A chalcone with potent inhibiting activity against biofilm formation by nontypeable Haemophilus influenzae.

abstract：:The function of MHC class II HLA-DR molecules expressed on a human B lymphoid progenitor cell line FL8.2.4.4 (abbreviated as FL4.4) was examined. FL4.4 cells expressed HLA-DR molecules and stimulation of the DR molecules by anti-DR mAb or by superantigen TSST-1 induced strong augmentation of homocytic aggregation and ...

journal_title：Microbiology and immunology

authors： Naitoh K,Ichigi Y,Miyake K,Muraguchi A,Kimoto M

更新日期：1994-01-01 00:00:00

abstract：:A leukocidin was isolated and purified from autolysates of Pseudomonas aeruginosa strain 158 by a combination of procedures such as column chromatography on DEAE-Sephadex A-50, gel filtration on Sephadex G-100, and zone electrophoresis on pevikon. The purified preparation showed a single band in each experiment using ...

journal_title：Microbiology and immunology

authors： Hirayama T,Kato I,Matsuda F,Noda M

更新日期：1983-01-01 00:00:00

abstract：:Human immunodeficiency virus type-1 (HIV-1) infection generally provokes antibody responses to the viral envelope glycoprotein. Two major regions of gp120, the third variable (V3) domain and the CD4-binding site, have been identified as neutralization targets. The precise mechanism of HIV-1 neutralization by antibodie...

journal_title：Microbiology and immunology

authors： Harada S

更新日期：2002-01-01 00:00:00

abstract：:We have developed an indirect microhemagglutination test (IMHA) for detecting antibodies to Borrelia burgdorferi using formalin-fixed chicken erythrocytes sensitized with a sonicated extract of the bacteria. The specificity of IMHA for Lyme disease was compared with that of a conventional indirect immunoperoxidase tec...

journal_title：Microbiology and immunology

authors： Fujita H,Sato T,Ohara Y,Homma M

更新日期：1991-01-01 00:00:00

abstract：:Virulence of hantavirus strain of SR-11 Seoul virus and Hantaan 76-118 (HTN) of Hantaan virus were compared. Infections of both strains were lethal in newborn mice. However, inoculum required to cause lethal infection was about 4,000 times higher for strain HTN (1.65 x 10(3) PFU/mouse/LD50) than for strain SR-11 (0.36...

journal_title：Microbiology and immunology

authors： Yoo YC,Yoshimatsu K,Yoshida R,Tamura M,Azuma I,Arikawa J

更新日期：1993-01-01 00:00:00

abstract：:An important toxin-antitoxin (TA) system hok/sok, encoded by R1 plasmid of Escherichia coli, is involved in the post segregation killing of cells that have lost the plasmid. The lethal properties of hok protein have been utilized for the environmental containment of microbes and the development of potential vaccine ca...

journal_title：Microbiology and immunology

authors： Kaur A,Muthukumarappa T,Kanta P,Banday AZ,Chidananda MK

更新日期：2020-11-01 00:00:00

abstract：:An antiserum against a fraction enriched for scrapie-associated fibrils (SAF), was examined for its effects on scrapie incubation period by inoculating mice either intraperitoneally or intracerebrally with various dilutions of the serum mixed with scrapie-infected mouse brain homogenate. After intraperitoneal inoculat...

journal_title：Microbiology and immunology

authors： Ito M,Shinagawa M,Doi S,Sasaki S,Isomura H,Takahashi K,Goto H,Sato G

更新日期：1988-01-01 00:00:00

abstract：:VacA, a secretory product of Helicobacter pylori, binds to its cell surface receptor, receptor tyrosine phosphatase (RPTP) beta, leading to cytoplasmic vacuolization of gastric epithelial AZ-521 cells. VacA binding to the cell surface and VacA-dependent vacuolization were inhibited by cell culture media containing fet...

journal_title：Microbiology and immunology

authors： Kimura T,Wada A,Nakayama M,Ogushi K,Nishi Y,De Guzman BB,Moss J,Hirayama T

更新日期：2003-01-01 00:00:00

abstract：:Susceptibility of eight strains of influenza A and B viruses to interferon and to poly(I) . poly(C) were determined by the plaque reduction method. All strains tested were slightly less susceptible than vesicular stomatitis virus (VSV) in an established line of canine kidney (MDCK) cells. The 50% plaque depression dos...

journal_title：Microbiology and immunology

authors： Machida H,Kuninaka A,Yoshino H

更新日期：1980-01-01 00:00:00

abstract：:Vpr, one of the accessory molecules of HIV-1, has been demonstrated to arrest the cell cycle at the G2 phase. This Vpr-mediated cell cycle arrest is implicated to have an important role in the viral life cycle. In the present study, we quantitate the extent of Vpr-mediated cell cycle arrest with the use of a bicistron...

