Articles tagged with Parasitic Diseases
Researchers found that parasite costs and virulence depend on the infection status of competitors, with infected individuals doing better when paired with an infected competitor. High prevalence of infection in a population means healthy larvae face less competition, leading to improved development and survival.
A study by researchers at the University of Illinois found that intense selective logging changed the ecological balance for three primate species, leading to increased parasitic infections in red-tailed guenons. The monkeys experienced behavioral changes and reduced protein and vital mineral intake due to decreased food availability.
Researchers at Emory University found that infected monarch butterflies flew slower, were tired faster, and had reduced flight ability compared to healthy ones. The study suggests parasite burdens are lower in migratory populations, which may have implications for conservation efforts.
Parasitized monarch populations are more susceptible to habitat loss and climate change, leading to a decline in migratory populations. The study's findings suggest that long-distance migration can amplify the effects of parasite infections on hosts.
Cryptosporidium hominis is a highly contagious parasite that causes watery diarrhea and can lead to dehydration, weight loss, and stomach cramps. The decoded genome sequence holds promise for developing preventive vaccines and pharmaceutical treatments.
Researchers found that climatic factors are the most important determinant of human pathogen distribution, contradicting conventional assumptions about disease control. Understanding ecological links between disease and environment could inform effective preventive strategies.
A study found that high nutrient levels lead to increased rams horn snail populations, which in turn cause more parasite infections and deformities in frogs. This research may help explain the recent increase in amphibian malformations and suggest control strategies.
A Canadian researcher finds a strong link between sea lice from salmon farms and declining native salmon populations in BC. Meanwhile, an opposing expert suggests other factors are at play and that correlation does not necessarily imply causation.
A team of biologists has discovered that the parasite relies on salvage enzymes to steal nutrients from its host to survive. This discovery provides new targets for drugs designed to treat victims of this parasitic disease, which causes chronic severe diarrhea and life-threatening complications in AIDS patients.
Out-of-balance ecosystems play a significant role in the demise of amphibian populations. Human activities, parasites, and environmental changes are contributing factors. The research highlights the importance of managing landscapes and water bodies to prevent further declines.
A study found that cows can be genetically classified into three groups based on their resistance to intestinal worms. The research suggests that understanding the genetic factors behind this resistance could lead to the development of a vaccine to prevent gastrointestinal worm infections.
A new UC Davis analysis reveals that adult sea otters in California are dying at an alarming rate due to diseases and parasites. The study found that nearly two-thirds of the otters died from disease, with parasitic infections being a major cause, including thorny-headed worms and protozoa.
The decoded Neurospora genome shows that humans share genetic similarities with the common bread mold, with around 10,000 genes. This discovery could lead to advances in genetic-based medical treatments and the development of new materials.
A U.Va. researcher has made significant breakthroughs in treating the parasite that causes amebiasis, a disease responsible for millions of cases and deaths globally each year. The researcher's team developed an FDA-approved diagnostic test to improve diagnosis accuracy and a potential vaccine based on immunity in children.
Researchers have discovered that Bt toxins can kill a range of parasitic nematode species, including those affecting humans, animals, and crops. The findings suggest the potential for developing an inexpensive and environmentally safe means of controlling parasitic roundworms.
A recent UC study found that 42% of live sea otters and 62% of dead sea otters were infected with Toxoplasma. The researchers suggest that land-based freshwater runoff is a source of the parasite, likely transported by surface runoff from fields and yards to coastal areas.
Wohlbachia bacteria can convert males to females through sex changes or kill them in eggs, sparking defensive tactics in infected insects. Jonathon Knight's award-winning Nature article shed light on this common parasitic microbe's impact worldwide.
A new study found a striking connection between malformed amphibians and the presence of Ribeiroia, a parasitic infection. The parasite was linked to limb malformations in over 12,000 amphibians across 11 species, with Pacific treefrogs exhibiting the greatest number of abnormalities.
Children with severe stunted growth at age 2 scored 10 points lower on cognitive tests than their peers, indicating that the detrimental effects of malnutrition linger through childhood. Diarrhea caused by G. lamblia parasite also reduced test scores, highlighting the importance of addressing nutritional needs in young children.
A new computer diagnostic program has been developed to help physicians diagnose rare infectious diseases. The database contains information on 223 infectious and parasitic diseases common to animals and humans.
Researchers explore how ecological principles, such as the dilution effect, predict the movement of parasites and diseases in various ecosystems. Studies examine the impact of animal diversity on disease transmission, with findings highlighting the importance of community diversity in preventing the spread of infectious diseases.
Experts examine parasitic and infectious diseases that can be spread by animals to people, highlighting the importance of integrated perspectives on human-animal interaction. The symposium aims to create a forum for discussing public health and food safety issues related to animal-human relationships.
Scientists have discovered a potential drug target for treating African sleeping sickness by identifying a unique metabolic pathway in the parasite. The discovery offers hope for developing effective treatments for the estimated 500,000 people affected by the disease.
Feline infectious anemia has been identified as caused by Haemobartenella felis, a previously suspected but now confirmed mycoplasma organism. The discovery of this tiny parasite provides hope for developing a diagnostic tool and potentially a vaccine to combat the disease.
A NASA-funded study on climate change and amphibian declines found no significant correlation between the two. However, researchers suggest that disease may be indirectly influenced by climate and environmental factors.
Researchers at Weizmann Institute have discovered the 3-D interaction between galanthamine and brain enzyme acetylcholinesterase (AChE), which breaks down neurotransmitter acetylcholine in Alzheimer's disease. This finding may lead to a new family of drugs with reduced side effects.
Researchers found that 70% of Southeastern adults with Lyme-like symptoms were not infected with the standard Borrelia burgdorferi strain. Instead, a genetically variant strain was detected, which may be more responsive to antibiotic therapy and less virulent than traditional Lyme disease.
Dr. Rafi Ahmed will deliver a lecture on immune memory to viruses as part of the 1999 Tadeusz J. Wiktor Memorial Lecture series at The Wistar Institute. His research focuses on chronic viral infections and immunology, building on his PhD in Microbiology and Molecular Genetics from Harvard.
Researchers at The Wistar Institute are developing vaccines targeting the mucosal immune system to prevent HIV-1 and human papilloma virus infections. They aim to induce neutralizing antibodies and killer T cells to prevent cancerous transformations in cells, with a focus on cervical cancer caused by HPV.
The Wistar Institute has received a five-year grant from the National Cancer Institute to develop new diagnostic tools and treatments for metastatic melanoma. The goal of this project is to improve patient outcomes by understanding the underlying molecular events that contribute to the development and progression of the disease.
Dr. Daniela Santoli to develop TALL-104 regimen for effective and safe treatment of metastatic melanoma patients; trials expected to start later this year.
Two studies published in Science suggest that parasites, specifically Riberoria trematodes, are responsible for some frog deformities. Laboratory and field experiments found that parasite infections cause mirror-image limb deformities, distinct from the thigh-knee-thigh-knee pattern caused by retinoids.
The Wistar Institute's Regeneration Symposium will feature talks on epimorphic regeneration, limb regeneration, and the role of ependymal cells in spinal cord regeneration. Experts like David Stocum, Alejandro Sanchez Alvarado, and Susan V. Bryant will share their research findings.
The Wistar Institute hosted a symposium on regenerative biology, featuring experts discussing recent advances in understanding regeneration in metazoans, stem cells, and nervous systems. Key findings included insights into limb regeneration, spinal cord repair, and muscle cell replacement.
Researchers found that FTIs activate features of RHO by stimulating the production of an isoform with altered properties, making it possible for RHO to perform activities it could not previously perform. This understanding will lead to more effective and targeted cancer treatments.
A Wistar scientist has been awarded a $30,000 grant from the Cancer Research Foundation of America to develop a vaccine against Human Papilloma Virus-16. The grant will support research aimed at finding a vaccine that uses either the E6 or E7 protein from HPV-16 to activate T-cells.
