251
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Nakatsu T, Tomimatsu H, Sato N, Matsuoka S, Ueta H, Miyao M, Yuasa Y. [Effects of intravenous dinitrate injection on hemodynamics in dogs with experimental ventricular septal defects]. KOKYU TO JUNKAN. RESPIRATION & CIRCULATION 1983; 31:1111-5. [PMID: 6665330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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252
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Kodera K, Yuasa Y, Ido K, Narimatsu Y, Hiramatsu K. [Arterial embolization with Ivalon particles]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1983; 43:1053-5. [PMID: 6322101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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253
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Yuasa Y, Srivastava SK, Dunn CY, Rhim JS, Reddy EP, Aaronson SA. Acquisition of transforming properties by alternative point mutations within c-bas/has human proto-oncogene. Nature 1983; 303:775-9. [PMID: 6866079 DOI: 10.1038/303775a0] [Citation(s) in RCA: 338] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The transforming gene of a human lung carcinoma-derived cell line, Hs242, has been cloned in biologically active form, and identified as c-bas/has (otherwise known as c-Ha-ras). The genetic lesion responsible for the transforming activity of the Hs242 oncogene has been localized to a point mutation in the second exon which results in the substitution of leucine for glutamine as amino acid 61 of the predicted protein. No changes were observed in the first exon, the region of c-bas/has in which a point mutation is responsible for activation of the T24 and EJ bladder carcinoma oncogenes.
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254
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Yamashiro M, Yuasa Y, Kawakita K. An experimental study on the relationships between compressibility, fluidity and cohesion of powder solids at small tapping numbers. POWDER TECHNOL 1983. [DOI: 10.1016/0032-5910(83)87054-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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255
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Yamashiro M, Yuasa Y. A penetration test for granular materials using various tip angles and penetrometer shapes. POWDER TECHNOL 1983. [DOI: 10.1016/0032-5910(83)87035-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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256
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Hiramatsu K, Iwata Y, Kohda E, Narimatsu Y, Hisa T, Isobe Y, Kodera K, Ido K, Yuasa Y. [Percutaneous transluminal renal angioplasty]. RINSHO HOSHASEN. CLINICAL RADIOGRAPHY 1983; 28:35-42. [PMID: 6221131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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257
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Matsuoka S, Tomimatsu H, Sato N, Nakatsu T, Miyao M, Yuasa Y. [Right-to-left shunt in ventricular septal defects: pulmonary artery banding in dogs with experimentally produced ventricular septal defect]. KOKYU TO JUNKAN. RESPIRATION & CIRCULATION 1982; 30:1135-40. [PMID: 7167683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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258
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Srinivasan A, Dunn CY, Yuasa Y, Devare SG, Reddy EP, Aaronson SA. Abelson murine leukemia virus: structural requirements for transforming gene function. Proc Natl Acad Sci U S A 1982; 79:5508-12. [PMID: 6291048 PMCID: PMC346933 DOI: 10.1073/pnas.79.18.5508] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The integrated Abelson murine leukemia virus (A-MuLV) genome cloned in bacteriophage lambda gtWES.lambda B was used to localize viral genetic sequences required for transformation. Comparison of the biological activity of cloned A-MuLV genomic and subgenomic fragments showed that subgenomic clones that lacked the 5' long terminal repeat and adjoining sequences (300 base pairs downstream of the repeat) were not biologically active. In contrast, subgenomic clones that lacked the 3' long terminal repeat and as much as 1.3 kilobase pairs of the A-MuLV cell-derived abl gene were as efficient as wild-type viral DNA in transformation. The A-MuLV-encoded polyprotein P120 and its associated protein kinase activity were detected in transformants obtained by transfection with Cla I, BamHI, and HindIII subgenomic clones. In contrast, individual transformants obtained with subgenomic Sal I clones expressed A-MuLV proteins ranging in size from 82,000 to 95,000 daltons. Each demonstrated an associated protein kinase activity. These results provide direct genetic evidence that only the proximal 40% of abl with its associated 5' helper viral sequences is required for fibroblast transformation.
