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PubMed Journals Articles About "Insights Into Parasitic Yeast Species Could Lead Strategies" RSS

15:46 EDT 16th June 2019 | BioPortfolio

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Showing "Insights into parasitic yeast species could lead strategies" PubMed Articles 1–25 of 25,000+

In vitro antileishmanial activity of leaf and stem extracts of seven Brazilian plant species.

Leishmaniasis is a parasitic disease that affects people all over the world. The number of cases of leishmaniasis is increasing and the drugs used for its treatment are toxic and not always effective. The recognition of the global nature of this disease and its direct or indirect effects on health economics and actions focuses attention on the development of new therapeutic options. In Brazil, this parasitic disease is endemic in many regions. The plants used by the population against leishmaniasis can be g...


New insights into IgG4-related disease: emerging new CD4+ T-cell subsets.

New insights into IgG4-related disease (IgG4-RD) have recently been obtained. A better understanding of the mechanisms underlying this disease is important for identification of therapeutic targets, which will lead to the development of specific strategies for treatment.

SWOT analysis of informatization of parasitic disease prevention and control.

The study analyzes the strengths, weaknesses, opportunities and threats (SWOT) of the informatization of parasitic disease prevention and control in China, and puts forward the development strategies, in order to provide the reference for accelerating the informatization of parasitic disease prevention and control.


Laboratory Screening Protocol to Identify Novel Oleaginous Yeasts.

Oleaginous microbes, which contain over 20% intracellular lipid, predominantly triacylglycerols (TG), by dry weight, have been discovered to have high oil content by many different protocols, ranging from simple staining to more complex chromatographic methods. In our laboratory, a methodical process was implemented to identify high oil yeasts, designed to minimize labor while optimizing success in identifying high oil strains among thousands of candidates. First, criteria were developed to select candidate...

Characterization of a yeast interfering RNA larvicide with a target site conserved in the synaptotagmin gene of multiple disease vector mosquitoes.

New mosquito control strategies are vitally needed to address established and emerging arthropod-borne infectious diseases. Here we describe the characterization of a yeast interfering RNA larvicide that was developed through the genetic engineering of Saccharomyces cerevisiae (baker's yeast) to express a short hairpin RNA targeting the Aedes aegypti synaptotagmin (Aae syt) gene. The larvicide effectively silences the Aae syt gene, causes defects at the larval neural synapse, and induces high rates of A. ae...

Plant-parasitic nematode effectors - insights into their diversity and new tools for their identification.

Plant-parasitic nematodes (PPNs) are a large group of obligate biotrophic pathogens that secrete molecules, called effectors, involved in parasitism. The majority of work in molecular phytonematology has focused on the root-knot and cyst nematodes, which are both sedentary endoparasitic nematodes. More recently, inexpensive sequencing technology has facilitated effector searches in PPNs with different parasitic lifestyles. Work in different PPN species suggests that effectors are diverse, and selection pres...

Parasitic plasmid-host dynamics and host competition in flowing habitats.

Competition and coexistence were examined for two bacterial species, each potentially carrying a fitness-reducing, parasitic plasmid that was vertically transmitted with possible loss through segregation. Here, the fitness reduction of hosts was due to a toxin produced by plasmid-bearing cells and inhibiting plasmid-free cells. These populations were placed in a flow reactor habitat representing an idealized mammal gut. It was numerically shown that parasitic plasmids can mediate coexistence of competing ho...

Anti-parasitic activity of polyether ionophores.

Despite some progress in recent years, the fight against parasitic diseases still remains a great challenge. Parasitic diseases affect primarily (but not exclusively) the poorest people living in underdeveloped regions of the world. The distribution of parasitoses are linked to tropical and subtropical climate conditions, to population growth and to impoverishment. If not treated, parasitic diseases may lead to serious health problems, and even death. Particularly vulnerable groups include infants and young...

Wickerhamomyces menglaensis f.a., sp. nov., a yeast species isolated from rotten wood.

Five strains, NUNU 16637, NYNU 16645, NYNU 1673, NYNU 1680 and NYNU 1689, of a novel ascomycetous yeast were isolated from the Xishuangbanna tropical rainforest, Yunnan Province, PR China. The five strains shared identical sequences in both of the D1/D2 domains of the large subunit rRNA gene and the internal transcribed spacer (ITS) regions. Sequence analysis showed that they represent undescribed yeast species belonging to the genus Wickerhamomyces. They differed from their closest known species, Wickerham...

Unequivocal identification of an underestimated opportunistic yeast species, Cyberlindnera fabianii, and its close relatives using a dual-function PCR and literature review of published cases.

Although Cyberlindnera fabinaii is a rare opportunist yeast species, its ability to cause septicemia, produce biofilm, and rapid acquisition of resistance to fluconazole and voriconazole, reinforced the urge for its identification from its closely related species. Widely used biochemical assays mainly identify Cyberlindnera fabinaii as Cyberlindnera jadinii and Wickerhamomyces anomalus, resulting in underestimation of this yeast in clinical settings. Moreover, the urge for a reliable molecular means of iden...

Potassium uptake systems of Candida krusei.

Candida krusei is a pathogenic yeast species that is phylogenetically outside both of the well-studied yeast groups, WGD and CUG. Like all other yeast species, it needs to accumulate high amounts of potassium cations, which are needed for proliferation and many other cell functions. A search in the sequenced genomes of 9 C. krusei strains revealed the existence of twohighly conserved genes encoding putative potassium uptake systems. Both of them belong to the TRK family, whose members have been found in all...

A multi-functional minimally-disruptive portable electrochemical system based on yeast/CoO/Au/SPEs for blood lead (II) measurement.

A minimally-disruptive portable electrochemical system is constructed by combining a hand-held syringe as reservoir with disposable screen-printed electrodes (SPEs) modified with a simple and efficient yeast/CoO/Au material for lead determination by a square-wave voltammetry (SWV) method. Not only can it preserve the operation and advantages of the conventional electrochemical procedure, but it also integrates sampling, filtering and analysis to make the determination of lead convenient and effective at hig...

What do we know about lead contamination in wild vultures and condors? A review of decades of research.

Vultures and condors (hereafter vultures) make up one the most threatened avian guilds in the world due to a variety of human-mediated impacts and disturbances. In fact, 70% of vulture species are currently suffering impacted by significant conservation threats, with lead contamination being particularly important. Unfortunately, lead contamination in vulture species remains poorly studied in many regions of the world. We reviewed the existing scientific knowledge about this threat to vultures. We found 62 ...

Preparation and Use of a Yeast shRNA Delivery System for Gene Silencing in Mosquito Larvae.

The mosquito genome projects facilitated research in new facets of mosquito biology, including functional genetic studies in the dengue and Zika virus vector Aedes aegypti and the primary African malaria vector Anopheles gambiae. RNA interference (RNAi) has facilitated gene silencing experiments in both of these disease vector mosquito species and could one day be applied as a new method of vector control. Here, we describe a procedure for the genetic engineering of Saccharomyces cerevisiae (baker's yeast) ...

Delays in Fitness Adjustment Can Lead to Coexistence of Hierarchically Interacting Species.

Organisms that exploit different environments may experience a stochastic delay in adjusting their fitness when they switch habitats. We study two such organisms whose fitness is determined by the species composition of the local environment, as they interact through a public good. We show that a delay in the fitness adjustment can lead to the coexistence of the two species in a metapopulation, although the faster-growing species always wins in well-mixed competition experiments. Coexistence is favored over...

New insights on yeast and filamentous fungus adhesion in a natural co-immobilization system: proposed advances and applications in wine industry.

Fungi possess extraordinary strength in attachment to biotic and abiotic surfaces. This review focuses on adhesion mechanisms of yeast and filamentous fungi and the proposed combination of the adhesive forces of both organisms in an immobilization system called yeast biocapsules, whereby Saccharomyces cerevisiae cells are attached to the hyphae of Penicillium chrysogenum. The natural adherent properties of each organism, one multicellular and another unicellular, allow yeast to be fixated securely on the fi...

Isavuconazole MICs distribution of 29 yeast species responsible for invasive infections (2015-2017).

Isavuconazole is a recent extended-spectrum triazole with activity against yeasts. However, few data are available on the in vitro activity on rare yeast species. We report minimum inhibitory concentration (MIC) distribution of isavuconazole compared to fluconazole for a large collection of common or rare yeasts.

