Articles tagged with Parasites
The genome sequence of Plasmodium knowlesi has been defined, providing new research opportunities for comparisons with P. vivax. Establishing similarities and differences between the parasites' genomes will assist in the selection of genetic targets for vaccine and drug development.
The genome of Plasmodium knowlesi, a mosquito-human malaria parasite, has been decoded, revealing unique genetic features that enable it to evade host immune systems. The study found that the parasite's genes are scattered throughout its genome, unlike other malaria parasites, and that it uses molecular mimicry to survive and propagate.
The study reveals that Plasmodium vivax has a distinct genome with only 150 genes, raising new questions about its biology and infection mechanisms. Alternative routes of infection have been identified, highlighting the need for further research to combat this parasite.
Researchers from NYU Langone Medical Center have successfully decoded the genome of Plasmodium vivax, a species responsible for up to 40% of annual malaria infections worldwide. The breakthrough could lead to the development of new treatments and vaccines against this deadly disease.
A beetle uses a bacterium to protect its fungus from a competing mite, producing a novel antibiotic with potential for treating fungal diseases and cancer. The discovery highlights the importance of symbiotic relationships between insects and microbes in their survival.
A team of researchers has developed a method to separate parasitic organisms from their host cells using fluorescent proteins, allowing for more detailed studies. The approach yielded the identification of 509 proteins in the parasites, providing valuable characteristics such as fatty acid degrading enzymes.
Platelet activation plays a key role in the development of cerebral malaria by triggering an immune response and obstructing blood vessels in the brain. Researchers found that treating mice with aspirin or Plavix improved survival rates when administered soon after infection.
Researchers discovered that a parasitic plant can intercept host RNA molecules up to a foot from the point of infection, allowing it to synchronize its lifecycle with the host. This finding could lead to new ways to combat parasites that attack crop plants.
A study published in Nature shows that parasites have substantial biomass in ecosystems, sometimes exceeding that of top predators by a factor of 20. This challenges the long-held assumption that free-living organisms like fish and birds dominate biomass in habitats.
According to a report by Professor Bob Snow, funding for malaria control is severely inadequate, with many countries receiving less than $0.50 per person at risk. The research highlights regional disparities and shortfalls in funding, particularly in South East Asia and the Western Pacific regions.
Researchers have identified eight new proteins that transport the Plasmodium falciparum parasite's 'glue' to the surface of infected red blood cells. Removing one of these proteins prevents infected red blood cells from sticking to blood vessel walls, suggesting a potential target for new anti-malarial treatments.
The DOT1B enzyme helps epigenetically regulate VSG genes, allowing parasites to switch between coat variants. In its absence, silent genes become active, slowing down the switching process.
A research study found that extreme weather events can alter normal host-pathogen relationships, leading to catastrophic mortality from multiple infectious outbreaks in wildlife. Climate extremes can trigger mass die-offs of livestock and wildlife by creating a perfect storm of infectious diseases.
Indiana University scientists have identified a cellular signaling system that enables the toxoplasmosis parasite to transform into a cyst form, resisting drugs and the immune system. This discovery could lead to targeted therapies and a preventative vaccine for animals.
Maternal malaria researcher Professor François Nosten has won a prestigious international prize for his groundbreaking work on treating infections in pregnant women. His research has led to a revision of guidelines and improved treatment options for millions of people worldwide.
Scientists have disrupted malaria parasite transmission in animal tests by blocking potassium channels, preventing the formation of new infectious parasites. This breakthrough could pave the way for new anti-malaria treatments and counteracting the spread of the disease.
Researchers have found a way to prevent malaria parasites from becoming sexually mature, a crucial step in transmission. This breakthrough could lead to the development of new drugs targeting this stage of the life cycle, helping to control the spread of drug resistance.
A University of South Florida study found that protein MAEBL is essential for malaria parasites to invade mosquito salivary glands, allowing transmission to humans. By silencing the receptor for MAEBL, researchers hope to block passage of the parasite through mosquitoes.
Researchers found an avian malaria parasite in a Spotted Owl from Oregon, sparking concerns about the bird's immune health and conservation status. The study highlights the need for further research into blood-borne pathogens in wild bird populations.
A study by Emory University researcher Jacobus de Roode found that higher levels of replication within the host result in both increased virulence and greater transmission of parasites. This suggests that natural selection selects for harmful parasites, prioritizing their fitness over host health.