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259
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Izutsu M, Isobe Y, Yuasa Y, Ido K, Narimatsu Y, Kodera K, Sekine Y, Mohri M, Kohda E, Hiramatsu K. [Grading of the pancreas head carcinoma based on the angiographic findings]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1982; 42:546-52. [PMID: 7145615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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260
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Yuasa Y, Miyauchi Y, Tomimatsu H, Sato N, Nakatsu T, Matsuoka S, Ueda H, Miyao M. [Experimental production of interventricular septal defects (author's transl)]. KOKYU TO JUNKAN. RESPIRATION & CIRCULATION 1982; 30:363-7. [PMID: 7100677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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261
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Matsuoka S, Miyauchi Y, Nakatsu T, Yuasa Y, Ueda H, Miyao M. [Hemodynamics during hypoxia in dogs with extracardiac LV-RV shunt (author's transl)]. KOKYU TO JUNKAN. RESPIRATION & CIRCULATION 1982; 30:293-9. [PMID: 7100672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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262
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Sekiguchi T, Miyao M, Kokawa T, Yuasa Y, Uyama Y, Tanaka H. [Laboratory and clinical studies of ceftizoxime in pediatrics (author's transl)]. THE JAPANESE JOURNAL OF ANTIBIOTICS 1982; 35:160-70. [PMID: 6279907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Laboratory and clinical studies were performed as follows on ceftizoxime (CZX), a new cephalosporin antibiotic. 1. Susceptibility of clinically isolated bacteria to CZX and cefotiam (CTM) or sulbenicillin (SBPC). Antibacterial activities of CZX and CTM were compared against S. aureus, E. coli, K. pneumoniae, E. cloacae, H. influenzae and E. aerogenes; CZX was compared with SBPC against Ps. aeruginosa. CZX and CTM were nearly equal in activity against S. aureus, but CZX was found to be more active than CTM by 1--10 tubes against E. coli, K. pneumoniae, E. cloacae, H. influenzae and E. aerogenes. Against Ps. aeruginosa, CZX and SBPC were nearly equal in activity. 2. Serum concentration and urinary recovery. Serum concentrations of CZX were measured in 6 patients given CZX for prophylactic purpose during cardiac catheterization. In 2 patients given 20 mg/kg of CZX intravenously, the average serum concentration was 38.9 micrograms/ml at 30 minutes after intravenous bolus injection. In 3 patients given 10 mg/kg of CZX by intravenous drip infusion, the peak average serum concentration was 28.1 micrograms/ml at the end of infusion. Urinary recovery in 2 patients tested was 81.1% and 92.5% until 6--7 hours after intravenous bolus injection. 3. Clinical efficacy. CZX was given intravenously to 24 patients in doses of 30--111 mg/kg (57.1 mg/kg on an average) t.i.d. or q.i.d. for 3--16 days (5.5 days on an average): 1 with lacunar tonsillitis, 4 with acute bronchitis, 12 with pneumonia, 2 with enterocolitis, 2 with soft tissue infection, 2 with lymphadenitis and 1 with UTI. The overall efficacy rate was 95.8%, i.e., efficacy was excellent in 10 (41.7%), good in 13 (54.2%), and poor in 1 (4.2%). Bacteriological efficacy was excellent, i.e. 21 of the 23 strains disappeared. One patient had mild and transient diarrhea, but no other laboratory abnormalities were observed during treatment. The above results suggest that CZX is 1 of the most useful antibiotics for treating pediatric infections, especially due to Gram negative bacteria.
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263
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Sato M, Kodera K, Yuasa Y, Nishimura G, Narimatsu Y, Hiramatsu K. [X-ray manifestations of the retroperitoneal fibrosis (author's transl)]. RINSHO HOSHASEN. CLINICAL RADIOGRAPHY 1981; 26:655-62. [PMID: 7277769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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264
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Watanabe S, Yoshiike K, Yuasa Y, Uchida S. Natural occurrence of deletion mutant of human papovavirus BK capable of inducing T antigen. J Gen Virol 1981; 54:431-5. [PMID: 7288412 DOI: 10.1099/0022-1317-54-2-431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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265
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Yuasa Y, Ichioka T, Sekiguchi T, Miyao M, Toi C, Hayashi K, Yamashita K, Tanaka H. [Clinical experience with cefoxitin in bacterial infections of children (author's transl)]. THE JAPANESE JOURNAL OF ANTIBIOTICS 1981; 34:359-66. [PMID: 7289028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Using a new cephamycin antibiotic, cefoxitin, clinical studies were carried out, and the following results were obtained: (1) Cefoxitin was administered to 52 children with 38 respiratory tract infections, 2 urinary tract infections, 1 acute otitis media and others, who ranged in age from 2 months to 11 years old. (2) Cefoxitin was given intravenously at a daily dose of 27.3 mg/kg to 110.5 mg/kg. (3) The overall efficacy rate was 80% in 46 cases, i.e., excellent in 10, good in 27, fair in 7 and poor in 2. (4) Clinical side effects were not seen except exanthema in 1 patient. Elevation of GOT and GPT was seen in 2 patients, elevation of A1-P in 1 and eosinophilia in 2 by laboratory tests. However, these findings were alleviated rapidly following the cessation of therapy.
