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Parasite in Biological News

Mosquito parasite may help fight dengue fever

Dengue fever is a terrible viral disease blighting many of the world's tropical regions. Carried by mosquitoes, such as Aedes aegypti , 40% of the world's population is believed to be at risk from the infection. What is more, previous exposure to other strains of the fever does not confer protect...

Researchers identify new way the malaria parasite and red blood cells interact

RICHMOND, Va. (March 10, 2009) -- Virginia Commonwealth University Life Sciences researchers have discovered a new mechanism the malaria parasite uses to enter human red blood cells, which could lead to the development of a vaccine cocktail to fight the mosquito-borne disease. Malaria is transm...

Reduction in parasite infections ahead for India

Experts from Queen's University are in India today (Monday) to advise the country on how it can reduce parasitic infections which destroy plants and animals. The biotechonology experts from the Belfast-based University are at the forefront of research into the infections which cost the world ec...

Malaria parasite zeroes in on molecule to enhance its survival, team finds

A team of researchers from Princeton University and the Drexel University College of Medicine has found that the parasite that causes malaria breaks down an important amino acid in its quest to adapt and thrive within the human body. By depleting this substance called arginine, the parasite may tr...

NC State researchers get to root of parasite genome

North Carolina State University scientists and colleagues have completed the genome sequence and genetic map of one of the world's most common and destructive plant parasites - Meloidogyne hapla , a microscopic, soil-dwelling worm known more commonly as the northern root-knot nematode. The res...

Plant parasite 'wiretaps' host

A parasitic plant that sucks water and nutrients from its plant host also taps into its communications traffic, a new report finds. The research could lead to new ways to combat parasites that attack crop plants. Professor Neelima Sinha and colleagues at the UC Davis Section of Plant Biology s...

Scientists demonstrate feasibility of preventing malaria parasite from becoming sexually mature

Researchers have demonstrated the possibility of preventing the human malaria parasite, Plasmodium falciparum, which is responsible for more than a million malaria deaths a year, from becoming sexually mature. The discovery could have implications for controlling the spread of drug resistance...

Clue to mystery crustacean in parasite form

First identified in 1899, y-larvae have been one of the greatest zoological mysteries for over a century. No one has ever found an adult of these puzzling crustaceans, despite the plethora of these larvae in plankton, leading generations of marine zoologists to wonder just what y- larvae grow up t...

Ant parasite turns host into ripe red berry, biologists discover

Berkeley -- A newly discovered parasite so dramatically transforms its host, an ant, that the ant comes to resemble a juicy red berry, ripe for picking, according to a report accepted for publication in The American Naturalist. This is the first example of fruit mimicry caused by a parasite, the c...

Study of malaria parasite in patient blood finds distinct physiological states

The malaria parasite has been studied for decades, but surprisingly, little is known about how it behaves in humans to cause disease. In a groundbreaking study published November 28 in the advance online edition of Nature, an international research team has for the first time measured which of the...

Indiana U scientists uncover potential key to better drugs to fight toxoplasmosis parasite

INDIANAPOLIS Discoveries by Indiana University School of Medicine scientists have opened a promising door to new drugs for toxoplasmosis and other parasites that now can evade treatments by turning dormant in the body. Their findings help explain how the parasite that causes toxoplasmosis tran...

Potent possibilities for parasite attack

A comparison of three parasite species that cause Leishmaniasis has identified a small number of genes, many new to biology, that will provide a framework to target the search for new treatments. Leishmaniasis is a devastating disease that affects about two million people each year and threatens o...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

Researchers have decoded the genetic makeup of the parasite that causes trichomoniasis, one of the most common sexually transmitted infections (STIs), revealing potential clues as to why the parasite has become increasingly drug resistant and suggesting possible pathways for new treatments, diagnos...