Researchers have created a new technique for diagnosing malaria that could be as effective as current rapid diagnostic tests but far faster and cheaper. The method uses magneto-optic technology to detect haemozoin, a waste product of the malarial parasite, in blood samples.
Researchers at Virginia Tech have identified Heme Detoxification Protein (HDP), which rapidly converts heme into its non-toxic counterpart hemozoin, protecting the malaria parasite from toxic damage. This finding presents a promising target for developing new malaria drugs.
Researchers at Florida State University have discovered an autoimmune-like response in the blood of malaria-infected African children that helps explain why existing DNA-based anti-malaria vaccines have repeatedly failed to protect them. The study sheds light on the unique medical needs of malaria's smallest, most vulnerable victims an...
Researchers found that infection with the parasite creates distinct metabolic 'fingerprints' in the blood and urine, which can be detected as early as one day after infection. The findings could enable a simpler way to test for sleeping sickness, improving survival rates and reducing devastating side effects.
Researchers pooled data from 15 clinical trials to compare the efficacy of rectal artemisinins and conventional injectable antimalarials like quinine. Rectal artemisinins cleared malarial parasites more rapidly than quinine, suggesting they could be a lifesaving intervention in severe malaria cases.
A Michigan State University researcher is leading a study on insecticide-treated bed nets to disrupt mosquito populations and reduce malaria transmission. The project aims to evaluate the effectiveness of bed nets over time and monitor changes in parasite populations and virulence factors.
Researchers found several soybean varieties that grow well in southern Indiana and are resistant to root-knot nematodes, a plant-destroying parasite. These resistant varieties can help reduce the number of nematodes in the soil, improving crop yields and reducing environmental damage.
Researchers have identified chemical compounds, oxadiazoles, that inhibit a crucial enzyme vital to the survival of Schistosoma parasites causing schistosomiasis. The compounds showed promise in killing the parasite in all stages and were active against major species.
A research team led by Mark Hoddle has successfully used biological control to eradicate the glassy-winged sharpshooter, a major agricultural pest, from Tahiti and neighboring islands. The team introduced a microscopic parasitic wasp that attacks the insect's eggs, reducing its population to less than 5% of its original density.
A new drug, JPC-2056, is 10 times more effective than the current gold-standard treatment for toxoplasmosis and has no toxicity. It inhibits the action of an enzyme produced by the parasite, making it a promising treatment option.
A new global malaria map highlights the 2.37 billion people at risk from Plasmodium falciparum, with almost one billion in areas where the risk of infection is extremely low. The map aims to help researchers and funding agencies allocate resources more effectively by understanding the relative risk affecting different regions.
A study found genetically similar lice on 1,000-year-old Peruvian mummies, challenging the idea that all diseases were transmitted from the Old World to the New World at the time of Columbus. The discovery sheds new light on human migration patterns and may help understand the origins of epidemic typhus.
Researchers are conducting trials for a new malaria vaccine using a genetically-modified chimpanzee adenovirus to stimulate an immune response. The goal is to develop a combination product targeting both liver and blood stages of the parasite to prevent infection.
A 13-year study found significant changes in Onchocerca volvulus populations' genetic structure, indicating adaptation to repeated ivermectin treatments. The parasite's resistance to the drug threatens the current control strategy against onchocerciasis.
Cutaneous leishmaniasis is a non-lethal but potentially severe disease that can be prevented with rapid and accurate diagnosis and treatment. New techniques, such as the QT-NASBA technique and real-time Reverse Transcriptase PCR, have been developed to detect and quantify Leishmania parasites, leading to improved treatment outcomes.
A team of researchers has discovered a means of inhibiting Entamoeba histolytica, a parasite that causes colitis and kills nearly 100,000 people each year. By targeting a protein called PATMK, the study successfully prevented the parasite from eating dead cells.
A newly discovered parasite transforms its ant host into a ripe red berry, tricking birds into eating infected ants to spread the infection. The parasite, Myrmeconema neotropicum, causes the ant's gaster to turn red and become sluggish, making it easy for birds to consume.
A large comparison of blood samples found Toxoplasma gondii parasite infection may increase schizophrenia risk in people diagnosed with the disorder. People exposed to toxoplasma had a 24% higher risk of developing schizophrenia.
Researchers found Plasmodium knowlesi, a monkey malaria parasite, is widely distributed in Malaysia and sometimes fatal. Accurate diagnosis and treatment are crucial to prevent rapid onset of complications and death.
Researchers genetically engineered a mosquito to release sea-cucumber protein, which impairs malaria parasite development in the insect's gut. The study shows promise for preventing transmission of malaria by disrupting parasite growth and development.