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266
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Miyao M, Kuroda Y, Tanaka H, Mizui M, Uyama Y, Yuasa Y. [Clinical results of cefoperazone in pediatric infections (author's transl)]. THE JAPANESE JOURNAL OF ANTIBIOTICS 1980; 33:931-4. [PMID: 6452542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In order to evaluate effectiveness of cefoperazone (CPZ) in the treatment of bacterial infections of children, the clinical studies were carried out. CPZ was administered by one-shot injection to 28 patients at daily dose of 50 approximately 160 (average 89.7) mg/kg in 3 approximately 4 divided dose for 2 approximately 10 (average 5.6) days. The overall efficacy rate in 28 cases was 92.9%, i.e., excellent in 16 (57.1%), good in 10 (35.7%), fair in 1 (3.6%) and poor in 1 case (3.6%). Temporary rise of GOT and GPT or only GOT was observed in each 1 case out of 28 cases (7.1%), but any other abnormality was not observed throughout this series. Based on the above results, CPZ was thus considered to be a useful antibiotic in treatment of pediatric infections caused by Gram-positive cocci and Gram-negative rods.
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267
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Yuasa Y, Hirai R, Huh N, Segawa K. Double transformation of Indian muntjac cells by avian and murine sarcoma viruses. THE JAPANESE JOURNAL OF EXPERIMENTAL MEDICINE 1980; 50:23-33. [PMID: 6247523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Avian sarcoma virus-transformed Indian muntjac cells, SR-Mm-1, formed foci by murine sarcoma-xenotropic murine leukemia virus complex [MSV(X-MuLV)] superinfection. The response of SR-Mm-1 and parental normal Indian muntjac Mm-2K cells to MSV(X-MuLV) infection was compared. Focus formation by MSV(X-MuLV) followed two-hit kinetics in Mm-2K, but one-hit kinetics in SR-Mm-1 cells. MSV(X-MuLV)-infected SR-Mm-1 cells formed larger colonies than uninfected SR-Mm-1 cells in soft agar, while no colony was formed in the MSV(X-MuLV)-infected Mm-2K cells. After infection with MSV(X-MuLV), cell clones doubly transformed by avian and murine sarcoma viruses could be established in SR-Mm-1 cells, whereas no cell clone could be established in Mm-2K cells. The doubly transformed cells were more round and refractile than SR-Mm-1 cells. No specific chromosomal change could be detected among Mm-2K, SR-Mm-1, and the doubly transformed cells. By two-dimensional polyacrylamide gel electrophoresis of cellular proteins, several changes were seen between Mm-2K and SR-Mm-1 cells. In MSV(X-MuLV)-infected Mm-2K and SR-Mm-1 cells, several similar changes in polypeptide patterns were seen as compared with uninfected cells. These results indicate that Mm-2K cells were doubly transformed by avian and murine sarcoma viruses, and MSV transformation in SR-Mm-1 cells was different from that in Mm-2K cells.
