Articles tagged with Intestines
Researchers have identified three previously unknown genotypes of Helicobacter bacteria in pygmy sperm whales stranded along the southeastern US coast. The discovery raises new questions about microbial pathogens on ocean health and their impact on vulnerable species.
Research reveals that chemotherapy alters the gut microbiota, producing indole-3-propionic acid, which travels to the bone marrow and rewires immune cell production. This leads to a metastasis-refractory state in preclinical models and improved survival outcomes in patients with colorectal cancer.
A research team identified a key function of the intestinal nervous system in controlling the intestinal barrier's composition and stability. The study suggests that the 'gut brain' acts as a central hub for health, immunity, and potentially conditions like allergies, and may be influenced by diet.
Researchers created a comprehensive single-nucleus transcriptomic atlas of the pig intestine, identifying 19 major cell types and 58 cellular subtypes. This study provides valuable insights into the mechanisms by which neurons regulate inflammatory responses and the molecular basis for stronger immune functions in wild boars.
Scientists discovered a precise communication system in the gut, where telocytes deliver signals directly to intestinal stem cells using fine extensions. This finding challenges long-standing assumptions about gut healing and repair, potentially leading to better treatments for conditions like IBD and colon cancer.
A team of Chinese researchers discovered that the body uses a unique fat molecule called ceramide-1-phosphate (Cer1P) to selectively recognize and manage specific bacteria in the gut. This 'dialogue' helps maintain intestinal health by triggering beneficial immune responses.
A new approach, GlycoCaging, delivers medicine directly to the lower gut at significantly lower doses than current treatments, potentially helping people with inflammatory bowel disease. The technique has been shown to be effective in mice and has potential for treatment in humans, as most people have the ability to activate the drugs.
Researchers have discovered that inhibiting the metalloprotease ADAM19 can reduce gut inflammation and cell aging markers across species. The study found that blocking ADAM19 reduced gut damage and inflammation in fruit flies, mice, and human cells, offering a promising path for creating treatments to maintain healthy tissues.
Researchers discover a link between gut health and blood cancer risk, finding that age-related gut changes can accelerate the growth of pre-leukemic blood cells. A specific bacterial sugar, ADP-heptose, plays a key role in this process, and a new blood test detects its activity.
Researchers discovered that gut bacteria can transform cholesterol-derived bile acids into powerful metabolites that strengthen anti-cancer immunity by blocking androgen signaling. These microbially modified bile acids antagonize the androgen receptor, driving anti-tumor immunity in mice with bladder cancer.
A new review from Marshall University researchers highlights emerging connections between gut health and sleep apnea, pointing to potential new therapeutic approaches for managing this common disorder. Alterations in gut microbiota composition have been consistently observed in individuals with sleep apnea, inducing systemic inflammati...
A new study reveals that the presence of Nora virus in laboratory strains of Drosophila fruit flies can increase their sensitivity to bacterial infection and limit their lifespan. Flies with persistent viral infections have higher stem cell growth rates, making them more susceptible to secondary pathogenic infections.
CU Cancer Center researchers discovered that H3K36 methylation regulates plasticity and regeneration in intestinal cells. The process, identified as a key 'switch', allows intestinal cells to regenerate after injury. This finding may lead to better treatments for colorectal cancer and other intestinal conditions.
A new study led by Harvard Medical School researchers has identified the PIEZO1 protein as a pressure-sensing molecule that helps regulate intestinal movements and keeps inflammation at bay. The findings, published in Cell, could inform the design of precision-targeted treatments for disorders of gut motility.
Researchers discovered that Wingless triggers cellular reorganization and contraction of tissue to form constrictions in the fly intestine. This finding expands our understanding of Wingless signalling pathway and its role in morphogenesis and organ development.
A study has established the importance of immunoglobulin A in generating a response to pneumonia vaccines. The research found that poor regulation of gut microbiota can lead to an inadequate immune response, leaving individuals vulnerable to respiratory infections.
Researchers at Virginia Tech have developed a method to convert gut bacteria into mini protein factories that produce and release sustained flows of targeted proteins within the lower intestine. This approach eliminates a major roadblock in delivering drugs to this part of the body, offering potential treatment for chronic diseases.
Researchers have developed a 'gut-on-chip' model that replicates intestinal inflammation and predicts response to immunotherapy in melanoma patients. The device differentiates between major intestinal populations and reproduces realistic environments.
Researchers at Virginia Tech have developed a way to convert gut bacteria into miniature protein factories that produce and release targeted proteins inside the lower intestine. This breakthrough could potentially treat chronic diseases.
Researchers at Tokyo University of Science have found that opioid delta-receptor agonists can alleviate stress-induced IBS symptoms in a validated mouse model by targeting the central nervous system. The study suggests that these drugs could provide a more definitive solution for IBS with minimal adverse effects.