Researchers at Case Western Reserve University School of Medicine have identified a Duffy binding protein-based vaccine that could provide protection against P. vivax malaria. The vaccine targets the specific interaction between the parasite and human red blood cells, offering a promising path toward eliminating the disease.
Researchers have developed a new technique to detect malaria infection in human blood using lasers and non-linear optical effects, eliminating the need for slides and microscopes. The technique holds promise for simpler, faster, and labor-intensive detection of the malaria parasite.
Researchers genetically engineered mosquitoes to release a sea-cucumber protein that impairs malaria parasite development, potentially preventing transmission. The study shows promising results but still requires further work before being effective in real-world scenarios.
Scientists discovered three biological classes of malaria parasites with distinct metabolic states, including one linked to patient symptoms. The findings suggest a possible correlation between parasite behavior and disease severity.
A groundbreaking study measures gene activity in malaria parasites in humans for the first time, revealing three distinct biological states and their connection to the body's inflammatory response. These findings may help explain the varying courses of the disease in patients.
Using fewer drugs in treating malaria could help slow the spread of drug resistance, making patients just as healthy. Longer treatment periods increase resistant parasite numbers, which can lead to shorter lifespan of antimalarial drugs.
Researchers have developed a genetic identity card for Plasmodium falciparum populations, revealing high genetic diversity and inbreeding rates. The study's findings can help predict changes in genes involved in drug resistance, enabling targeted therapies to minimize resistance development.
Researchers found that animals, like plants, can build tolerance to infections at a genetic level, allowing them to withstand parasite loads. This tolerance is negatively related to resistance, with animals either killing or tolerating parasites but not both.
Research in Zanzibar, Tanzania found a remarkable fall in children dying from malaria, with deaths among the islands' children dropping to a quarter of the previous level. The achievement follows the introduction of improved treatment and the implementation of widespread use of insecticide-treated mosquito nets.
New insights into the co-evolutionary relationship between sawflies and their parasites show that parasitism promotes ecological divergence in herbivorous insects. The study reveals a food web involving willow trees, sawflies, and parasites feeding on sawfly larvae.
A new study reveals that parasites play a pivotal role in the decline of species in fragmented forests. Red colobus monkeys were found to be infected with more human or livestock parasites than their black-and-white cousins, due to their varied diet and increased travel range.
Researchers at the University of Iowa and Veterans Affairs Medical Center discovered how African trypanosomes shed their VSG surface protein to evade the immune system of tsetse flies. This enzyme synergy is a key step in the pathogenesis of sleeping sickness, which affects 60 million people in Sub-Saharan Africa.
A new study published in Molecular Ecology sheds light on the Galápagos hawk's evolutionary history by analyzing DNA sequences from feather lice. The research reveals how island populations of the bird might have colonized the Galápagos islands, and provides insights into the evolution of cooperative behavior.
A CU-Boulder study shows that high levels of nutrients from farming and ranching activities fuel parasite infections, causing highly publicized frog deformities. The research found that increased nitrogen and phosphorus levels stimulate algae growth, leading to sharp hikes in snail populations and infectious parasites.
A global team of researchers has revealed the genetic sequence of Brugia malayi, a parasitic worm that causes debilitating diseases in over 40 million people. The study identifies dozens of potential new targets for drugs or vaccines, including genes involved in molting, immune signaling, and host metabolism.
A team of researchers funded by the National Institute of Allergy and Infectious Diseases has solved the complete genome of Brugia malayi, a parasite that causes elephantiasis. This breakthrough reveals dozens of potential new targets for drugs or vaccines, offering new opportunities for understanding, treating and preventing the disease.
Researchers have discovered that a sugar in mosquitoes allows the malaria-causing parasite to attach itself to the gut, enabling its development and transmission. Reducing this sugar can prevent parasites from developing, offering a promising approach to blocking malaria spread.
Researchers found that the human immune system uses hemoglobin to bind to HDL and create a toxin that clears trypanosomes from the body. This discovery could lead to better treatment options for cattle infections and provide insights into understanding why some parasites don't infect humans.
Binghamton University researchers study archived human blood samples to understand how Plasmodium falciparum evolved resistance to chloroquine. The analysis aims to provide insights for current treatments and future drug development.
Researchers discovered that heparan sulfate is a receptor for the malaria parasite, allowing it quick transport through the body. This finding could lead to an environmentally safe and inexpensive way to block infection in mosquitoes, preventing malaria spread without drug side effects.