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268
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Watanabe S, Yoshiike K, Nozawa A, Yuasa Y, Uchida S. Viable deletion mutant of human papovavirus BK that induces insulinomas in hamsters. J Virol 1979; 32:934-42. [PMID: 229273 PMCID: PMC525942 DOI: 10.1128/jvi.32.3.934-942.1979] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A plaque morphology mutant (pm-522) of human papovavirus BK, which was rescued from a human papovavirus BK-induced hamster pineocytoma, was characterized and compared with a cloned wild-type virus (wt-501). Mutant pm-522 formed turbid plaques and grew more slowly than wt-501 in human embryonic kidney (HEK) cells. The immunofluorescence assay revealed that more HEK cells underwent abortive infection with pm-522 than with wt-501. Whereas wt-501 induced brain tumors and osteosarcomas, but no insulinomas, in hamsters, pm-522 induced brain tumors and insulinomas. The DNA of pm-522 was found by electrophoresis and electron microscopy to have a deletion (85 +/- 15 base pairs) and an insertion (40 +/- 10 base pairs) between map coordinates 0.708 and 0.725 from the endonuclease EcoRI cleavage site. These results demonstrate the presence of a viable deletion human papovarivus BK mutant capable of inducing insulinomas in hamsters.
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269
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Hirai R, Yuasa Y, Yamamoto T. Heat-labile character of murine sarcoma-xenotropic leukemia virus complex in duck cells. Virology 1979; 96:615-21. [PMID: 223320 DOI: 10.1016/0042-6822(79)90117-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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270
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Kanazawa K, Yamamoto T, Yuasa Y. Enhancement by asbestos of oncogenesis by Moloney murine sarcoma virus in CBA mice. Int J Cancer 1979; 23:866-74. [PMID: 223995 DOI: 10.1002/ijc.2910230620] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Five micrograms of finely ground crocidolite asbestos (UICC standard sample) were injected intraperitoneally into 3-week-old CBA mice, together with 10(5) FFU of Moloney murine sarcoma virus. Altogether 44 out of 61 mice (72.1%) so treated developed palpable intraperitoneal tumours, and half of these died of such tumours within 100 days. The same amount of quartz and carbon similarly administered gave lower tumour incidences, namely, 19.4% (3.2% fatal) and 11.9% (1.5% fatal) respectively. Only 1 out of 59 mice inoculated with the virus alone developed a palpable intraperitoneal tumour, and this regressed spontaneously within 10 days of its first appearance. No tumours were encountered in mice treated with either asbestos, quartz or carbon alone. All the neoplasms had the appearance, under the light microscope, of anaplastic sarcomas. Most of them were confined to the serosal surface of the abdominal cavity, although invasion of underlying tissues was observed in some of the animals that died. Electron microscopical examination of tumours revealed the presence of C-type particles budding off from cellular surface. Some neoplastic cells showed characteristic features of mesothelial lining cells. The role of milky spots (taches laiteuses) in oncogenesis by asbestos and virus, especially in the induction of mesothelioma, is discussed.
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271
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Tajiri M, Aizawa Y, Yuasa Y, Ohmori T, Nara Y, Hirasawa Y. Autonomic nervous dysfunction in patients on long-term hemodialysis. Nephron Clin Pract 1979; 23:10-13. [PMID: 109781 DOI: 10.1159/000181599] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The level of plasma dopamine-beta-hydroxylase (DBH) activity in subjects at rest was found to be significantly lower in 12 patients on long-term hemodialysis than in a healthy 8-member control group: 28.3 +/- 7.2 and 13.6 +/- 7.6 IU/1, respectively (p less than 0.01). Following immersion of one hand of each subject into cold water (4 degrees C) for 1 min, a significant rise was observed in both groups, 6.1 +/- 4.8 IU/1 for the control and 1.6 +/- 1.4 IU/1 for the patient group (p less than 0.01). Upon tilting up the head of all subjects, activity in both groups increased significantly, but a markedly smaller rise was found in the patient group: 5.8 +/- 4.8 and 1.1 +/- 1.6 IU/1 for the two groups, respectively (p less than 0.01). The data suggest an autonomic nervous dysfunction in patients on long-term hemodialysis.
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272
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Segawa K, Oda K, Yuasa Y, Shiroki K, Shimojo H. Phosphorylation of chromatin- and ribosome-associated proteins in cells transformed by adenovirus, murine sarcoma virus, and methylcholanthrene. J Virol 1978; 27:800-8. [PMID: 212594 PMCID: PMC525868 DOI: 10.1128/jvi.27.3.800-808.1978] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Endogenous protein phosphorylation in chromatin and ribosomes of monkey, mouse, and rat cells transformed by DNA, RNA tumor viruses, and a chemical carcinogen revealed the association of a protein of approximately 90,000 daltons (90K), which is highly phosphorylated in vitro. Peptide map analysis showed that the 90K proteins associated with these organelles of various transformed cells are similar irrespective of the species of cells and transforming agents. This species of protein could not be detected, or was scarcely detected, by phosphorylation in chromatin and ribosomes of untransformed cells and in revertants of transformed cells. These results suggest that the alteration in the pattern of endogenous protein phosphorylation in these organelles is closely related to the transformed state of cells.