A new study has identified specific gut cell types that communicate with T cells to tolerate or attack food, revealing how the intestinal immune system maintains balance. The findings also suggest that parasitic infections can disrupt tolerance mechanisms, leading to reduced food tolerance and increased allergy risk.
Gut bacteria that cross a weakened intestinal barrier induce epigenetic changes in bone marrow, generating trained immune cells primed to respond more efficiently to infections. However, this amplified immune response also contributes to the development of inflammatory diseases such as cardiovascular and neurodegenerative conditions.
Researchers discover immune cells regulate blood sugar levels by stimulating glucagon production in the pancreas. This complex neuroimmune-hormonal circuit reveals a new way the body maintains stable glucose levels, especially during periods of low energy.
Researchers found that a person's microbiome signature can predict the likelihood of Enterobacteriaceae colonization. Fiber-rich foods support the growth of beneficial Faecalibacterium, which produce short-chain fatty acids protecting against infection.
A groundbreaking study finds that beneficial gut microbes produce molecules that regulate bile acid production, fine-tuning fat metabolism and cholesterol levels in the human body. Boosting these molecules may help reduce fat accumulation and high cholesterol, while dietary fiber intake also supports their production.
A large-scale study analyzed the gut microbiomes of over 21,500 individuals and found that vegan diets had the healthiest microbiomes, followed by vegetarians and omnivores. The researchers discovered unique microbial signatures for each dietary pattern, with vegans having more beneficial bacteria associated with fiber fermentation.
A study by the National Center for Supercomputing Applications aims to create personalized nutrition plans based on an individual's unique gut microbiome. The researchers used Illinois Computes to analyze metabolomic data and develop a database of metabolites that can help diagnose diseases more efficiently.
A study by Michigan Medicine researchers suggests that sulfur-producing bacteria may be behind lingering Crohn's disease symptoms, even in the absence of inflammation. The study found that these bacteria can lead to increased visceral hypersensitivity and altered intestinal permeability, contributing to persistent symptoms.
Increasing serotonin levels in the gut epithelium improves symptoms of anxiety and depression in animal studies, suggesting a new therapeutic approach. The study also highlights the risk of digestive issues in children exposed to antidepressants during pregnancy.
Researchers at Texas A&M University have found that treating the intestine after a stroke can significantly reduce long-term cognitive impairment. The study suggests that repairing the gut is crucial in facilitating stroke recovery and reducing the risk of developing dementia or Alzheimer's disease.
A new study has found that tamoxifen works better for some people due to their unique gut microbiota. Researchers discovered a specific enzyme, beta-glucuronidase, in certain bacteria that helps recycle the drug into its effective form. This finding may lead to tailored treatment interventions for breast cancer patients.
Researchers at Karolinska Institutet have identified a molecule that can promote mucosal healing through tissue regeneration, potentially treating inflammatory bowel disease and colorectal cancer. The study found that activation of the Liver X receptor suppresses tumor growth in colorectal cancer, offering new therapeutic strategies.
Scientists at UMC Utrecht developed a new technology to isolate and study gut bacteria recognized by IgA antibodies, which are associated with various diseases. The next-generation IgA-SEQ method allows for high-throughput identification and analysis of these immunostimulatory bacteria, shedding light on their role in health and disease.
A new study maps the gut microbiome of over 1,300 children under five years old in Ethiopia, revealing a clear link between gut bacteria composition and the duration of diarrhea. The researchers identify beneficial bacteria that produce short-chain fatty acids, which are lacking in children with chronic diarrhea.
A new study from the University of Copenhagen aims to replace fecal capsules with a standardized treatment using fermented feces. The method employs fermentation to cultivate beneficial microorganisms, producing a complex mixture of bacteria and bacteriophages that can fight gastrointestinal disorders.
Researchers discovered that sea urchin larvae open their pylorus and anus entrances in response to different wavelengths of light, allowing for efficient digestion and nutrient absorption. This light-regulated control of the digestive tract may have evolved to help metazoans adapt to changes in their environment.
Researchers from UT Arlington sequenced RNA genes of pythons, discovering conserved pathways in humans that are activated uniquely by these snakes. This knowledge helps explain intestinal regeneration and metabolism changes, offering potential therapeutic targets.
Researchers at USC found a link between per- and polyfluoroalkyl substances (PFAS) and kidney damage, which may be tied to dysregulation of the gut microbiome. The study, published in Science of the Total Environment, suggests that changes in gut bacteria and related metabolites can explain up to 50% of decreased kidney function.
A team of researchers has developed strategies to identify regulators of intestinal hormone secretion, which could lead to new treatments for metabolic and gut motility disorders. They used human organoids to study the function of 'nutrient sensors' on hormone-producing cells in the gut.
