Abstract：
:Helicobacter pylori has high global infection rates and can cause other undesirable clinical manifestations such as duodenal ulcer (DU) and gastric cancer (GC). Frequencies of re-infection after therapeutic clearance and rates of DU versus GC vary geographically and differ markedly between developed and developing countries, which suggests additional factors may be involved. The possibility that, in vivo, lactoferrin (Lf) may play a subtle role in modulating micronutrient availability or bacterial internalisation with implications for disease etiology is considered. Lf is an iron binding protein produced in mammals that has antimicrobial and immunomodulatory properties. Some bacteria that regularly colonise mammalian hosts have adapted to living in high Lf environments and we investigated if this included the gastric pathogen H. pylori. We found that H. pylori was able to use iron from fully iron-saturated human Lf (hLf) whereas partially iron-saturated hLf (apo) did not increase H. pylori growth. Instead, apo-hLf increased adherence to and internalisation of bacteria into cultured epithelial cells. By increasing internalisation, we speculate that apo-human lactoferrin may contribute to H. pylori's ability to persistence in the human stomach, an observation that potentially has implications for the risk of H. pylori-associated disease.
journal_name
World J Microbiol Biotechnoljournal_title
World journal of microbiology & biotechnologyauthors
Coray DS,Heinemann JA,Tyrer PC,Keenan JIdoi
10.1007/s11274-011-0984-zsubject
Has Abstractpub_date
2012-05-01 00:00:00pages
1871-80issue
5eissn
0959-3993issn
1573-0972journal_volume
28pub_type
杂志文章abstract：:The use of indigenous bacterial strains is a valuable bioremediation strategy for cleaning the environment from hydrocarbon pollutants. The isolation and selection of hydrocarbon-degrading bacteria is therefore crucial for obtaining the most promising strains for site decontamination. Two different media, a minimal me...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1277-5
更新日期：2013-06-01 00:00:00
abstract：:The volumetric oxygen mass transfer coefficient ([Formula: see text]) is an essential parameter in aerobic high-cell density fermentation where the availability of oxygen to growing microorganisms is a limiting factor. Bioprocess teams looking to scale-up/down between the Eppendorf BioBLU 0.3f single-use vessel and th...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-020-02968-2
更新日期：2021-01-04 00:00:00
abstract：:Brucellae are Gram-negative intracellular bacterial pathogens that infect humans and animals, bringing great economic burdens to developing countries. Live attenuated Brucella vaccines (strain M5-90 or others) are the most efficient means for prevention and control of animal brucellosis. However, these vaccines have s...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-016-2015-6
更新日期：2016-04-01 00:00:00
abstract：:We characterized the culturable, heterotrophic bacterial community in soil collected from a former alpine military site contaminated with petroleum hydrocarbons. The physiologically active eubacterial community, as revealed by fluorescence-in situ-hybridization, accounted for 14.9 % of the total (DAPI-stained) bacteri...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1594-8
更新日期：2014-06-01 00:00:00
abstract：:Heavy-metal chromium [Cr(VI)] is a ubiquitous environmental pollutant. Comparing with chemical reduction, microbiological reduction is considered to be a friendly and cheaper way to decrease the damage caused by chromate. A bacterial strain, CR-07, which is resistant to and capable of reducing chromate was isolated fr...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-011-0962-5
更新日期：2012-04-01 00:00:00
abstract：:Yeasts, widely distributed across the Earth, have successfully colonized cold environments despite their adverse conditions for life. Lower eukaryotes play important ecological roles, contributing to nutrient recycling and organic matter mineralization. Yeasts have developed physiological adaptations to optimize their...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-015-1900-8
更新日期：2015-10-01 00:00:00
abstract：:A total of 360 bacteria, isolated from the rhizospheres of a system of rice intensification (SRI) fields, were characterized for the production of siderophore, fluorescence, indole acetic acid (IAA), hydrocyanic acid (HCN) and solubilization of phosphorus. Of them, seven most promising isolates (SRI-156, -158, -178, -...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-010-0579-0
更新日期：2011-06-01 00:00:00
