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991.
992.
Yasuo Kanamoto Yoshio Iijima Naoyuki Miyashita Akira Matsumoto Takashi Sakano 《Microbiology and immunology》1993,37(6):495-498
The morphology and antigenic property of elementary bodies (EBs) of new Chlamydia pneumoniae YK-41 strain isolated in Hiroshima, Japan, were compared with those of C. pneumoniae strains TW-183 and AR-39, C. trachomatis L2/434/Bu strain and C. psittaci Cal 10 and Budgerigar-1 strains by SDS-PAGE and immunoblotting techniques. In spite of a clear difference in EB morphology between the YK-41 and the other C. pneumoniae strains used, protein profile of the YK-41 strain in SDS-PAGE was similar to that of the other strains. However, some quantitative difference in 200 and 98 kDa peptides and a faint difference in SDS-PAGE pattern was also observed in the molecular masses from 42 to 50 kDa. Immunoblot analysis with the patient serum at the convalescent stage revealed the presence of genus-specific and species-specific antigens in YK-41 EBs: i. e., the major outer membrane protein and 73 kDa peptides were genus-specific and the peptides of 43, 46, 53, 60 and 98 kDa appeared to be C. pneumoniae-specific. 相似文献
993.
Yoshio Koyanagi Tsutomu Yoshida Michihiko Suzuki Alagappan Uma Lalitha Ananthasubramaniam Subbiah Ramajayam Naoki Yamamoto 《Microbiology and immunology》1993,37(12):983-986
A dually HIV-and HTLV-infected ARC patient was found by serological studies in South India. These viruses were isolated and molecular study showed that the patient had both HIV-1 and HTLV-I but not HIV-2 and HTLV-II. In addition to this, 9 other dually infected persons which include another full-blown AIDS case have been identified as on July 1993 in South India. Our findings provide an opportunity to clarify geographical distribution of these human retroviruses. 相似文献
994.
Nitta Kazuo; Oyama Fumitaka; Oyama Rieko; Sekiguchi Kiyotoshi; Kawauchi Hiroaki; Takayanagi Yoshio; Hakomori Sen-itiroh; Titani Koiti 《Glycobiology》1993,3(1):37-45
Sialic acid-binding lectin (SBL) isolated from Rana catesbeianaeggs is a basic protein which agglutinates a large variety oftumour cells and has an amino acid sequence homologous to thatof human angiogenin and pancreatic ribonuclease (RNase). AlthoughSBL and angiogenin lack the Cys-65-Cys-72 disulphide bond ofpancreatic RNase, the locations of the other three disulphidebonds are similar among the three molecules. SBL was found toexhibit RNase activity, as well as catalytic properties resemblingthose of bovine RNase A in some respects. For example, SBL hydrolysespoly(uridylic acid) and poly(cytidylic acid) as substrates,and prefers the former. RNase A and angiogenin are stronglyinhibited by human placental RNase inhibitor, whereas the RNaseactivity and tumour cell agglutination activity of SBL are notaffected by this inhibitor. 相似文献
995.
Androgen receptor gene mutations in human prostate cancer 总被引:13,自引:0,他引:13
Hiroyoshi Suzuki Naohide Sato Yoshio Watabe Motoyuki Masai Susumu Seino Jun Shimazaki 《The Journal of steroid biochemistry and molecular biology》1993,46(6):759-765
To investigate the structural abnormality of the androgen receptor (AR) in human prostate cancers, exons B-H encoding DNA- and hormone-binding domains were examined by single-strand conformation polymorphism analysis of polymerase chain reaction products using originally designed oligoprimers. Tissues from 7 cases of untreated stage B prostate cancer surgically removed and from 8 cases of endocrine therapy-resistant cancers obtained at autopsy were used in the study. Two different mutations were identified in exons D and H in the different cancer foci of the same cancer death patient. One mutation in exon D (at codon 701, Leu to His) was detected in the prostate, and the other in exon H (at codon 877, Thr to Ala) was found in metastatic tissues. In untreated cancer tissues and the other autopsy samples, no mutations were detected. The mutation in exon H was identical to that reported in LNCaP cells. These results indicate that AR gene mutations occur in relation to endocrine therapy-resistance, although the mutation was found in 1 out of 8 resistant cases (12.5%) at autopsy. 相似文献
996.
