Yasuo Fukushi
Tohoku University
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Featured researches published by Yasuo Fukushi.
The Journal of Urology | 1983
Yasuo Fukushi; Seiichi Orikasa; Mutsuo Takeuchi
We report a case of left ureteral intussusception associated with a ureteral polyp. At operation a 7 cm. long polyp was seen originating from the tip of the inside of the proximal ureter, causing 1.7 cm. of antegrade invagination. The polyp was resected and the invaginated region was repaired since pathological examination revealed a benign tumor. At followup an excretory urogram demonstrated prompt improvement of left hydronephrosis.
The Journal of Urology | 1982
Yasuyoshi Suzuki; Yasuo Fukushi; Seiichi Orikasa; Katsuo Kumagai
The opsonic effect of urine from normal adults and patients with acute cystitis on phagocytosis of yeast and E. coli by purified human neutrophils was investigated. Urine with an osmotic pressure between 200 and 500 mOsm./kg. was the most effective as an opsonic buffer in either phagocytosis of yeast or E. coli by PMN. However, those with an osmotic pressure greater than 500 mOsm./kg. or less than 200 mOsm./kg. were rather suppressive to phagocytosis by PMN. Patients urine exhibited a more potent opsonic effect on phagocytosis of either bacteria when compared with that of normal urine with a similar osmotic pressure. Heat inactivation gave no effect on the potent opsonic activity of patients urine, suggesting that complement may not be working in these phagocytosis systems or that the test urine may originally contain no complement. However, immunoelectrophoretic survey of test urine and addition of serum proteins into the urine suggest the possibility that certain serum derived urine proteins other than complement may play an opsonic role in phagocytosis by PMN in the patients urine, although the factors have not been determined.
Urologia Internationalis | 1992
Makoto Satoh; Yasuo Fukushi; Sadafumi Kawamura; Chikara Ohyama; Seiichi Saito; Seiichi Orikasa; Edward Nudleman; Sen-itiroh Hakamori
The expression patterns of glycolipid from prostatic hyperplasia, prostatic cancer and normal prostate tissue were observed. A further analysis of antigen recognized by mouse monoclonal antibody APG1, which was gained by immunizing glycolipids extracted from human prostate cancer, was also performed. In cancer tissue, both of the lactosyl and globoside series glycolipids were found to be generally reduced, although in the ganglioside series, GM3 and GD3 were not reduced and only the glycolipids with longer chains than GD2 were found to be reduced. These results indicated that the inhibition of sugar chain elongation, but not sialylation, was the main synthetic change occurring with carcinogenesis of the human prostate. APG1 reacted with only two bands near GM2 and GD2 of the ganglioside fraction on a thin-layer chromatography plate, but it did not react with any of the known gangliosides of the ganglioside series including GM2 and GD2. Histochemically, APG1 showed intense reaction only in frozen tissue sections of human prostate, and the reactivity decreased with the increasing grade of cancer. Therefore, this antigen was considered to be a prostate-specific and differentiated antigen reacting with nonganglioseries gangliosides.
The Journal of Urology | 1992
Chikara Οhyama; Seiichi Orikasa; Makoto Satoh; Seiichi Saito; Haruo Ohtani; Yasuo Fukushi
Glycolipids were biochemically extracted from 14 specimens of seminoma, 2 of testicular malignant lymphoma (both of which were difficult to differentiate from seminoma with a high mitotic index) and 4 of normal testicle. The pattern of their expression was compared. Marked accumulation of globotriaosyl ceramide was observed in seminoma but it was present in a small amount in testicular malignant lymphoma. Differentiation between seminoma and malignant lymphoma is sometimes difficult by histopathological findings but it is considered to be greatly facilitated by examination of the pattern of glycolipid expression.
The Japanese Journal of Urology | 1991
Shinnosuke Katoh; Seiichi Orikasa; Seiichi Toyota; Shin Itoh; Katsuhiko Oikawa; Yasuo Fukushi; Yasuyoshi Suzuki
Cell population of urinary leucocytes of 22 patients (intestine group) who underwent operations using intestinal segments for the urinary tract was compared with that of 26 complicated UTI patients without surgical intervention (control group). Eosinophils were recognized in 15.5 per cent of urinary leucocytes of the intestine group. However, in the control group, urine eosinophils were recognized only in 0.15 per cent. Although in sterile urines of the intestine group eosinophils were recognized in 30.8 per cent, in infected urines, the percentage of eosinophils decreased. Conversely, the percentage of neutrophils increased to 91.9 per cent. These findings suggest that neutrophils play an important role in infected urines of the intestine group as in urines of the control group. Significant differences were found in the values of urinary secretory IgA, IgG, IgM and urinary osmolarity. To evaluate the influence of these differences on the activity of phagocytosis of urinary leucocytes, the activity of phagocytosis of polymorphonuclear leucocytes (PMN), isolated from the peripheral blood, was investigated in immersion in urines of both groups. The mean rate of phagocytosis of E. coli in urines of both groups showed no statistically significant differences. However, urinary osmolarity of the intestine group was within the suitable range for phagocytosis and the activity of phagocytosis in urine was correlated with the value of IgG, which suggests that IgG has the opsonic effect. In contrast, the activity of phagocytosis in urine of the control group was strongly correlated with the value of urinary osmolarity. The growth of Providencia, Streptococcus, P. aeruginosa, whose frequency of isolation from urine of both groups was different in our previous study, and E. coli was studied in urine of the two groups. No significant difference in the growth of all bacteria was found, however. This finding suggests that the difference in the frequency of isolation of these bacteria from urine possibly depends on the adhesion of bacteria to intestinal epithelium.
Cancer Research | 1984
Kiyoyasu Fukushima; Masaki Hirota; Paul I. Terasaki; Akemi Wakisaka; Hiroyuki Togashi; David Chia; Naofuml Suyama; Yasuo Fukushi; Edward Nudelman; Sen-itiroh Hakomori
Cancer Research | 1986
Reiji Kannagi; Yasuo Fukushi; Tetsuya Tachikawa; Atsunari Noda; Sadahito Shin; Katsuyoshi Shigeta; Nozomu Hiraiwa; Yoshihiro Fukuda; Takashi Inamoto; Sen-itiroh Hakomori; Hiroo Imura
Cancer Research | 1986
Steven H. Itzkowitz; Mei Yuan; Yasuo Fukushi; Alka Palekar; Patricia C. Phelps; Abulkalam M. Shamsuddin; Benjamin F. Trump; Sen-itiroh Hakomori; Young S. Kim
Cancer Research | 1985
Yasuo Fukushi; Reiji Kannagi; Sen-itiroh Hakomori; Thomas Shepard; Bruce G. Kulander; Jack W. Singer
Journal of Experimental Medicine | 1984
Yasuo Fukushi; Sen-itiroh Hakomori; Thomas Shepard