abstract：:Andrimid, a known non-ribosomal pseudo-peptide antibiotic, was isolated from a psychrotolerant Serratia proteamaculans strain. The antibiotic peptide was produced at low temperature (8 °C) in a 7.5 l BIOFLO 101 bioreactor under batch culture mode. Andrimid activity from S. proteamaculans culture was only detected at 2...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1338-9
更新日期：2013-10-01 00:00:00
abstract：:A novel Lactobacillus panis PM1 isolate was found to be capable of converting glycerol to 1,3-propanediol (1,3-PDO), an increasingly valuable commodity chemical. In this study the effects of various process parameters, including glucose and glycerol concentrations, inoculum size, temperature, aeration, pH, and carbon ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-013-1283-7
更新日期：2013-07-01 00:00:00
abstract：:Busseola fusca (Fuller) (Lepidoptera: Noctuidae) is a stemborer pest that attacks maize (Zea mays) throughout sub-Saharan Africa. Genetically modified maize has been shown to be effective against B. fusca. However, resistance of B. fusca against Bt-maize has developed and spread throughout South Africa. Previous studi...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-016-2066-8
更新日期：2016-07-01 00:00:00
abstract：:Two new products: 9,10-seco-1,3,5(10)-pregnatrien-3,17 a-dihydroxy-9,20-dione and 9,10-seco-1,3,5(10)-pregnatrien-3,17a,20-triol-9-one, have been isolated as 17 α-hydroxyprogesterone transformation products fromNocardia DSM 43298. The structures were established by spectroscopic methods. ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00656517
更新日期：1993-01-01 00:00:00
abstract：:A key constraint in successfully obtaining an effective inoculant is overcoming difficulties in formulating a viable and user-friendly final product and maintaining the microbial cells in a competent state. Co-cultures of rhizobia and PGPR (Plant Growth Promoting Rhizobacteria) are a logical next subject for formulati...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1062-x
更新日期：2012-07-01 00:00:00
abstract：:The activity of sulfate reducing bacteria (SRB) in domestic wastewater treatment plants (WWTP) is often considered as a problem due to H2S formation and potential related odour and corrosion of materials. However, when controlled well, these bacteria can be effectively used in a positive manner for the treatment of wa...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-015-1935-x
更新日期：2015-11-01 00:00:00
abstract：:An α-amylase from a hyper-producing strain of Bacillus (sp. E2) was stable at 70°C for 30 min but was quickly inactivated at higher temperatures. In the presence of 10MM Ca(2+) and starch (20% w/v), however, the enzyme was stable at 90°C for 10 min and after 30 min at 100°C still retained 26% of its initial activity. ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00286380
更新日期：1995-09-01 00:00:00
abstract：:Progesterone was completely hydroxylated, principally to 11β,14α dihydroxyprogesterone by Cunninghamella blakesleeana NCIM 687 in 48h. ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00367121
更新日期：1995-05-01 00:00:00
abstract：:The abundance of culturable heterotropic bacteria studied on and according to depth levels and seasons in the Gulf of Antalya. Environmental factors were compared regarding culturable heterotrophic bacteria abundance and diversities of bacteria. During the study period (between August 2009 and April 2010, seasonally i...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-015-1810-9
更新日期：2015-04-01 00:00:00
abstract：:The topics of Construction Biotechnology are the development of construction biomaterials and construction biotechnologies for soil biocementation, biogrouting, biodesaturation, bioaggregation and biocoating. There are known different biochemical types of these biotechnologies. The most popular construction biotechnol...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-019-2598-9
更新日期：2019-01-21 00:00:00
abstract：:Tomato (Lycopersicon esculentum) is important widely grown vegetable in India and its productivity is affected by bacterial wilt disease infection caused by Ralstonia solanacearum. To prevent this disease infection a study was conducted to isolate and screen effective plant growth promoting rhizobacteria (PGPR) antago...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-011-0975-0
更新日期：2012-04-01 00:00:00
abstract：:In a search for microorganisms producing extracellular protease with unhairing activity, Bacillus subtilis IIQDB32 was isolated. Protease formation was significantly stimulated by glucose, tryptone, yeast extract, Ca(2+) and Mn(2+), but was repressed by ammonia and Fe(2+). ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00327730
更新日期：1996-11-01 00:00:00
