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eLife


A single genetic change in gut bacteria alters host metabolism

A study published in eLife found that deleting a single gene from a particular strain of gut bacteria causes changes in metabolism and reduced weight gain in mice. The researchers discovered that this genetic change altered the levels of certain bile acids, leading to a preference for metabolizing fats rather than carbohydrates.

SourceeLife·DateJul 17, 2018

Nitric oxide tells roundworms to avoid bad bacteria

A new study published in eLife reveals that roundworms, specifically Caenorhabditis elegans, use nitric oxide gas as a sensory cue to avoid the pathogenic bacteria Pseudomonas aeruginosa. The protein thioredoxin plays a crucial role in regulating the temporal dynamics of the worm's response to the gas.

SourceeLife·DateJul 17, 2018

Timings and behaviour influence worm's response to force

Researchers discovered that worms' behavior at the time of experiencing stimuli influenced how their brains interpreted information, leading to a more sophisticated understanding of mechanosensory circuitry. The study paves the way for further investigations into how simple brains interpret sensory signals and turn them into actions.

SourceeLife·DateJun 26, 2018

Knee joint signals bones to grow

Researchers discovered a communication system between the knee joint and developing bones in mice, which controls bone growth during early development and after injury. The study suggests that bone growth is controlled not only from within the bone itself but also by neighboring cells situated in nearby joints.

SourceeLife·DateJul 25, 2017

Metabolic markers accurately diagnose typhoid fever

A metabolomics approach has identified a unique metabolic 'signature' that can accurately distinguish typhoid from other tropical diseases, providing a new approach for typhoid diagnostics. The study found excellent predictive power in distinguishing culture-positive typhoid patients from those with other diseases.

SourceeLife·DateMay 9, 2017

Fruit flies halt reproduction during infection

Researchers found that fruit fly infections trigger a reduction in egg-laying activity and affect the octopaminergic signalling pathway. The study reveals a protective mechanism allowing fruit flies to regulate their offspring's impact on the environment during bacterial infection.

SourceeLife·DateMar 7, 2017

Scientists reveal how the brain maintains useful memories

Scientists have identified specific groups of neurons in the medial prefrontal cortex that develop codes to store relevant information from multiple experiences. Over time, these neurons lose less important details unique to each experience. The findings provide new insight into how the brain collects and stores useful knowledge.

SourceeLife·DateFeb 14, 2017

Ants communicate by mouth-to-mouth fluid exchange

Researchers discovered that ants share proteins and hormones through trophallaxis, allowing them to collectively influence colony growth and development. This process enables ants to cast 'quantitative ballots' for their colony's future by administering different amounts of growth-promoting components to their larvae.

SourceeLife·DateNov 29, 2016

Protein and salt drive post-meal sleepiness

Scientists have found that protein and salt in food can drive post-meal sleepiness in fruit flies, leading to longer naps. The study used a system to measure feeding and sleeping behaviors of individual flies, revealing that larger meals result in longer sleep periods.

SourceeLife·DateNov 22, 2016

Scientists 'plug in' to circuitry behind sex in male fruit flies

Researchers have identified a small neural circuit in male fruit flies that controls the complex mating ritual, with specific groups of cells controlling distinct steps. The findings suggest a mechanism for separating sex from reproductive function and provide insight into universal principles of nervous system coordination.

SourceeLife·DateNov 15, 2016

Overlooked plants defy drought

Scientists have discovered that certain plants resistant to a hormone called abscisic acid (ABA) can grow better than normal neighbors during droughts. ABA-resistant varieties may hold the key to breeding 'stay green' traits in crops, which could help them retain their leaves and continue to produce food and other essential resources.

SourceeLife·DateOct 4, 2016

How sleep deprivation harms memory

Researchers discover that five hours of sleep deprivation leads to a loss of connectivity between neurons in the hippocampus, a region associated with learning and memory. However, blocking the protein cofilin and allowing recovery sleep restores neuronal connections and improves memory processes.

SourceeLife·DateAug 23, 2016