journal_title：Microbiology and immunology

authors： Yamaguchi T,Watanabe N,Nakauchi H,Koito A

更新日期：1999-01-01 00:00:00

abstract：:Recurrent otitis media are frequently intractable during childhood. It is unclear whether recurrent otitis media is caused by etiological bacteria colonization or by new infections. Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis were isolated from the nasopharynx of 7 otitisprone and 2 non-...

journal_title：Microbiology and immunology

authors： Yokota S,Harimaya A,Sato K,Somekawa Y,Himi T,Fujii N

更新日期：2007-01-01 00:00:00

abstract：:Cattle enterotoxemia caused by Clostridium perfringens toxins is a noncontagious, sporadic, and fatal disease characterized by sudden death. Strategies for controlling and preventing cattle enterotoxemia are based on systematic vaccination of herds with toxoids. Because the process of producing conventional clostridia...

journal_title：Microbiology and immunology

authors： Jiang Z,De Y,Chang J,Wang F,Yu L

更新日期：2014-11-01 00:00:00

abstract：:The cell division-related gene A (cdrA) of Helicobacter pylori is dispensable in vivo and unique in having a repressive role on cell division and long-term survival. To clarify its role, comparisons of the wildtype HPK5 and isogenic cdrA-disrupted mutant HPKT510 were examined by ultrastructural morphology, PBP profile...

journal_title：Microbiology and immunology

authors： Takeuchi H,Nakazawa T,Okamoto T,Shirai M,Kimoto M,Nishioka M,Con SA,Morimoto N,Sugiura T

更新日期：2006-01-01 00:00:00

abstract：:We developed a rapid and simple method for the screening of antiviral agents against herpes simplex virus (HSV) in a model of gastrointestinal herpetic infection in vitro. This method was based on inhibition of HSV-induced cytopathogenicity in gastric adenocarcinoma MKN-28 cells, as monitored by an MTT colorimetric as...

journal_title：Microbiology and immunology

authors： Kodama E,Igarashi A,Mori S,Hashimoto K,Suzuki T,De Clercq E,Shigeta S

更新日期：1996-01-01 00:00:00

abstract：:One strain each of granular and downy varieties of Trichophyton mentagrophytes and two strains each of granular and floccose colonial types Trichophyton rubrum were used for preparation of antigens. The antigens were analyzed by double diffusion against homologous and heterologous antisera raised in rabbits. A total o...

journal_title：Microbiology and immunology

authors： Shukla NP,Agarwal GP

更新日期：1983-01-01 00:00:00

abstract：:The immunostimulatory effect of intragastrically or parenterally administered beta-(1-->3; 1-->4) glucan, extracted from oats (ObetaG), on disease resistance to Eimeria vermiformis was studied in C57BL/6 mice. Multiple administrations of ObetaG by intragastric or subcutaneous routes reduced fecal oocyst shedding compa...

journal_title：Microbiology and immunology

authors： Yun CH,Estrada A,Van Kessel A,Gajadhar A,Redmond M,Laarveld B

更新日期：1998-01-01 00:00:00

abstract：:A solubilized sheep red blood cell (SRBC) antigen (supernatant fraction obtained by centrifuging 10(7)-2 x 108 sonicated SRBC at 6 x 10(4) g for 30 min [Sup-SRBC]), whose ability to inhibit anti-SRBC plaque formation was 70% of that of the original sonicated SRBC, was unable to elicit a detectable antibody response in...

journal_title：Microbiology and immunology

authors： Nagase F,Nakashima I,Nagase N,Kato N

更新日期：1982-01-01 00:00:00

abstract：:An 8-year-old girl with meningococcal meningitis lacked serum complement activity. The seventh component of complement (C7) could not be detected in her serum by either functional or immunochemical analysis. The levels of the other components were within the normal range. Her serum complement activity was restored by ...

journal_title：Microbiology and immunology

authors： Miyake T,Ohta K,Kawamori J,Hirao T,Akagaki Y,Inai S

更新日期：1986-01-01 00:00:00

abstract：:There is a deficiency in the data concerning the role of hMPV in lower respiratory tract infections in adults, and until now there has been no data available regarding the prevalence of hMPV in adults in our region. In the present study the association of hMPV with varieties of lower respiratory tract disorders in imm...

journal_title：Microbiology and immunology

authors： El Sayed Zaki M,Raafat D,El-Metaal AA,Ismail M

更新日期：2009-11-01 00:00:00

abstract：:Recombinant human interferon-gammas (rHuIFN-gamma s) were obtained from two different mammalian cells (mouse C127 cells and Chinese hamster ovary, CHO, cells) cultured in a microcarrier culture system. Both rHuIFN-gamma s were purified using sequential chromatographies for their comparison of structural properties. Th...

