نتایج جستجو برای: surface display and bacterial pili

تعداد نتایج: 16970276  

2014
Mark T. Anderson Lena Dewenter Berenike Maier H. Steven Seifert

Niche-restricted pathogens are evolutionarily linked with the specific biological fluids that are encountered during infection. Neisseria gonorrhoeae causes the genital infection gonorrhea and is exposed to seminal fluid during sexual transmission. Treatment of N. gonorrhoeae with seminal plasma or purified semen proteins lactoferrin, serum albumin, and prostate-specific antigen each facilitate...

2003
MARK EDWARDS RALPH L. McDADE GARY SCHOOLNIK JONATHAN B. ROTHBARD EMIL C. GOTSCHLICH

The attachment of gonococci to mucosal surfaces is of primary importance in their interactions with the genito-urinary tract of the human host. This process may be, in part, mediated by pili, which are proteinaceous appendages emanating from the bacterial cell surface. Observations by Kellogg et al. (1) suggested that certain colonial morphological phenotypes are associated with virulence. Subs...

Journal: :Science 2011
Julia Chamot-Rooke Guillain Mikaty Christian Malosse Magali Soyer Audrey Dumont Joseph Gault Anne-Flore Imhaus Patricia Martin Mikael Trellet Guilhem Clary Philippe Chafey Luc Camoin Michael Nilges Xavier Nassif Guillaume Duménil

The Gram-negative bacterium Neisseria meningitidis asymptomatically colonizes the throat of 10 to 30% of the human population, but throat colonization can also act as the port of entry to the blood (septicemia) and then the brain (meningitis). Colonization is mediated by filamentous organelles referred to as type IV pili, which allow the formation of bacterial aggregates associated with host ce...

2010
YuZhen Ye Mark J. Pallen Brendan W. Wren Ulrich Dobrindt Bianca Hochhut Ute Hentschel

Figure 25-4 Bacterial shapes and cell-surface structures Bacteria are classified into three different shapes: (A) spheres (cocci), (B) rods (bacilli), and (C) spiral cells (spirochetes). (D) They are also classified as Gram-positive or Gram-negative. Bacteria such as Streptococci and Staphylococci have a single membrane and a thick cell wall made of cross-linked peptidoglycan. They retain the v...

Journal: :The Journal of clinical investigation 1989
B Drumm A W Neumann Z Policova P M Sherman

The role of hydrophobicity in the attachment of enteropathogens to gastrointestinal mucosa is controversial. In vitro binding of Escherichia coli RDEC-1 to rabbit intestine is dependent on the expression of pili. We examined in vitro adherence of piliated RDEC-1 after altering either the hydrophobicity of the organisms, the hydrophobicity of the substrate for attachment, or the surface tension ...

Journal: :Contributions to microbiology 2005
Ann-Beth Jonson Staffan Normark Mikael Rhen

2015
Fang Sun Xiaoyun Pang Tian Xie Yujia Zhai Ganggang Wang Fei Sun

BACKGROUND Bacterial surface display technique enables the exogenous proteins or polypeptides displayed on the bacterial surface, while maintaining their relatively independent spatial structures and biological activities. The technique makes recombinant bacteria possess the expectant functions, subsequently, directly used for many applications. Many proteins could be used to achieve bacterial ...

Journal: :Infection and immunity 2001
M A Mulvey J D Schilling S J Hultgren

The vast majority of urinary tract infections are caused by strains of uropathogenic Escherichia coli that encode filamentous adhesive organelles called type 1 pili. These structures mediate both bacterial attachment to and invasion of bladder epithelial cells. However, the mechanism by which type 1 pilus-mediated bacterial invasion contributes to the pathogenesis of a urinary tract infection i...

2011
Anirban Banerjee Brandon J. Kim Ellese M. Carmona Andrew S. Cutting Michael A. Gurney Chris Carlos Ralph Feuer Nemani V. Prasadarao Kelly S. Doran

Group B Streptococcus (GBS) is the leading cause of meningitis in newborn infants. Bacterial cell surface appendages, known as pili, have been recently described in streptococcal pathogens, including GBS. The pilus tip adhesin, PilA, contributes to GBS adherence to blood-brain barrier (BBB) endothelium; however, the host receptor and the contribution of PilA in central nervous system (CNS) dise...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید