Results 31 to 40 of about 761,508 (293)

Efficiency of chemical versus mechanical disruption methods of DNA extraction for the identification of oral Gram-positive and Gram-negative bacteria

Journal of International Medical Research, 2020
Objective Clinical diagnostics often requires the detection of multiple bacterial species in limited clinical samples with a single DNA extraction method.
Xiaolan Li, Caroline J. Bosch-Tijhof, Xi Wei, Johannes J. de Soet, Wim Crielaard, Cor van Loveren, Dong Mei Deng   +6 more
doaj   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

FEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz, Milagros Siebeck Caturelli, Lina S. Lehmann, Florian Kurth, Alexander G. Maier, Kai Matuschewski   +5 more
wiley   +1 more source

Genome-wide identification of essential genes in the invasive Streptococcus anginosus strain

Scientific Reports
Streptococcus anginosus, part of the Streptococcus anginosus group (SAG), is a human commensal increasingly recognized as an opportunistic pathogen responsible for abscesses formation and infections, also invasive ones.
Aleksandra Kuryłek, Jan Gawor, Karolina Żuchniewicz, Robert Gromadka, Izabela Kern-Zdanowicz   +4 more
doaj   +1 more source

Maturation of Pseudo-Nucleus Compartment in P. aeruginosa, Infected with Giant phiKZ Phage

Viruses, 2020
The giant phiKZ phage infection induces the appearance of a pseudo-nucleus inside the bacterial cytoplasm. Here, we used RT-PCR, fluorescent in situ hybridization (FISH), electron tomography, and analytical electron microscopy to study the morphology of ...
Yana A. Danilova, Viktoriia V. Belousova, Andrey V. Moiseenko, Innokentii E. Vishnyakov, Maria V. Yakunina, Olga S. Sokolova   +5 more
doaj   +1 more source

Control of bacterial DNA supercoiling [PDF]

Molecular Microbiology, 1992
SummaryTwo DNA topoisomerases control the level of negative supercoiling in bacterial cells. DNA gyrase introduces supercoils, and DNA topoisomerase I prevents super‐coiling from reaching unacceptably high levels. Perturbations of supercoiling are corrected by the substrate preferences of these topoisomerases with respect to DNA topology and by changes
openaire   +2 more sources

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

FEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer, Matheus Felipe Santos, Maurício Mazzine Filho, Gabriela Oliveira Castro, Agustín Hernández, Manoel Aparecido Peres, Alejandro Miguel Katzin, Marcell Crispim   +7 more
wiley   +1 more source

Indirect DNA extraction method suitable for acidic soil with high clay content

MethodsX, 2018
DNA extraction is an essential procedure when investigating microbial communities in environmental samples by sequencing technologies. High clay soils can be problematic as DNA adsorbs to the clay particles and can thereby be preserved from lysed, non ...
Eva Högfors-Rönnholm, Stephan Christel, Sten Engblom, Mark Dopson   +3 more
doaj   +1 more source

Bacterial DNA amplifies neutrophilic inflammation in IL-17-exposed airways

ERJ Open Research, 2023
Background Neutrophilic asthma (NA) is associated with increased airway interleukin (IL)-17 and abnormal bacterial community such as dominance of nontypeable Haemophilus influenzae (NTHi), particularly during asthma exacerbations.
Nastaran Mues, Richard J. Martin, Rafeul Alam, Niccolette Schaunaman, Kris Genelyn Dimasuay, Christena Kolakowski, Clyde J. Wright, Lijun Zheng, Hong Wei Chu   +8 more
doaj   +1 more source

Bacterial DNA topology and infectious disease [PDF]

Nucleic Acids Research, 2008
The gram-negative bacterium Escherichia coli and its close relative Salmonella enterica have made important contributions historically to our understanding of how bacteria control DNA supercoiling and of how supercoiling influences gene expression and vice versa.
Dorman, Charles J., Corcoran, Colin P.
openaire   +4 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source