Abstract:
:Fimbrial adhesins and hemolysins contribute to pathogenicity of extraintestinal Escherichia coli isolates causing urinary tract infections (UTI), sepsis and new born meningitis (NBM). Using gene cloning techniques and pulse field electrophoresis in combination with Southern hybridizations it was demonstrated that the genetic determinants coding for P and 'P-related' fimbrial adhesins and hemolysins are closely linked on the chromosomes of different pathogenic E. coli wild-type isolates. For two UTI strains, 536 (O6:K15) and J96 (O4:K6), a co-deletion of the linked gene clusters coding for hemolysin and fimbriae was observed. The deleted DNA regions which also comprise flanking DNA sequences were termed 'pathogenicity DNA islands'. Such 'pathogenicity DNA islands' were also detected in the genome of O18:K1 isolates of OMP type 6 but were absent on the chromosomes of O18:K1 strains of OMP type 9. A mutant strain, 536-22 was selected from rat kidneys after intraurethral infection of animals with the wild-type parental strain 536. This particular isolate also shows deletions of 'pathogenicity islands' leading to a non-pathogenic phenotype. It is therefore concluded that excisions of 'pathogenicity islands' from chromosomes of pathogenic E. coli strains are not restricted to the laboratory but also occur in vivo. The generation of deletions may represent a general mechanism of bacterial virulence modulation.
journal_name
Microb Pathogjournal_title
Microbial pathogenesisauthors
Hacker J,Bender L,Ott M,Wingender J,Lund B,Marre R,Goebel Wdoi
10.1016/0882-4010(90)90048-usubject
Has Abstractpub_date
1990-03-01 00:00:00pages
213-25issue
3eissn
0882-4010issn
1096-1208pii
0882-4010(90)90048-Ujournal_volume
8pub_type
杂志文章abstract::Medicinal plants are often the only therapeutic resource for many communities and ethnic groups. Cordia verbenacea DC., "Erva-baleeira," is one of the species of plants currently used to produce a phytotherapeutic product extracted from its leaves. The present study aimed to establish its chemical profile, antibacteri...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2016.03.009
更新日期:2016-06-01 00:00:00
abstract::Biosynthesis of nanoparticles by fermented plants using microbes is an eco-friendly and cost-effective process. In this study, we used the fungus Aspergillus orayzae for the fermentation process. The aqueous extract of fermented Lupin (AEFL) possesses the ability to reduce selenium ion in the presence of gamma rays ev...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2018.06.013
更新日期:2018-09-01 00:00:00
abstract::The study was conducted to examine the antioxidant enzymes induced by Trichoderma viride JAU60 as initial defense response during invasion of rot pathogen Aspergillus niger Van Tieghem in five groundnut varieties under pot culture. Seed treatment of T. viride JAU60 reduced 51-58% collar rot disease incidence in differ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2015.11.010
更新日期:2016-02-01 00:00:00
abstract::The initiation of many infectious diseases involves specific adhesion of bacteria to host tissue proteins and carbohydrates. Staphylococcus aureus is known to bind specifically to several proteins in the extracellular matrix (ECM). We report the quantification of the collagen and fibronectin adhesin densities on the s...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1006/mpat.2000.0399
更新日期:2000-12-01 00:00:00
abstract::The reactivity of anti-pilus antibodies to native and denatured Haemophilus influenzae b (Hib) pili was studied using rabbit serum prepared against piliated H. influenzae b strain M43 (p+) and adsorbed with its non-piliated variant, strain M42 (p-). The specificity of the adsorbed serum for Hib pili was documented by ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/0882-4010(89)90049-1
更新日期:1989-10-01 00:00:00
abstract::Ectoine, the most prominent osmolyte in nature, is a vital compatible solute present in halophilic bacterium. It protects the cellular biomolecules of the halophilic bacteria and retains their intrinsic function from extreme circumstances. In the current research, ectoine biosynthesis gene cluster (ectABC) in Bacillus...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.103693
更新日期:2019-11-01 00:00:00
abstract::Monocyte chemoattractant protein-1 (MCP-1), a chemoattractant for monocytes, is presumed to play a pivotal role in the recruitment and accumulation of monocytes in various diseases including pulmonary infections. We examined here whether or not Pseudomonas nitrite reductase (PNR), a recently identified IL-8 inducer in...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1006/mpat.1999.0320