Malaria vaccine prompts victims' immune system to eliminate parasite from mosquitoes

Researchers at the National Institutes of Health have developed an experimental vaccine that could, theoretically, eliminate malaria from entire geographic regions, by eradicating the malaria parasite from an area's mosquitoes. The vaccine, so far tested only in mice, would prompt the immune sys...

New understanding of parasite cell structures may provide treatments for serious tropical diseases

Don't even think about trying to pronounce it. Although it is found in many organisms including humans, glycosylphosphatidylinositol has remained a mouthful for laymen and a puzzle for scientists. And yet GPIs, as science thankfully calls these cellular lipids, are important in numerous biological ...

African parasite makes component of fat differently from all other organisms

Studying the parasite that causes African sleeping sickness, scientists at Johns Hopkins have discovered a previously unknown way of making fatty acids, a component of fat and the outer layer of all cells. The find unveils more about the biology of this hard-to-kill parasite and could lead to a tar...

Chlamydia parasite lives off our fat

Invasive bacterial pathogens, the Chlamydiae know us very, very well. The Chlamydiae learned to parasitize eukaryotic cells half a billion years ago by reprogramming cellular functions from within. In humans today, chlamydial infections are responsible for a range of ailments from sexually transmit...

Sleeping sickness parasite shows how cells divide their insides

Researchers at Yale have brought to light a mechanism that regulates the way an internal organelle, the Golgi apparatus, duplicates as cells prepare to divide, according to a report in Science Express. Graham Warren , professor of cell biology , and his colleagues at Yale study Trypanosoma bruc...

Gene that helps mosquitoes fight off malaria parasite identified

Researchers have identified a gene in mosquitoes that helps the insects to fight off infection by the Plasmodium parasite, which causes malaria in humans. Anopheles mosquitoes transmit the malaria parasite to nearly 550 million people worldwide each year with these cases resulting in more than 2 mi...

US/African project deciphers deadly parasite genome

An innovative North-South research collaboration has culminated in a study published in this week's Science that provides molecular clues to help develop new ways to treat or prevent East Coast fever. The disease, which kills a million cattle a year in East and Central Africa, has had a devastat...

Researchers discover how malaria parasite disperses from red blood cells

Researchers at the National Institute of Child Health and Human Development have determined the sequence in which the malaria parasite disperses from the red blood cells it infects. The National Institute of Child Health and Human Development is one of the Institutes comprising the National Instit...

Three deadly parasite genomes sequenced

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth of marine organisms such as barnacles on ship hulls is a major cause of increased energy costs in the naval industry. Shark skin offers a structural design that prevents this so called 'bio-fouling'. Ralp...

Invasive parasite destroying fish species

Assistant Professor Mark Pagani in the Department of Geology and Geophysics at Yale and his colleagues mapped the first detailed history of atmospheric carbon dioxide between 45 - 25 million years ago based on stable isotopes of carbon in a National Science Foundation study reported in Science Expr...

A human parasite with a streamlined mitochondrion

Mitochondria, as they are defined in textbooks, are essential for eukaryotic cells--including our own--because they make large amounts of energy as they use oxygen. However, some eukaryotic cells, including important parasites of humans--such as Entamoeba histolytica, the causal agent of amoebic dy...

First genetically-engineered malaria vaccine to enter human trials

...ists have created a weakened strain of the malaria parasite that will be used as a live vaccine against the di...leted two key genes in the Plasmodium falciparum parasite which causes the form of malaria most deadly to humans. By removing the genes the malaria parasite is halted during its liver infection phase, preven...

Parasitic worms make sex worthwhile

... struggle between a New Zealand snail and its worm parasite makes sex advantageous for the snail, whose female...ly go and where parasites are less common. "The parasite can infect both sexual and asexual snails," said I...y report. "What matters here is the fact that the parasite can't complete its life cycle in the deeper parts ...

Study finds role for parasites in evolution of sex

...he same genetic vulnerabilities to parasites. If a parasite emerges that can exploit those vulnerabilities, it...pring are genetically unique, often with different parasite vulnerabilities. So a parasite that can destroy some can't necessarily destroy al...

