A new class of anti-obesity drugs that block cannabinoid receptors may disrupt neural development in children. The study suggests caution when using these compounds in juvenile mice and potentially humans.
A new study found that ghrelin increases the response to food pictures in brain regions involved in reward and motivation, suggesting a link between pleasure signals and metabolic drives. The findings may have implications for treating obesity and could inform policies aimed at reducing fast food consumption.
Researchers found that transplanted subcutaneous fat into mice visceral cavity showed improved blood sugar and insulin levels, while visceral fat had detrimental effects. The findings suggest fat cells in different depots have intrinsically different properties.
Researchers found evidence that fungi can 'lock' depleted uranium into a mineral form that may be less likely to find its way into plants, animals, or the water supply. Fungal-based approaches should not be neglected in remediation attempts for metal-polluted soils.
Researchers discover that myoepithelial cells play a critical role in regulating breast tumor progression and can act as 'gatekeepers' for the transition from in situ to invasive carcinoma. Understanding their pathways may open new avenues for cancer therapy and prevention.
Researchers found that EGFR stabilizes sodium/glucose transporter 1 to maintain adequate glucose levels in cancer cells, preventing autophagic cell death. This study suggests that inhibiting both EGFR-mediated SGLT1 stabilization and EGFR kinase activity may be necessary for eradicating epithelial tumors.
Researchers mapped brain regions for social standing and money rewards, finding that both engage the same reward circuitry. This discovery sheds light on complex social behaviors and could lead to better understanding of neurological disorders such as Parkinson's disease.
Researchers found that mice can sense oxygen levels in the environment and stimulate kidney production of erythropoietin when oxygen concentrations drop. The study suggests that the skin plays a major role in sensing oxygen and could lead to new treatments for anemia and diseases affecting red blood cell counts.
A study in flies found that despite sex-based behaviors, their brains have a largely unisex structure, suggesting key switches control the difference between male and female behavior. Researchers discovered that artificial activation of male-specific singing neurons triggered female flies to exhibit male-like behavior.
Researchers found a shared genetic expression pattern between embryonic stem cells and human cancer cells, which may have significant implications for cancer therapeutics. A gene module map was created to relate transcriptional programs in different cell types.
Researchers identified how toxic protein plaque accumulates in the brain of people with Alzheimer's disease. The study found that endocytosis plays a crucial role in transporting amyloid precursor protein into neurons, leading to A
Researchers discovered a gene in flies whose activity is controlled by protein and sugar intake, suggesting a second mechanism for glucose release under specific dietary conditions. The findings also reveal potential links between diet, insulin signaling, and life span, particularly with high-protein diets.
Researchers have identified KLF4 as a key player in the early stages of fat formation, connecting the dots between molecular processes that lead to adipogenesis. By understanding how KLF4 influences C/EBPß activity and drives fat production, scientists may be able to intervene and alter fat development.
Researchers have validated genetic aberrations and identified new targets for GBM treatment. A novel regulatory circuit involving INK4 family genes, p18INK4C and p16INK4A, constrains inappropriate glial cell proliferation and enhances tumorigenicity.
Scientists have found that migratory moths use various strategies to control their flight direction and speed, including selecting favorable wind directions and compensating for wind drift. These findings provide the first conclusive evidence for a compass mechanism in nocturnal insect migration.
A recent study found that the human breast tumor microenvironment can prime cells for metastasis, particularly to the lungs. Researchers discovered a correlation between TGFß exposure and increased risk of lung cancer in ER- tumors.
The brain can detect calorie content in food independently of taste, according to a study published in Neuron. The research found that the brain's reward system is activated by caloric intake, leading to a preference for calorie-containing foods over non-caloric sweeteners.
Researchers discovered that astrocytes play a crucial role in cannabinoid signaling, interacting with neurons through endocannabinoid-glutamate signaling. This finding may lead to the development of new treatments for cannabinoid-related drug abuse.
Researchers found that human red blood cells use the protein Glut1 to transport DHA, allowing efficient antioxidant production, while other mammals lack this trait. The discovery sheds light on how humans adapt to an 'inborn' metabolic error.
Researchers have discovered that mantis shrimp can perceive circular polarized light, a previously unknown visual system. This ability is thought to be used for sex-specific communication and may provide a private channel of communication unavailable to predators and competitors.
A new class of painkillers that block the TRPV1 receptor may interfere with brain functions such as learning and memory, according to a recent study. The researchers found that the receptor regulates neural mechanisms involved in establishing memory pathways in the brain.
Scientists have established a mouse model for human malignant mesothelioma, an aggressive cancer originating from the mesothelial lining of the pleural cavity. The model closely resembles human MM, allowing researchers to study disease onset, progression, and test new therapeutic strategies.
An invasive population of the freshwater snail Melanoides tuberculata shows a tremendous amount of genetic variation for key life-history traits, allowing for large potential for evolutionary change. This diversity can arise from multiple invasions and amplification through sexual reproduction.
Researchers found that PPARÓ plays a protective role in the blood vessel wall, regulating vascular structure and function. This discovery provides a molecular explanation for some of the beneficial cardiovascular effects of TZD drugs.
Researchers found that mice treated with rimonabant, a cannabinoid receptor blocker, developed resistant livers to alcohol's fat-building effects. This discovery suggests that treating fatty liver with CB1 antagonists may slow its progression and prevent severe liver disease.
Researchers discovered that atypical protein kinase C (aPKC) stabilizes steroid receptor coactivator-3 (SRC-3) levels in breast cancer cells. This stabilization is associated with increased SRC-3 function and enhanced estrogen-receptor target gene transcription.