Dr. Gerardo Vasta will discuss diseases in the ocean, including parasitic diseases affecting shellfish and fish species, which can harm human health and the environment. He will also highlight the importance of developing accurate probes for detection and monitoring of pathogens.
Dr. Francesca Marassi, a Wistar professor, has been awarded a $228,000 grant from The W.W. Smith Charitable Trust to study the molecular structure of PLM, a protein that regulates cardiac muscle contractions. This research aims to understand how mutated amino acids affect PLM functions and develop therapeutic treatments.
Researchers at Clemson University are testing a naturally occurring disease to control fire ant populations, which have devastating effects on the environment and economy. The disease reduces the ability of queen ants to lay eggs, slowly killing colonies over six to eight months.
Asthma researchers identified two molecules, interleukin-4 and interleukin-13, that connect to a specific receptor and initiate inflammation, increasing the number of goblet cells producing excessive mucus. This finding paves the way for developing more effective treatments that control the disease at its cellular level.
Researchers at The Wistar Institute have discovered two genes, Alphav and Beta3, that play a crucial role in melanoma development. These findings suggest that blocking the activity of the vitronectin receptor could be an effective way to prevent cancer progression.
A veterinary parasitologist and his team have demonstrated that dogs are definitive hosts for Neospora caninum, a single-celled parasitic organism causing cattle abortions. This discovery has led to recommendations for improved cattle management strategies to reduce economic losses estimated at $35 million per year.
The Hilary Koprowski Endowed Professorship will provide long-term support for renowned scientists, setting a precedent for additional endowed professorships at The Wistar Institute. Established in honor of Dr. Koprowski's contributions to medical research, the chair aims to advance vaccine development and cancer research.
Scientists have discovered that interleukin-12 (IL-12) can trigger the production of a protein called interferon-gamma (IFN-), which blocks tumor-induced angiogenesis. This finding suggests that tumor cells may be able to produce their own antiangiogenic elements, potentially leading to new cancer therapies.
Conjugated linoleic acid (CLA) has been shown to reduce atherosclerosis in cholesterol-fed rabbits, eliminating some fat already present. The Wistar Institute, established in 1892, is making history through its development of vaccines and discovery of molecules helping the immune system fight diseases.
A new molecule, Bin1, has been identified by Wistar scientists as a potential indicator of malignant prostate cancer. Bin1 interacts with and limits the malignant potential of Myc, a protein found frequently in prostate cancers.
A study by Penn State economists suggests that climate change could lead to an increase in waterborne diseases like Cryptosporidiosis, which can be fatal among immunocompromised individuals. The researchers estimate that doubling the frequency of 100-year floods could add up to $70 per person in costs.
Natural T cells are specialized cells that are part of white blood cells and help the body fight disease. Researchers at Penn State's College of Medicine have discovered that CD1d1 associates with glycolipids to transduce signals that 'turn-on' natural T cells, which helps the body fight disease.
A University of Delaware scientist has identified a critical dispatcher gene NDR1 that coordinates the defense response in Arabidopsis thaliana against a broad range of attackers. The gene may ultimately help researchers design hardier, more disease-resistant crops.
Scientists found that heart damage in Chagas' disease patients is due to the immune system's reaction to parasitic infections, contrary to previous thought. The study has significant implications for treatment and prevention strategies.
Leptospirosis, a bacterial disease carried by rats, poses a significant risk to urban residents in the US. Studies have shown that up to 10% of infected individuals develop severe Weil's disease, which can be fatal.
Researchers successfully engineer a protein-based vaccine that primes killer T cells to respond against infection, providing protection against a model pathogen. The approach shows promise for developing new vaccines against viruses, bacteria, and parasites, as well as cancer vaccines and therapies.
A new diagnostic test uses purified proteins to detect Neospora caninum, a parasite causing cattle abortions. The test has been developed by the US Department of Agriculture and is expected to be commercially available within two to three years.