更新日期:2000-01-01 00:00:00
abstract::To assess the role of mannosylated lipoarabinomannan (ManLAM) in the inflammatory and apoptotic response of mycobacteria-infected and uninfected, bystander cells we applied a mouse macrophage model of infection with avirulent strains--Mycobacterium bovis BCG, Mycobacterium tuberculosis (MTB) H37Ra and compared with a ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2011.03.004
更新日期:2011-07-01 00:00:00
abstract::Mannheimia(Pasteurella)haemolytica serotype 1 is the primary causative agent responsible for bovine pneumonic mannheimiosis, also known as shipping fever in cattle. The bacterium produces a variety of virulence factors, foremost of which is the exotoxic leukotoxin. The leukotoxin is a calcium-dependent cytolysin that ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/s0882-4010(03)00033-0
更新日期:2003-05-01 00:00:00
abstract::Escherichia coli O157:H7 is a food-borne pathogen that can cause hemorrhagic colitis and, occasionally, hemolytic uremic syndrome, a sequela of infection that can result in renal failure and death. Here we sought to model the pathogenesis of orally-administered E. coli O157:H7 in BALB/c mice with an intact intestinal ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2010.01.003
更新日期:2010-03-01 00:00:00
abstract::In recent years, blast disease caused by Magnaporthe grisea, an ascomycete fungus is becoming a serious threat to pearl millet crop in India and worldwide. Due to the increase in virulent races of pathogen, blast disease management strategies seemed to be very limited. Hence, unraveling the occurrence of blast isolate...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2020.104533
更新日期:2020-12-01 00:00:00
abstract::Influenza virus is responsible for significant morbidity and mortality worldwide. Acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) is the major cause of death in influenza virus infected patients. Recent studies indicated that active glucagon like peptide-1 (GLP-1) encoded by glucagon (GCG) gene exer...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2020.104645
更新日期:2020-12-05 00:00:00
abstract:INTRODUCTION:Tuberculosis (TB) is considered as a serious complication of organ transplant; therefore, the detection and appropriate treatment of active TB infection is highly recommended for the reduction of mortality in the future. The aim of this review was to conduct a systematic review and meta-analysis assessing ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章,meta分析
doi:10.1016/j.micpath.2019.103894
更新日期:2020-02-01 00:00:00
abstract:OBJECTIVE:Pseudomonas aeruginosa, an opportunistic pathogen, can cause serious health problems and produces several virulence factors. The most important of these factors is biofilm. Many studies suggest administration of new generation of antibiotics, as P. aeruginosa biofilm has developed high resistance to antimicro...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2018.03.055
更新日期:2018-05-01 00:00:00
abstract::The bacterial phylum Synergistetes consists of Gram-negative anaerobes. Oral Synergistetes are divided in two main clusters, namely A and B. Increasing evidence demonstrates their involvement in etiology of oral infections, including apical periodontitis. This condition causes bone loss around the apex of the tooth, s...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2014.05.001
更新日期:2014-08-01 00:00:00
abstract::Tick-borne bacteria are considered to be emerging in camels, but data about their occurrence in Tunisian dromedaries and their infesting ticks remain scarce. In this study, 412 camel blood samples and 327 partially engorged ticks were collected and tested for the presence of Coxiella burnetii and/or related strains, a...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.103655
更新日期:2019-11-01 00:00:00
abstract::A specific mistranslation mechanism for the replication of an infectious protein is described. The feedback mechanism requires the infectious agent to induce concerted frameshifts during the translation of a cellular gene. Each module of the tandem repeat region of the gene encoding the prion protein (PrP) associated ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章,评审
doi:10.1016/0882-4010(89)90098-3
更新日期:1989-04-01 00:00:00
abstract::Limited deep studies are available in the field of early stages of pathogenesis of Newcastle disease virus (NDV) infection and tissue tropism of NDV. In this study, 24 specific pathogen free (SPF) chickens of white leghorn breed were infected with Newcastle disease (ND) by intranasal administration of 10⁵ 50% EID50/0....
