI weight (r = 0.82, n = 11, p less than 0.01). We conclude that the peak-CPK, peak-CPKMB, sigma CPK, and the QRS scoring system are useful for the estimation of myocardial infarct size.
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Teramachi M, Ezaki H, Okumura N, Okada K, Ito M, Inoue R, Kobayashi K, Naiki H, Takeda T. [A case of malignant schwannoma of the posterior mediastinum]. Nihon Kyobu Shikkan Gakkai Zasshi 1987; 25:461-5. [PMID: 3669457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Miller RC, Kopecky KJ, Hiraoka T, Ezaki H, Clifton KH. Comparison of radiosensitivities of human autologous normal and neoplastic thyroid epithelial cells. Br J Radiol 1986; 59:127-30. [PMID: 3947820 DOI: 10.1259/0007-1285-59-698-127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Studies were conducted to examine differences between the radiosensitivities of normal and neoplastic epithelial cells of the human thyroid. Freshly excised thyroid tissues from the tumours of eight patients with papillary carcinoma (PC) and five with follicular adenoma (FA) were cultured in vitro separately from normal thyroid tissue obtained from the surgical margins of the same patients. Plating efficiency of unirradiated control tissue was lower, on average for tumour tissue compared with normal tissue. Radiosensitivity, measured by the 37% inactivation dose D0, was greater for carcinoma tissue than for normal tissue in seven out of eight PC cases. Adenomatous tissue was less radiosensitive than normal tissue in four out of five FA cases. This is the first report comparing the radiosensitivity of autologous normal and abnormal epithelial tissue from the human thyroid.
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Takasugi S, Kanao M, Nishiki M, Dohi K, Ezaki H. [Interaction of proteases and their inhibitors in the pathogenesis of pancreatitis]. Nihon Geka Gakkai Zasshi 1985; 86:1245-8. [PMID: 2418345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
It was confirmed that esterolytic activity was significantly elevated in plasma of patients with acute pancreatitis, which correlated better with the stage of the disease than serum amylase level. Using the several column chromatography procedures, pancreatic kallikrein, trypsin and pancreatic elastase were separated and purified from alpha 2-macroglobulin (alpha 2-M) fractions of patients plasma with acute pancreatitis. From this this result, it was confirmed that kallikrein was liberated into the blood stream from the pancreas during attacks of acute pancreatitis and the liberated kallikrein combined with alpha 2-M. Furthermore, the coexistence of trypsin is required for the complex formation of alpha 2-M and pancreatic kallikrein. It was speculated that alpha 2-M might be decomposed by the excessive amount of elastase, and consequently, might release all of its combining enzymes into the blood stream. In the present study, the activation mechanism of fibrinolytic enzyme system in plasma by human pancreatic elastase was investigated. Elastase not only converted the co-existing plasminogen to low molecular weight plasminogen which could be easily activated by the activators, but also inhibited alpha 2-M and alpha 2-plasmin inhibitor, and consequently, induced the activation of the fibrinolytic enzyme system in plasma. Furthermore, it was also confirmed that elastase could activate plasma kallikreinogen to kallikrein.
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Takeichi N, Dohi K, Matsumoto H, Nishiki M, Kishi N, Fujii T, Matsuyama T, Fujikura T, Ezaki H. A parathyroid cyst effectively treated with a sclerosing agent. Jpn J Surg 1985; 15:405-7. [PMID: 4079146 DOI: 10.1007/bf02469938] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Sclerosing solution was injected into a parathyroid cyst through a needle used for aspiration biopsy cytology. One year has passed without a recurrence and a cure is expected.
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Ichiba Y, Tanaka T, Kodama O, Matsuyama T, Nishiki M, Dohi K, Ezaki H. Surgical treatment for insulinoma: a study of 6 cases. Hiroshima J Med Sci 1985; 34:247-52. [PMID: 2993201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Hiraoka T, Miller RC, Gould MN, Kopecky KJ, Ezaki H, Takeichi N, Ito T, Jones MP, Clifton KH. Survival of human normal thyroid cells after X-ray irradiation. Int J Radiat Biol Relat Stud Phys Chem Med 1985; 47:299-307. [PMID: 3872283 DOI: 10.1080/09553008514550441] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Normal thyroid cells from 25 individuals treated surgically for malignant or benign thyroid tumour were cultured in vitro and radiation induced cytotoxicity was studied. The mean lethal dose (Do), quasi-threshold (Dq), and extrapolation number (n) of survival curves of actively dividing thyroid cells assayed by colony formation were estimated to be 92.9 +/- 2.8 cGy (rad), 58.1 +/- 6.9 cGy and 2.0 +/- 0.1, respectively (average for 25 individuals +/- standard error). These results suggest that proliferating human thyroid cells are more sensitive to X-rays than most other nonhaematologic mammalian cells in similar assays. Cell survival was not significantly affected by sex, age, disease or exposure to atomic bomb radiation of the cell donor. However, the number of samples currently available is too small for definite conclusions in this regard.