Researchers found that chimpanzees activate the same brain region as humans when producing communicative signals, suggesting a shared neural basis for language. The study suggests that this common ancestor may have possessed a 'language-ready brain,' with tremendous plasticity allowing for development of complex communicative signals.
Neurons can modulate nerve impulses by releasing two neurotransmitters that target the same receptor, accelerating inhibition and enhancing temporal resolution of inhibition. This finding may represent a new way the brain precisely controls nerve impulses in its circuitry.
A new study reveals that harvester ant mothers have a significant impact on their daughters' fate, with eggs predetermined to become workers or queens from the moment they are laid. The researchers found that only eggs laid by mature queens exposed to cold conditions develop into new queens.
Researchers have explored the brains of flies to understand their ability to integrate sight and smell, finding that panoramic visual cues are essential for accurate odor tracking. The study suggests that odor signals strengthen visual reflexes, allowing flies to navigate complex environments with remarkable accuracy.
Researchers have discovered characteristic patterns of brain activity in people with autism spectrum disorder (ASD) that reflect an inability to perceive themselves as social creatures. The study found that individuals with ASD exhibit diminished perception of self in social interactions, similar to those playing against a computer.
Experiments with rats reveal that severing connections between striatal regions decreases compulsive cocaine seeking behavior, highlighting the key role of the striatum in addiction. The findings suggest a complex neural mechanism underlying drug addiction development.
Researchers found that obese rats have abnormalities in brain regions critical for appetite control, including reduced responsiveness to the hunger-suppressing hormone leptin. This suggests that obesity may be wired into the brain from early life, making it challenging to reverse with exercise and diet alone.
Researchers identified CDK10 as a key factor in breast cancer treatment resistance, which occurs earlier in tumors expressing low levels of the protein. The study also found that methylation of the CDK10 gene correlates with resistance.
Researchers report that migratory Eurasian reed warblers can correct their travel routes after being flown east and head back to their original destinations. The findings suggest that the birds have true navigation capabilities, including identifying latitude and longitude, contradicting the notion of limited north-south navigation.
A study found that common human viruses, such as HRSV and HMPV, are responsible for outbreaks of respiratory disease in wild chimpanzees. The researchers suggest that minimizing human contact and implementing guidelines to reduce the risk of disease transmission can help protect great apes.
A team of researchers has identified pancreatic stem cells with the capacity to generate new insulin-producing beta cells in adult mice. These findings represent a significant breakthrough in understanding the pancreas's ability to regenerate beta cells, a crucial step towards developing effective treatments for diabetes.
Researchers identified genetic variants that affect the efficacy of antidepressants, such as citalopram and venlafaxine. These variants influence the access of drugs to the brain by impacting protective transporter proteins like P-gp.
A recent study published in the American Journal of Human Genetics reveals that chromosomal abnormalities contribute substantially to autism, with 7% of children carrying unique genetic changes. The researchers identified 13 regions of the genome with overlapping or recurrent chromosomal changes in unrelated individuals with autism.
Researchers discovered that a specific region of the HIV-1 envelope protein is embedded in the viral membrane, making it difficult to target with antibodies. However, a new approach using antibodies targeting this region could lead to the development of an effective HIV-1 vaccine
Researchers discovered distinctive activity differences in specific brain areas of hypnosis-susceptible individuals, which showed suppressed or increased activity during memory suppression and recall. The study suggests that hypnosis may model forms of amnesia by affecting an early executive decision on retrieval.
Researchers have discovered a new mechanism by which abnormal protein in Huntington's disease causes neurodegeneration. Suppressing abnormally high neurotransmission and calcium channel activity may delay onset and progression of the disease.
Researchers discovered that a transient and local rise in interleukin-6 (IL-6) is essential for the growth of muscle fibers. This finding could lead to new treatments for reversing or improving muscle loss in diseases such as cancer and AIDS, as well as normal aging.
The experimental weight loss drug, taranabant, has been shown to induce significant weight loss in obese patients, even at low doses. The drug blocks cannabinoid receptors in the brain, leading to a decrease in appetite and increased energy expenditure.
Research shows that blind cavefish populations can regain vision in their offspring through hybridization, highlighting genetic differences behind eye loss. The study found that mutations in distinct genes are responsible for eye loss in separate lineages, which can be compensated by good gene copies in hybrids.
Researchers found that cancer stem cells are stuck at an early developmental stage due to epigenetic repression of BMPR1B, leading to aberrant cell division and tumor growth. Forced expression of silenced BMPR1B restored normal differentiation capacity, offering new therapeutic approaches for glioma patients.
A new report suggests that preserving deep-sea biodiversity is crucial for the health of oceans. Researchers found that sites with a higher diversity of nematode worms support exponentially higher rates of ecosystem processes and increased efficiency. This study highlights the importance of protecting the world's most critical ecosystem.
A new study found that adult male chimpanzees, like females, have distinct core areas for foraging alone and show high site fidelity. They remain faithful to the area in which they grew up, even 20 years after their mother's death.
A recent study suggests that changes in global carbon dioxide levels likely influenced the emergence of C4 grasses, a group of plants crucial for food and biofuels. The researchers found a correlation between the drop in CO2 levels 30 million years ago and the evolution of these grasses.
Researchers have alleviated various abnormalities associated with fragile X syndrome by reducing the activity of a specific gene. The findings suggest that this approach may lead to treatment for the disorder, which affects brain structure and function, as well as causing mental retardation, epilepsy, and abnormal body growth.