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273
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Yuasa Y, Hirai R, Huh N, Shimojo H, Yamamoto T. Transformation of Indian muntjac cells by murine and avian sarcoma viruses. GAN 1978; 69:441-5. [PMID: 208907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Indian muntjac cells were efficiently transformed by murine sarcoma virus (MSV) and avian sarcoma viruses (ASV). When colony formation of the infected cells was examined in soft agar, many colonies were formed by the ASV-injected cells but no colony was seen in the MSV-infected cells. The ASV-transformed cell clones differed among the clones in morphology, presence of inducible ASV genome, and karyotypes.
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274
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Nishioka K, Hiramatsu K, Nagai J, Shiga H, Tanaka M, Hara N, Kohda E, Mohri M, Isobe Y, Yagishita A, Kodera K, Hisa N, Narimatsu Y, Sugino Y, Umemoto S, Izutsu M, Tsutsui T, Kosuda S, Ando Y, Eguchi K, Takada I, Ido K, Oh taki M, Seki T, Suzuki S, Ueda T, Yuasa Y, Katayama H, Shimano T, Koike N, Sakuyama K, Fujii M, Ebata K, Fujikawa K, Matsuyama M, Hyodo H, Osawa T, Takekawa S. [Radiological aspects of systemic diseases--practical classification by radiological abnormalities (author's transl)]. NIHON IGAKU HOSHASEN GAKKAI ZASSHI. NIPPON ACTA RADIOLOGICA 1978; 38:371-9. [PMID: 673667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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275
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Yuasa Y, Shimojo H. Isolation and preliminary characterization of temperature-sensitive mutants of the murine sarcoma leukaemia virus complex. J Gen Virol 1977; 36:257-66. [PMID: 197202 DOI: 10.1099/0022-1317-36-2-257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Five temperature-sensitive mutants (ts I to 5) were isolated from a stock of the Moloney strain of murine sarcoma leukaemia virus complex which had been mutagenized by ultraviolet irradiation or N-methyl-N'-nitro-N-nitrosoguanidine. In mouse cells at the non-permissive temperature the mutants formed fewer foci of transformed cells than at the permissive temperature. The ts mutants were characterized by testing: (I) murine leukaemia virus (MuLV) clones from the ts complex, (2) the effect of additional wild type MuLV on focus formation, (3) focus formation in rat cells and (4) focus formation with pseudotypes rescued from non-producer cells. Two mutants (ts 1 and ts 3) were found to be ts MuLVs which did not possess heat labile virion proteins and were not ts in post-penetration helper functions necessary for the fixation of sarcoma virus transformation. The remaining three mutants (ts 2, ts 4 and ts 5) were ts murine sarcoma viruses which, however, showed no temperature-sensitive effect on the maintenance of transformed cell morphology nor on colony forming efficiency in soft agar.
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276
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Aizawa Y, Yuasa Y, Ohmori T, Taziri M, Hirasawa Y. Diminished vascular reactivity to a cold stress in azotemic patients. JOURNAL OF DIALYSIS 1977; 1:781-92. [PMID: 608886 DOI: 10.3109/08860227709082390] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The integrity of the neurovascular reflex arc to a cold stimulus was evaluated by the determination of the response of the limb blood flow in fifteen azotemic patients. Seven of these patients became hypotensive during the course of renal failure despite comparable hemodialysis therapy. They showed a constant low blood pressure (mean blood pressure below 90 mmHg). The reactivity index (defined as the relative change at the 15th second of stimulus) was 15.9 +/- 14.4% for these hypotensive patients, and 35.7 +/- 12.0% for the remaining eight normotensive ones, while that of healthy subjects was 48.7 +/- 8.7%. The greatly diminished reactivity of the hypotensive patients could not be explained by humoral or hormonal factors. The dysfunction of somatic nerves of the vascular geometry could not be responsible for the difference. A dysfunction of adrenergic control of blood pressure was, therefore, strongly suggested.