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.02.017
更新日期:2019-04-01 00:00:00
abstract::Infectious urinary stones account for about 10% of all urinary stones. In 50% of cases urolithiasis is a recurrent illness, which can lead to the loss of a kidney if not properly treated. One of the reasons for recurrence of the disease may be the ability of bacteria to invade urothelial cells, persist in the host cel...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2014.04.007
更新日期:2014-06-01 00:00:00
abstract::Because of the close genetic relatedness between apes and humans, apes are susceptible to many human infectious agents and can serve as carriers of these pathogens. Consequently, they present a serious health hazard to humans. Moreover, many emerging infectious diseases originate in wildlife and continue to threaten h...
journal_title:Microbial pathogenesis
pub_type: 杂志文章,评审
doi:10.1016/j.micpath.2014.09.003
更新日期:2014-12-01 00:00:00
abstract::Our previous studies have shown that the adhesive ability of Enterococcus faecalis is dependent on the strain and is further modified by growth in serum. The data reported here demonstrate that E. faecalis adherence is mediated by carbohydrate residues present on the bacterial cell surface. Some of these (D-mannose an...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/0882-4010(91)90036-a
更新日期:1991-12-01 00:00:00
abstract::The macrophage innate immune response is outlined through recognition of the components of Mycobacterium tuberculosis. DNA of M. tuberculosis (MtbDNA) is recognized by macrophages, but the implications of this recognition are poorly characterized. Stimulation of murine macrophages with MtbDNA induces autophagy, a proc...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.04.041
更新日期:2019-07-01 00:00:00
abstract::Pertussis toxin (PT) is an important virulence determinant of Bordetella pertussis and one of the major protective antigens against whooping cough. The genes coding for PT have recently been cloned, but attempts to express them in Escherichia coli have been unsuccessful. We therefore explored the possibility of expres...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/0882-4010(87)90016-7
更新日期:1987-12-01 00:00:00
abstract::Vibrio cholerae elaborates zonula occludens toxin (Zot), a protein that increases the permeability of small intestinal mucosa by opening intercellular tight junctions. The zot gene is located, together with the genes encoding CT and Ace enterotoxins, within the genome of V. cholerae filamentous phage CTXsmall ef, Cyri...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1006/mpat.1999.0312
更新日期:1999-12-01 00:00:00
abstract::Staphylococcus aureus extracellular vesicles (EVs) deliver effector molecules to host cells and induce host cell pathology. This study investigated the disruption of S. aureus EVs by thymol along with its inhibitory effects on the cytotoxicity and inflammatory responses induced by EVs derived from two different S. aur...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.103603
更新日期:2019-09-01 00:00:00
abstract::Rice is an important food crop in the world, and rice blast is one of the major fungal diseases that cause large-scale rice yield reduction. This study aimed to investigate the antagonistic activity and its molecular mechanism of bacterial strain JK isolated from seeds of super hybrid rice 'Shenliangyou 5814' (Oryza s...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2020.104422
更新日期:2020-10-01 00:00:00
abstract::This study was designed to screen for SCCmec types and to characterize the attachment site (attB) and universal insertion site (orfX) of SCCmec in a collection of 27 isolates (n = 11) methicillin resistant S. aureus and (n = 16) methicillin susceptible S. aureus isolates in Malaysia. Screening of SCCmec types and char...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2018.07.033
更新日期:2018-10-01 00:00:00
abstract::Today, there is an increasing emphasis on recombinant vaccines to eliminate the side effects of conventional vaccines such as whole-cell bacteria. Query fever is an emerging disease that causes irreparable complications for both humans and domestic animals. The cause of this disease is Coxiella burnetii, a gram-negati...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2018.11.012
更新日期:2019-01-01 00:00:00
abstract::Anthrax lethal factor (LF), a Zn(2+)-dependent metalloprotease, is a key virulence component of anthrax toxin. Here, we used proteolytic assay-based screening to identify novel LF inhibitors from a naturally extracted chemical library. The screening identified four compounds that inhibited in vitro proteolytic activit...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2012.04.004
更新日期:2012-08-01 00:00:00
abstract::Recently, microbial exopolysaccharides (EPSs) have offered very large field for medical applications owing to their bioactive characteristics. This study aimed to obtain antitumor EPS and to optimize its production using different optimization approaches. Eighty EPSs-producing bacteria were obtained from mud samples. ...
journal_title:Microbial pathogenesis
pub_type: 杂志文章
doi:10.1016/j.micpath.2019.103947
更新日期:2020-03-01 00:00:00