Vishniacozyma ellesmerensis sp. nov., a psychrophilic yeast isolated from a retreating glacier in the Canadian High Arctic.

Two strains of a psychrophilic basidiomycetous yeast species belonging to the genus Vishniacozyma were isolated from sediments and soil at the front of a retreating glacier on northern Ellesmere Island in the Canadian Arctic. Analysis of the large subunit D1/D2 region and the internal transcribed spacer (ITS) regions of the rDNA indicated that these strains represented a novel species. The closest relatives of the novel species were Vishniacozyma globispora and V. dimennae, which exhibited sequence similari...

Small RNA warfare: exploring origins and function of trans-species microRNAs from the parasitic plant Cuscuta.

Parasitic plants make direct contact with their host's vasculature. In parasitism by Cuscuta, RNA and other macromolecules regularly move between host and parasite. Recently, trans-species microRNA from Cuscuta have been shown to functionally target host genes which have essential roles in host defense. Known pathways for the evolution of microRNAs, and the prevalence of horizontal gene transfer events in the Cuscuta lineage, hint that trans-species microRNAs could originate from captured host genes. It is ...

Molecular identification of yeast, lactic and acetic acid bacteria species during spoilage of tchapalo, a traditional sorghum beer from Côte d'Ivoire.

Yeasts, lactic and acetic acid bacteria are responsible of microbial spoilage of alcoholic beverages. However species involved in deterioration of sorghum beer produced in Côte d'Ivoire has not been investigated. This study was carried out to identify species of yeast, LAB and AAB during spoilage of tchapalo in order to define the best strategy for beer preservative. Thus, a total of 210 yeasts, LAB and AAB were isolated from samples of tchapalo stored at ambient temperature and at 4 °C for 3 days. Base...

Fermentative capabilities of native yeast strains grown on juices from different Agave species used for tequila and mezcal production.

The Asparagaceae family is endemic from America, being the Agave genus the most important. The Agave species possess economic relevance and are use as raw material to produce several distilled alcoholic beverages, as bacanora, tequila, and mezcal. The fermentation process has been carry out either spontaneously or by adding a selected yeast strain. The latter is generally responsible for the production of ethanol and volatile compounds. This study comprised five Agave species (A. angustifolia, A. cupreata, ...

Global Genetic Networks and the Genotype-to-Phenotype Relationship.

Genetic interactions identify combinations of genetic variants that impinge on phenotype. With whole-genome sequence information available for thousands of individuals within a species, a major outstanding issue concerns the interpretation of allelic combinations of genes underlying inherited traits. In this Review, we discuss how large-scale analyses in model systems have illuminated the general principles and phenotypic impact of genetic interactions. We focus on studies in budding yeast, including the ma...

The bioinformatics of the yeast genome - a historical perspective.

From 1989 to 1997 the Yeast Genome was sequenced by a worldwide international consortium initiated and conducted by André Goffeau (1935-2018). The article describes the pioneering collaboration of yeast scientists from a bioinformatics perspective. Indeed, the yeast genome has turned bioinformatics from an exotic hobby of few nerds into a discipline indispensable for answering biological questions using computational methods.

Potassium iodide and miltefosine inhibit biofilms of Sporothrix schenckii species complex in yeast and filamentous forms.

This study aimed to evaluate the yeast biofilm growth kinetics and ultrastructure of Sporothrix schenckii complex and assess their mature biofilm susceptibility in filamentous and yeast forms to potassium iodide (KI) and miltefosine (MIL). Yeast biofilms were evaluated by crystal violet staining, XTT reduction assay and microscopic techniques. Susceptibility of planktonic and sessile cells was analyzed by broth microdilution. S. schenckii complex in yeast form produced biofilms, with an optimum maturation a...

Co-culturing of oleaginous microalgae and yeast: paradigm shift towards enhanced lipid productivity.

Oleaginous microalgae and yeast are the two major propitious factories which are sustainable sources for biodiesel production, as they can accumulate high quantities of lipids inside their bodies. To date, various microalgal and yeast species have been exploited singly for biodiesel production. However, despite the ongoing efforts, their low lipid productivity and the high cost of cultivation are still the major bottlenecks hindering their large-scale deployment. Co-culturing of microalgae and yeast has the...


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