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277
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Kai K, Ikeda H, Yuasa Y, Suzuki S, Odaka T. Mouse strain resistant to N-, B-, and NB-tropic murine leukemia viruses. J Virol 1976; 20:436-40. [PMID: 185426 PMCID: PMC355011 DOI: 10.1128/jvi.20.2.436-440.1976] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Mouse strain G was studied for its susceptibility to various strains of murine leukemia and sarcoma viruses. Both N- and NB-tropic Friend leukemia viruses neither induced splenomegaly nor grew efficiently in strain G mice. Using the XC test, cultured embryo cells were found to be resistant, but not absolutely, to all the tested viruses, N-tropic AKR virus, N- and NB-tropic Friend leukemia viruses, NB-tropic Rauscher leukemia virus, B-tropic WN1802B virus, NB-tropic Moloney leukemia and sarcoma viruses, and N-tropic Kirsten sarcoma virus, although the resistance to Moloney leukemia and sarcoma viruses is sometimes not as strong as that for other viruses. Thus, the strain G mice are unique among mouse strains because they show resistance that is not related to the N-B tropism of murine leukemia viruses.
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278
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Yuasa Y. [Impression on the Obstetrical and Pediatric Sections of the 5th Congress of the Japan Nursing Association]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1975; 28:603. [PMID: 1037861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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279
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Kuroki T, Miyashita SY, Yuasa Y. Development of a 3T3-like line from an embryo culture of an inbred strain of Syrian golden hamster. Cancer Res 1975; 35:1819-25. [PMID: 165885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An embryo culture of an inbred strain of Syrian hamster developed into a permanent cell line under the "3T3" 3 X 10-5 cells/60-mm dish. The resulting cell line had properties very similar to those of the mouse 3T3 series and was named HAMS 3T3. The cell showed density-dependent inhibition of division with a saturation density of 1.0 to 1.2 x 10-6 cells/60-mm dish or 4.5 to 5.5 x 10-4 cells/sq cm. Addition of fresh medium containing 5 or 10% fetal calf serum to a confluent culture induced DNA synthesis in 18 hr with subsequent cell division. Cells were hyperdiploid with a mode of 45 chromosomes (80% of the cells). When cells at the 60th passage were injected into the skin or cheek pouch of an inbred hamster of the same strain as that from which they were derived, they produced a benign tumor that regressed after 3 weeks. Morphological transformation was obtained by infection with the Moloney strain of murine sarcoma virus.
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280
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Yuasa Y, Shimojo H, Aoyagi T, Umezawa H. Effect of protease inhibitors on focus formation by murine sarcoma virus. J Natl Cancer Inst 1975; 54:1255-6. [PMID: 165316 DOI: 10.1093/jnci/54.5.1255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The effect of six protease inhibitors, isolated from various species of actinomycetes, on focus formation by murine sarcoma virus was examined. Pepstatin was the only inhibitor. The treatment of cells with pepstatin at various times possibly retards the early stage of infection with murine sarcoma virus.
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281
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Nakano K, Hatanaka I, Nakano T, Yuasa Y, Masaki R. [Case of degloving injury]. SEIKEIGEKA. ORTHOPEDIC SURGERY 1971; 22:997-9. [PMID: 4948211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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282
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Nakano K, Hatanaka S, Yuasa Y, Masaki R. [So-called "snapping finger" in young children]. SEIKEIGEKA. ORTHOPEDIC SURGERY 1970; 21:876-9. [PMID: 5528869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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283
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Nakano K, Hatanaka S, Yuasa Y, Masaki R. [Development of the hand. 5. Chronological changes of the tendon in the fetal stage from the aspect of amino acid composition]. SEIKEIGEKA. ORTHOPEDIC SURGERY 1969; 20:1360-3. [PMID: 5393126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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284
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Nakano K, Hatanaka I, Yuasa Y. [Embryological studies of the hand. 3. Sequential changes of the lateral tendon synovial membrane and the bone of the finger]. SEIKEIGEKA. ORTHOPEDIC SURGERY 1968; 19:89-91. [PMID: 5692362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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