Scientists at RIKEN CPR created a method to change albumin's molecular ID card, allowing for targeted treatments against diseases like cancer. The new technology can transport proteins out of the body, mimicking drug delivery and removal.
A team of researchers from the University of Washington has developed a flexible pipe with an interior helical structure inspired by shark intestines, which can keep fluid flowing in one direction without flaps. The design rivaled and exceeded Tesla valves, a one-way fluid flow device invented over a century ago.
Blanca Barquera's research aims to improve understanding of the energy metabolism of Bacteroides, a crucial step towards designing effective probiotic formulations. The study will investigate how Bacteroides utilize carbohydrates and Vitamin K from host diets.
A research team has successfully recreated wrinkle structures in biological tissue in vitro, revealing the mechanisms behind their formation. The study found that compressive forces and dehydration play a crucial role in wrinkle formation, mirroring aging skin effects.
A new study published in Frontiers in Immunology reveals that certain food proteins like milk and meat can help keep gut tumors from growing by triggering the intestinal immune system. This discovery has potential clinical implications for patients with gastrointestinal conditions.
Repeated antibiotic use can cause defects in the gut's protective mucus barrier, even months after treatment. This is due to changes in the microbiota or direct effects of antibiotics on the mucus layer. The findings suggest that antibiotics should be used responsibly to prevent long-lasting damage.
A McGill-led study found significant shifts in certain gut bacteria corresponding to changes in liver and intestinal genes, suggesting spaceflight may suppress the immune system and alter metabolism. The research could help ensure the success of future space missions and medical advancements on Earth.
Researchers found that Chlamydia bacteria can persist in the intestines of humans, where they form a permanent reservoir and evade antibiotic treatment. The bacteria preferentially infect the inner cell layer of intestinal organoids, but not the outer epithelial layer.
A Kobe University study establishes a new mouse model to study fetal abdominal inflammation caused by meconium peritonitis. The researchers found that heat-treated proteins in the meconium slurry disrupt digestive enzymes, leading to significant reduction in mortality rates.
Researchers discovered a unique probiotic strain, Bifidobacterium bifidum BB1, that strengthens intestinal barrier function and protects against harmful bacteria. This strain may lead to the development of novel therapies for patients with inflammatory bowel disease and other inflammatory conditions.
A team of researchers at UC Davis Health discovered a novel bioelectrical mechanism that allows Salmonella bacteria to navigate the gut lining and find vulnerable entry points. The study found that Salmonella bacteria detect electric signals in FAE, which helps them move towards openings in the gut where they can enter.
Researchers found COVID-19-related diarrhea mechanisms using human stem cells and enteroids, a single layer of cells in a petri dish. The study suggests testing inhibitors of inflammation may help treat COVID-19 diarrhea, linking it to long COVID symptoms.
Cancer cells can attach themselves to liver cells when specific proteins are present, allowing them to colonize and form new tumors. This discovery provides insights into the metastatic process and may lead to potential treatments that prevent cancer from establishing new tumors.
Scientists developed an AI-powered system to track tiny devices that monitor markers of disease in the gut. The system includes a wearable coil and ingestible pill with optical gas-sensing membranes, pinpointing device location and measuring gases like ammonia. Future improvements aim to make the device smaller and more power-efficient.
Two independent studies by Columbia scientists challenge long-held assumptions about gut stem cells, revealing they are descendants of true stem cells producing different proteins and responding to distinct signals. The discovery could revitalize regenerative medicine by targeting the correct stem cell populations.
A new therapy has been identified that can penetrate the slime protecting drug-resistant bacteria, allowing it to be killed by the body's immune system or antibiotics. The antimicrobial peptide, derived from cow peptides, targets sugar connections in the slime structure, damaging its integrity and allowing entry.
Neotame has been shown to cause previously healthy gut bacteria to become diseased and invade the gut wall, potentially leading to irritable bowel syndrome and sepsis. The study also found a breakdown of the epithelial barrier, which forms part of the gut wall.
A new study using spatial transcriptomics has generated a unique spatial atlas of intestinal cells in both healthy and inflamed states. The research reveals the evolution of cell populations during inflammation, particularly highlighting the significance of fibroblasts in response to gut inflammation.
A Northwestern University team developed a wireless, implantable temperature sensor to monitor inflammatory flareups in patients with Crohn's disease. This allows clinicians to act earlier to prevent permanent damage caused by inflammatory episodes.
A potentially fatal parasite has been discovered in the Colorado River in California, affecting dogs and causing liver and intestinal illness. Researchers confirm the presence of Heterobilharzia americana, a flatworm that can be transmitted through snails and water, highlighting the need for awareness and precautions among dog owners.
A new study found that common respiratory viruses such as colds and RSV play a larger role in triggering intussusception than previously thought. Hospital admissions for the condition decreased significantly during COVID-19 lockdowns, with a notable drop in cases among children under two.