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Dohi K, Tanaka T, Asahara T, Kodama O, Matsuyama T, Takasugi S, Marubayashi S, Ezaki H. A comparison of pancreatectomy and pancreatic duct drainage in chronic pancreatitis. Hiroshima J Med Sci 1985; 34:119-24. [PMID: 4019232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Dohi K, Tabe Y, Ono E, Ezaki H. Studies on the control of hyperacute rejection in hyperimmunized rat: combination of donor specific blood transfusion (DST) and immunosuppressive drugs. Hiroshima J Med Sci 1985; 34:137-46. [PMID: 4019235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Dohi K, Tabe Y, Ono E, Ezaki H. Relationship between the decrease of cytotoxic antibody with the elapse of time and hyperacute rejection in hyperimmunized rats. Hiroshima J Med Sci 1985; 34:131-6. [PMID: 4019234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Tanaka T, Ichiba Y, Seikoh R, Takeuchi H, Itoh N, Kodama O, Matsuyama T, Nishiki M, Dohi K, Ezaki H. Surgical treatment of pancreatic cysts: review of 21 cases. Hiroshima J Med Sci 1985; 34:109-12. [PMID: 4019230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Harada M, Dohi K, Takahashi M, Inagaki K, Ezaki H. Ascitic bile acids in patients with liver cirrhosis. Hiroshima J Med Sci 1985; 34:125-30. [PMID: 4019233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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44
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Kodama O, Ito N, Tanaka T, Takeuchi H, Seikoh R, Ezaki H. Influence of amines in the brain and gastric wall on development of stress ulcers. Hiroshima J Med Sci 1985; 34:101-7. [PMID: 4019229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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45
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Kodama O, Seikoh R, Tanaka T, Matsuyama T, Nishiki M, Dohi K, Ezaki H. Gastric mucosal lesions in cases of nonshunting procedures for esophageal varices. Hiroshima J Med Sci 1985; 34:151-4. [PMID: 4019236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Amano K, Nishiki M, Yamane M, Matsuyama T, Kataoka T, Tanaka T, Ezaki H. A case report of carcinoma originating from aberrant breast tissue. Hiroshima J Med Sci 1985; 34:7-9. [PMID: 2991167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Takasugi S, Nishiki M, Kanao M, Okumichi T, Ezaki H, Toki N. A case of ruptured hepatoma followed by elastase-induced disseminated intravascular coagulation. Enzyme 1985; 33:147-52. [PMID: 2414097 DOI: 10.1159/000469424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In the present study, the first case of ruptured hepatoma followed by disseminated intravascular coagulation is reported. An elastase-like enzyme which possessed elastolytic and caseinolytic activities was confirmed from patient plasma. On the other hand, no elastase activity was detected in the plasma of patients with hepatitis, liver cirrhosis or hepatoma without disseminated intravascular coagulation. The patient plasma did not possess H-D-Val-Leu-Lys-p-nitroanilide hydrochloride, succinyl-L-alanyl-L-alanyl-p-nitroanilide, and pyro-Glu-Pro-Val-p-nitroanilide amidolytic activities. However, when chromatographed on Sephadex G-200, the presence of low-molecular weight plasminogen was confirmed. Its molecular weight was approximately 52,000. A slight decrease of alpha 2-plasmin inhibitor was noted, but no decrease of alpha 2-macroglobulin was detected.
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Kawanishi H, Nishiki M, Kanao M, Nakagawa K, Sugiyama M, Tsuchiya T, Ezaki H. Influence of hemoperfusion using polyetherurethane sheet embedded with powdered charcoal (UPC) on middle molecules of hepatic failure dogs. Hiroshima J Med Sci 1984; 33:633-638. [PMID: 6534919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Takeuchi H, Kodama O, Ito N, Tanaka T, Harada M, Seikoh R, Yamamoto M, Ezaki H. Studies of standard liver function and hepatic fibrosis in rats with obstructive jaundice and biliary drainage. Hiroshima J Med Sci 1984; 33:679-683. [PMID: 6534925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Nishiki M, Ezaki H. Mass screening for breast cancer in Hiroshima Prefecture. Hiroshima J Med Sci 1984; 33:703-707. [PMID: 6534928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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