Tryptophan deficiency may underlie quinine side effects

...f this important drug. Quinine is a very commonly used anti-malarial drug, yet to this day the principal mode of quinine action against the malaria parasite is still largely unclear, as is the basis for adverse reactions like nausea, headaches, and blurred vision. To address these gaps, Simon Avery and col...

U of M study finds new insight on therapy for a devastating parasitic disease

...portant new insight into how a commonly prescribed drug may work to treat those infected by a parasitic flatworm. The Schistosomasis parasite infects about 200 million people in tropical areas worldwide and is endemic in more than 70 countries, where people become infected simply by bathing,...

Studies shed light on collapse of coral reefs

...cess from the algae to the coral, telling it that the algae belong there, and that everything is fine. Otherwise the corals would treat the algae as a parasite or invader and attempt to kill it. "Even though the coral depends on the algae for much of its food, it may be largely unaware of its presence," We...

American Chemical Society's Weekly PressPac -- May 20, 2009

... ACS' weekly newsmagazine. C&EN senior editor Lisa Jarvis explains in the article that existing anti-malaria drugs are losing effectiveness as the parasite responsible for the disease develops resistance. The article describes how the retired Merck researcher provided a long forgotten 1947 research paper ...

Old stain in a new combination

...sinins block reproduction of the parasites in the human body and reduce the number of gametocytes in blood by half. This makes the transmission of the parasite to the mosquito more difficult but does not completely prevent it. "We urgently need alternative therapies that are effective against the gametocytes ...

New lead on malaria treatment

...f Medicine have discovered one way to stop malaria parasite growth, and this new finding could guide the devel...r cell survival. They reasoned that if the malaria parasite has its own MetAP2, finding a chemical that disrupts MetAP2 function may lead to a new drug to stop parasite growth and malaria spread. So they searched a comp...

New phorid fly species turns red imported fire ants into 'zombies'

...nfected with a new type of phorid fly, a minuscule parasite that only preys on red imported fire ants. The ...of the parasite. Then their heads fall off and the parasite emerges," said Ludwig, , AgriLife Extension integr...about 55 yards away from the mound to die. "The parasite does this so it can complete development without b...

Bacteria play role in preventing spread of malaria

...on of the insect with Plasmodium falciparum , the parasite that causes malaria in humans, according to resear...ion cycle, a mosquito acquires the malaria-causing parasite when it feeds on blood from an infected person. The parasite develops within the mosquito and can then be trans...

Alzheimer's, asthma, cancer, malaria and TB focus of new Singapore grants

...ssful malaria intervention is our limited understanding of how the malarial parasite evades detection by the spleen our immune system's control centre," said D...both from the host as well as the parasite, contribute to the efficiency of parasite removal and could lead to new intervention strategies against the parasite,...

When industrious ants go too far

...ng space for ants. So in this relationship, the ant wins, and the plant appears to have lost. So does this mean that octoarticulatus is really a parasite rather than a mutual partner? That's hard to say, according to Dr. Frederickson. Nodosa plants generally live about 77 years, while ant colonies only...

Lice can be nice to us

... parasite infestations might have a good side. Wild mice from a Nottinghamshire forest have given experts at The University of Nottingham clues as to the import...

New hope for advances in treating malaria

...drogenase (DHODH) - essential to the growth of the parasite - from working, which results in its death. Says...developed at Leeds bind to the DHODH enzyme in the parasite and stop it functioning, preventing the proliferat...ical inhibitors that have a negative impact on the parasite without any major side-effects to the human host. ...

A cure for honey bee colony collapse?

... For the first time, scientists have isolated the parasite Nosema ceranae (Microsporidia) from professional apiaries suffering from ... primary cause in professional apiaries. "Now that we know one strain of parasite that could be responsible, we can look for signs of infection and treat any...
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