abstract：:Hyperthermophiles are characterized by a temperature optimum for growth between 80 and 110°C. They are considered to represent the most ancient phenotype of living organisms and thus their metabolic design might reflect the situation at an early stage of evolution. Their modes of metabolism are diverse and include che...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00339135
更新日期：1995-01-01 00:00:00
abstract：:Paclitaxel is a highly toxic anticancer agent which is used in a wide range against ovarian, breast, lung, and prostate cancers. Paclitaxel is manufactured recently in the north of Iran which may lead to the introduction of the drug into the environment via pharmaceutical wastewater. To our knowledge, Paclitaxel degra...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-016-2087-3
更新日期：2016-08-01 00:00:00
abstract：:We describe a novel method for the real-time estimation of the accretion of blomass during the solid-substrate tempe fermentation of soy beans, lupins and quinoa by Rhizopus oligosporus Salto. The method is based on measurements of the dielectric permittivity at radio-frequencies, using a four-terminal instrument (the...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00328998
更新日期：1991-03-01 00:00:00
abstract：:Endophytes are recognised as potential sources of novel secondary metabolites, including enzymes and drugs, with applications in medicine, agriculture and industry. There is a growing need for new enzymes, including proteases, for use in industry that can function under a variety of conditions. In this study, three fu...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-014-1598-z
更新日期：2014-06-01 00:00:00
abstract：:Experiments were conducted to evaluate the efficacy of calliterpenone, a natural plant growth promoter from a shrub Callicarpa macrophylla Vahl., in enhancing the growth and yield promoting effects of plant growth promoting rhizobacteria (PGPRs), in menthol mint (Mentha arvensis L).This study is based on our previous ...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1238-4
更新日期：2013-05-01 00:00:00
abstract：:Strain improvement by genetic manipulation or optimization of fermentation conditions for overproduction of vitamin B(12) has a drawback due to feed back inhibition. To resist the feed back inhibition by analogues of vitamin B(12) in Propionibacterium freudenrechii subsps. shermanii (OLP-5), we have tested with microb...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1011-8
更新日期：2012-05-01 00:00:00
abstract：:Polyhydroxyalkanoates (PHAs) are a class of high-molecular-weight polyesters made from hydroxy fatty acid monomers. PHAs produced by microorganisms have diverse structures, variable physical properties, and good biodegradability. They exhibit similar physical properties to petroleum-based plastics but are much more en...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章,评审
doi：10.1007/s11274-020-02986-0
更新日期：2021-01-04 00:00:00
abstract：:5-Enopyruvylshikimate-3-phosphate synthase (EPSP synthase) is an important enzyme in the shikimate pathway mediating the biosynthesis of aromatic compounds in plants and microorganisms. A novel class II EPSP synthase AroA S. fredii from Sinorhizobium fredii NGR234 was overexpressed in Escherichia coli BL21. It was pur...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-014-1724-y
更新日期：2014-11-01 00:00:00
abstract：:An alternative procedure to obtain the parameters of Monod's growth model in batch culture is presented. It is based on the integral kinetic analysis methodology, employs a one-dimensional Golden Section search optimization method and is implemented on a spread-sheet programme. The procedure is discussed in detail and...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF01198762
更新日期：1992-07-01 00:00:00
abstract：:The extracellular and surface polysaccharides produced by Rhizobium species constitute a composite macromolecular interface between the bacterial cell and its environment. Several of these polysaccharides are involved in the complex series of interactions leading to the establishment of an effective Rhizobium-legume s...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/BF00364677
更新日期：1996-03-01 00:00:00
abstract：:A xylanase gene, designated Svixyn10A, was cloned from actinomycetes Saccharomonospora viridis and the gene product was characterized. Gene Svixyn10A contains 1,374 bp and encodes a polypeptide of 457 amino acids composed of a glycoside hydrolase family 10 catalytic domain with a putative signal peptide, a short Gly-r...
journal_title：World journal of microbiology & biotechnology
pub_type： 杂志文章
doi：10.1007/s11274-012-1085-3
更新日期：2012-08-01 00:00:00
