Results 61 to 70 of about 577,400 (301)

Acquisition of Daptomycin Resistance by Enterococcus faecium Confers Collateral Sensitivity to Glycopeptides

open access: yesFrontiers in Microbiology, 2022
Daptomycin is a last-line antibiotic used in the treatment of multidrug-resistant Enterococcus faecium infections. Alarmingly, daptomycin-resistant E. faecium isolates have emerged.
Weiliang Zeng   +10 more
doaj   +1 more source

Upon accounting for the impact of isoenzyme loss, gene deletion costs anticorrelate with their evolutionary rates [PDF]

open access: yes, 2017
System-level metabolic network models enable the computation of growth and metabolic phenotypes from an organism’s genome. In particular, flux balance approaches have been used to estimate the contribution of individual metabolic genes to organismal ...
Jacobs, Christopher   +3 more
core   +4 more sources

Innovation rather than improvement: a solvable high-dimensional model highlights the limitations of scalar fitness

open access: yes, 2017
Much of our understanding of ecological and evolutionary mechanisms derives from analysis of low-dimensional models: with few interacting species, or few axes defining "fitness".
Monasson, Remi, Tikhonov, Mikhail
core   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim   +8 more
wiley   +1 more source

Variability in competitive fitness among environmental and clinical azole-resistant Aspergillus fumigatus isolates

open access: yesmBio
Azoles are the primary antifungal drugs used to treat infections caused by Aspergillus fumigatus. However, the emergence of azole resistance in A. fumigatus has become a global health concern despite the low proportion of resistant isolates in natural ...
Shu Chen   +8 more
doaj   +1 more source

Fitness Cost of Antiretroviral Drug Resistance Mutations on the pol Gene during Analytical Antiretroviral Treatment Interruption among Individuals Experiencing Virological Failure

open access: yesPathogens, 2021
HIV cure studies require patients to enter an analytical treatment interruption (ATI). Here, we describe previously unanalyzed data that sheds light on ATI dynamics in PLHIV (People Living with HIV).
James R. Hunter   +7 more
doaj   +1 more source

Cognitive fitness of cost-efficient brain functional networks [PDF]

open access: yesProceedings of the National Academy of Sciences, 2009
The human brain's capacity for cognitive function is thought to depend on coordinated activity in sparsely connected, complex networks organized over many scales of space and time. Recent work has demonstrated that human brain networks constructed from neuroimaging data have economical small-world properties that confer high efficiency of information ...
Danielle S, Bassett   +5 more
openaire   +2 more sources

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Evolutionary trajectory of bacterial resistance to antibiotics and antimicrobial peptides in Escherichia coli

open access: yesmSystems
The global crisis of antimicrobial resistance poses a major threat to human health, underscoring the urgency of developing new antibacterial strategies.
Feiyu Yu   +4 more
doaj   +1 more source

The fitness costs of developmental canalization and plasticity [PDF]

open access: yesJournal of Evolutionary Biology, 2009
AbstractOrganisms are capable of an astonishing repertoire of phenotypic responses to the environment, and these often define important adaptive solutions to heterogeneous and unpredictable conditions. The terms ‘phenotypic plasticity’ and ‘canalization’ indicate whether environmental variation has a large or small effect on the phenotype.
Van Buskirk, J, Steiner, U K
openaire   +3 more sources

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