journal_title：Microbiology and immunology

authors： Sano E,Kamata K,Okano K,Yamazaki S,Iizuka M,Kobayashi S

更新日期：1988-01-01 00:00:00

abstract：:Three hundred and twenty-five breast milk samples were examined for the occurrence of human cytomegalovirus (HCMV) by cell culture method. Virus was isolated from the milk in 1 of 177 samples collected within 6 days after delivery, 2 of 115 samples collected during the period of 7 days to 1 month after delivery, 10 of...

journal_title：Microbiology and immunology

authors： Hotsubo T,Nagata N,Shimada M,Yoshida K,Fujinaga K,Chiba S

更新日期：1994-01-01 00:00:00

abstract：:Salmonella typhimurium strain 9 produces mini-cells during cell proliferation. Mini-cells are viable but cannot proliferate since they do not contain chromosomal DNA. Effects of whole cells and mini-cells of S. typhimurium on the immune responses were investigated, with the following results. Phagocytosis of peritonea...

journal_title：Microbiology and immunology

authors： Kurashige S,Yoshida T,Kodama K,Mitsuhashi S

更新日期：1981-01-01 00:00:00

abstract：:An environmental isolate of V. mimicus, strain E-33, has been reported to produce and secrete a hemolysin of 63 kDa. The hemolysin is enterotoxic in test animals. The nucleotide sequence of the structural gene of the hemolysin was determined. We found a 2,232 bp open reading frame, which codes a peptide of 744 amino a...

journal_title：Microbiology and immunology

authors： Rahman MM,Miyoshi S,Tomochika K,Wakae H,Shinoda S

更新日期：1997-01-01 00:00:00

abstract：:A new type of immuno-cell therapy called BRM-activated killer (BAK) therapy using non-MHC-restricted lymphocytes, CD56-positive cells, was devised. Peripheral blood lymphocytes were selected by immobilization with anti-CD3 monoclonal antibody and cultured for 2 weeks in the presence of IL-2. Thereafter, they were reac...

journal_title：Microbiology and immunology

authors： Ebina T,Ogama N,Shimanuki H,Kubota T,Isono N

更新日期：2001-01-01 00:00:00

abstract：:In Streptococcus pneumoniae, heat shock induces the synthesis of 65-, 73-, and 84-kDa proteins, and ethanol shock induces a 104-kDa protein. In this study, the 65-, 84-, and 104-kDa proteins were identified as members of the GroEL, ClpL and alcohol dehydrogenase families, respectively, and the general properties of th...

journal_title：Microbiology and immunology

authors： Choi IH,Shim JH,Kim SW,Kim SN,Pyo SN,Rhee DK

更新日期：1999-01-01 00:00:00

abstract：:gp96 plays a central role in innate as well as acquired immunity, maturation and chemotaxis of dendritic cells, Ab production, and cross-priming, and is a peptide acceptor in endoplasmic reticulum and an accessory to peptide loading of MHC class I molecules. The remarkable conservation of essential immunological prope...

journal_title：Microbiology and immunology

authors： Cho NH,Choi CY,Seong SY

更新日期：2004-01-01 00:00:00

abstract：:We investigated here the kinetics of natural killer (NK) cells and extrathymic T cells, which include intermediate CD3 cells and gamma delta T cells, in the cord factor-induced granulomatous inflammation of the lungs and liver. In Balb/c mice, pulmonary inflammation elevated the proportion of NK cells and that of extr...

journal_title：Microbiology and immunology

authors： Tabata A,Kaneda K,Watanabe H,Abo T,Yano I

更新日期：1996-01-01 00:00:00

abstract：:Clostridium perfringens KZ1340 isolated from Antarctic soil was first classified as Clostridium plagarum and later as a lecithinase-negative variant of C. perfringens. Although the strain produced no detectable lecithinase (phospholipase C, PLC) activity in the culture supernatant, it was shown by Southern blot hybrid...

journal_title：Microbiology and immunology

authors： Kameyama K,Matsushita O,Katayama S,Minami J,Maeda M,Nakamura S,Okabe A

更新日期：1996-01-01 00:00:00

abstract：:The plasma concentration of soluble P-selectin (GMP-140/CD62P/PADGEM), a selectin produced by activated platelets and endothelial cells, was quantitated in a group of adults and East African negro children presenting with either non-severe or severe (cerebral) malaria caused by Plasmodium falciparum. Sixty percent of ...

journal_title：Microbiology and immunology

authors： Facer CA,Theodoridou A

更新日期：1994-01-01 00:00:00

abstract：:Bifidobacteria are important members of the intestinal microbiota and are considered to contribute to maintaining health. However, the level of bifidobacteria colonising the intestine of elderly subjects tends to be lower than in younger adults. Therefore, two Bifidobacterium longum strains, isolated from healthy elde...

journal_title：Microbiology and immunology

authors： Mäkeläinen H,Tahvonen R,Salminen S,Ouwehand AC

更新日期：2003-01-01 00:00:00