Masaki Inoue MD Yoshiaki Tanaka Nagatoshi Sugita Masato Yamasaki Tadashi Yamanaka Junnosuke Minagawa Karo Nakamuro Toshiro Tani Yoshio Okudaira Tuguhiro Karita Katsumi Takayama Tatsuo Ide Osamu Tanizawa 《Biotherapy》1993,6(1):13-18
The effect of immunotherapy using sizofiran (SPG) on the prognosis of patients with ovarian cancers was prospectively studied in a total of 68 patients, who were randomly assigned to either a cisplatin, adriamycin and cyclophosphamide (PAC) therapy group or a PAC plus SPG combination therapy group.The survival rate was significantly higher in patients with stage Ic, II or III cancers treated with the PAC plus SPG combination, compared with the patients treated with PAC alone. In the SPG-receiving patients with stage Ic or more advanced cancers who were treated with four cycles or more of PAC, the outcome was improved (Cox-Mantel, p=0.074; generalized Kruskal-Wallis, p=0.032). Similar improvement was also observed in the patients with non-serous adenocarcinomas (Cox-Mantel, p-0.076; generalized Krukal-Wallis, p=0.045). No side effects attributable to SPG were recorded.The present results suggest that the use of SPG in combination with long-term chemotherapy improves the postoperative prognosis in ovarian cancer patients.Abbreviations SPG
sizofiran 相似文献
997.
998.
Fumitoshi Irie Hitomi Murakoshi Takashi Suzuki Yasuo Suzuki Kazuo Kon Susumu Ando Kunihiro Yoshida Yoshio Hirabayashi 《Glycoconjugate journal》1995,12(3):290-297
We previously reported for the first time two Japanese patients with aspartylglycosaminuria (AGU). A novel disialo Asn N-glycoside (AG-5) has been isolated from the urine of one of the patients in addition to four known monosialo Asn N-glycosides (AG-1 to AG-4) by gel filtration and anion exchange chromatography in this study. Final purification of AG-5 was achieved by an electrochemical chromatographic method, high performance liquid chromatography with pulsed amperometric detector (HPLC-PAD). The yield of AG-5 was approximately 1 mg l–1 urine. The chemical structures of AG-1 to AG-5 were characterized by gas-liquid chromatography, a permethylation study, fast atom bombardment-mass spectrometry (FAB-MS), and nuclear magnetic resonance (NMR). Based on the structural analysis, AG-5 had the following novel structure: NeuAc2 8NeuAc2 3Gal1 4GlCNAc1 Asn. 相似文献
999.
K. H. Nomura Ryuji Kobayashi Yoshio Hirabayashi Megumi Fujisue-Sakai Souhei Mizuguchi Kazuya Nomura 《Development genes and evolution》1998,208(1):9-18
Despite their wide distribution in various organisms, no physiological roles have been proposed for the human blood-group-ABO
(ABH)-active trisaccharides. Here we show that monoclonal antibodies against human blood-group-B-active trisaccharides (B-substance)
completely block the Ca2+-dependent cell-cell adhesion system of frog (Xenopus
laevis) embryonic cells. Synthetic B-substance or B-active glycopeptides also disrupt the Ca2+ -dependent cell-cell adhesion. These results suggest that blood-group-B-active substances play a role in cell-cell adhesion.
Blood-group-B-active substances were found as glycoproteins and as glycosphingolipids. In order to identify B-active glycoproteins
active in cell-cell adhesion, we purified B-active membrane glycoproteins by two-dimensional electrophoresis and found that
they are 45- to 58-kDa proteins with pI(s) ranging from 4.0 to 5.3. They are glycosylphosphatidyl inositol (GPI) anchored.
Amino acid sequence analysis showed that the purified B-active GPI-anchored proteins are homologues of soluble Xenopus cortical granule lectins (CGL). The results suggest that the B-active membrane glycoproteins are GPI-anchored forms of the
lectin and are directly involved in frog Ca 2+-dependent cell-cell adhesion.
Received: 16 September 1997 / Accepted 19 November 1997 相似文献
1000.
Masayuki Yasuno Yoshio Sugaya Kunimitsu Kaya Makoto M. Watanabe 《Phycological Research》1998,46(S2):31-36