A study published in eLife found no significant difference in the rate of mutations leading to drug resistance between HIV-positive and negative TB patients. HIV co-infection accelerates the development of active TB but does not increase the evolution of multidrug-resistant strains.
Researchers found that bats recognize locations by remembering unique echo signatures, allowing them to form cognitive maps of their environment. The study suggests that prominent landmarks play a key role in template-based place recognition.
Scientists at Karolinska Institutet have discovered a new brainstem model that shows how the brain controls breathing in response to changes in oxygen and carbon dioxide levels. The study found that when exposed to decreased oxygen or increased carbon dioxide, the brain releases PGE2 to regulate breathing.
Two studies in mice reveal that rescuing MeCP2 activity in certain neurons can improve symptoms of Rett syndrome, with different types of neurons playing distinct roles. Researchers are now exploring drugs to improve inhibitory and excitatory neuron balance, offering new hope for potential therapies.
Researchers have uncovered signatures of historical DNA mixing events in sub-Saharan Africa, shaping the continent's recent genetic history. The study provides insights into admixture events that may contribute to non-communicable and infectious diseases like malaria.
A new plant engineering method has been developed to produce artemisinic acid, the molecule from which artemisinin is derived, in high yields. This technique involves transferring the metabolic pathway of Artemisia annua into tobacco plants, resulting in unprecedented levels of artemisinic acid production.
A type of flatworm, Schmidtea mediterranea, can provide a new model for studying rare metabolic disorders like porphyrias. Prolonged exposure to sunlight triggers the production of light-activated molecules in its skin pigment cells, leading to depigmentation and potentially aiding in the development of new treatments.
Researchers discovered a new factor in seizure escalation: estrogen synthesis in the brain. Aromatase inhibitors showed promise in suppressing seizures without negative side effects, promising a novel therapeutic approach.
A recent study published in eLife reveals that novel swine flu viruses have emerged, driven by the frequent introduction of human viruses to pigs. The analysis of nearly 600 flu viruses from multiple continents shows a high level of antigenic diversity, posing a significant risk to human health.
Researchers discovered a superfast wing muscle in tropical birds, which can move at speeds of over 60 Hz, faster than any animal with a backbone. This adaptation allows birds to perform extravagant courtship displays without sacrificing flying ability.
Researchers discovered that schistosome stem cells are responsible for constantly renewing the worm's outer layer of skin, a unique tissue called the tegument. This process allows the flatworm to survive in the bloodstream for decades, evading its host's immune defenses.
Researchers used whole-brain imaging to study larval zebrafish behavior in plain surroundings. They found alternating left and right turn states in the brain, leading to spontaneous chaining of turns that deviate from random walks.
Research reveals that fruit flies' adult and larval nervous systems share similar structures and molecular signatures, contradicting the traditional view of metamorphosis as two separate stages. The study uses lineage tracing to identify neuroblast lineages and discover unique neuroblasts controlling leg motor neurons.
Researchers uncovered a group of retroviruses called ERV-Fc that affected 28 out of 50 modern mammal ancestors, spreading across every continent except Antarctica and Australia. The study also reveals patterns of evolutionary change and gene exchange between these viruses and other pathogens.
A new robotically driven experimentation system has been developed to determine the effects of a large number of drugs on many proteins, reducing the number of necessary experiments by 70%. The model uses an active learning approach to identify patterns and make predictions about unmeasured experiments with high accuracy.
Researchers created a combined MRI and ultramicroscopy toolkit to study vessel growth in glioma models, providing better understanding of underlying mechanisms and potential novel targets for future drug development. The technique helped assess the effects of existing anti-vascular endothelial growth factor treatments on tumour growth.
Researchers demonstrate Meselson effect for first time in any organism at genome-wide level, studying a parasite called T.b. gambiense. The study reveals that the parasite's inability to recombine with each other prevents genes from being exchanged between strains.
A novel spectral confocal microscopy technique enables the visualization of silver- and gold-labeled neurons in three dimensions, providing high-resolution images that can be archived for decades. This method retains image quality even with repeated light exposure, making it ideal for studying neurological disorders and cancer.
Two species of dengue and chikungunya-carrying mosquitoes are spreading rapidly across the globe, with new areas identified as suitable for their survival. The expansion threatens communities worldwide, particularly in Africa where records are sparse.
Scientists discovered that infant brain development occurs years faster than previously thought, with face perception abilities emerging as early as four months. The study used electroencephalography to track brain activity in response to facial images, revealing a unique right-hemisphere processing of faces.
Researchers from Oregon State University found zebrafish produce a chemical called gadusol to protect against UV radiation. Gadusol's successful production in yeast opens the door to large-scale commercialization.
Scientists have discovered a 100-million-year-old insect fossil that shows an adult female insect caring for its young, a behavior previously unknown to exist during the Mesozoic era. This discovery pushes back the earliest direct evidence of insect brood care by more than 50 million years.
Researchers at the University of Michigan have successfully grown a 3D mini lung from embryonic stem cells, replicating the organization of human airways. The study demonstrates a novel method for morphogenesis in a dish, enabling the creation of lung tissue with cell types found in the lungs.
Researchers found that airport screening often fails to detect half or more infected travelers, but can be improved by customizing to specific pathogens. Honest reporting by passengers is also crucial for effective detection and tracing.
Researchers analyzed soils from five continents to discover potential antibiotic and anticancer drugs. They identified unique gene clusters in these samples that could lead to new medicines, including ones used to combat tuberculosis and cancer.
Researchers discovered that knocking down a single gene can prevent stress-induced female infertility and miscarriage in rats. The study found that this genetic silencing restored reproductive success to levels comparable to non-stress controls.
A team of scientists found that female mice are more resistant to respiratory infections due to the presence of an enzyme called nitric oxide synthase 3, which is triggered by estrogen. The researchers hope to develop drugs targeting this enzyme to improve resistance to common lung infections.
Scientists identify tannic acid as a potential treatment for bacterial lung infections in cystic fibrosis patients, counteracting the harmful effects of the Staphylococcus aureus enzyme SMaseC. The discovery suggests that tannic acid may improve therapeutic outcomes for CF patients.
The eLife journal has launched its new website, offering a fresh approach to presenting scientific content. The site features clean and distraction-free design, allowing authors to showcase their research in full and readers to delve deeply into the work.
eLife has published its first four research articles, describing groundbreaking discoveries in life science and biomedicine. These include a hormone that increases mouse lifespan and a critical signaling molecule involved in the evolution of multicellularity.