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Tag: "cause" at biology news

Research shows smoking adds a decade to reproductive age of IVF patients

...ere strongest among those women who had no obvious cause for not conceiving, according to the research, pub...s not common during that period. They divided the cause of subfertility into four categories ?fallopian tube problems, male subfertility, unexplained fertil...

Mutation in clams protects against paralytic shellfish poisoning but raises human health risk

...e people, clams can be affected by the toxins that cause paralytic shellfish poisoning (PSP), but scientists have now identified a mutation in clams that gives some protection. PSP toxins interfere with nerve function, and the mutation, which changes a single amino acid in a sodium channel, makes nerves le...

Venom doc tracks down snake bioweapons

...re specific, highly potent toxins, ones that would cause their victims' bodies to turn against themselves upon injection. Over time, these newly derived toxins became a normal part of the saliva protein repertoire. To date, 24 different snake venom toxins have been characterized by scientists, but the evol...

Pair of cancer genes found to drive both cell migration and division

...s of immune cells move to one part of the body and cause it to swell painfully, he says. The researchers also hope their findings will provide a bridge between two scientific fields that have traditionally kept to themselves. "Scientists studying cell migration have focused on the front of the cell and w...

U. Iowa researchers improve Huntington's disease symptoms in mice

... HD, one mutated copy of the gene is sufficient to cause the disease. However, the normal Huntington gene produces a protein that is known to be critical in embryonic development. It is not known if the protein is critical in adult brain cells. The RNAi molecule used in Davidson's current study would sile...

Scientists find viruses can't stick to sea bugs in the dark

...lematic algal blooms. On hot, sunny days algae can cause massive, toxic blooms, poisoning huge areas of the sea with their waste products and killing fish, sea mammals such as whales, dolphins and seals, and even humans. Control of these blooms is vital to the health of the seas. "Research using cyanophag...

Function of new cancer genes discovered

...se tumours mainly occur on the head where they can cause serious malformations. People with this disease have a mutated form of the protein CYLD. Nijman and his colleagues used genetic screens to discover the molecular mechanism underlying cylindromatosis. Nijman's research revealed that the CYLD protein ...

Second messenger NAADP shows fast, dose-related impact on satiety cycle

...o release digestive enzymes in the pancreas and to cause satiety in the brain. "The more cholecystokinin that's produced, the more digestive enzymes are released and the more quickly your brain tells you that you're full ?or at least satisfied. Indeed, it also could be a potential drug for the treatment of...

Shark attack worries? Driving to the beach is more deadly

...ich have poisonous spines. They are more likely to cause harm than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their board...

New HIV drug candidate developed in Sweden

...ich have poisonous spines. They are more likely to cause harm than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their board...

Leprosy genome tells story of human migrations, French researchers report in Science

...agious, as people once widely believed, but it can cause permanent disability and disfigurement and is still a source of social stigma. The disease is treatable with a combination of antibiotics. The bacterium has long puzzled researchers because its genome is filled with an unusually high proportion of d...

Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research

...ich have poisonous spines. They are more likely to cause harm than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their board...

Climatologists discover deep-sea secret

...kens. Scientists predict that global warming could cause part of the Greenland ice sheet to melt, giving rise to increased levels of freshwater in the Atlantic Ocean. This could reduce the strength of the gulf stream, creating a cooler, dryer climate in Europe and North America. However, according to the ...

New vaccine means bye-bye to bacteria in the lung

Pseudomonas aeruginosa is a bacterium that can cause respiratory tract infections, which can be life threatening in patients who have cystic fibrosis. It is therefore important to develop a vaccine against this pathogen. Appearing online on 1 April 2005 in advance of print publication of the May issue ...

$5.1 billion would save 6 million children

...ery and asphyxia at birth, disorders that annually cause almost three-quarters of child deaths worldwide. The researchers calculate that a two-thirds reduction in child death can be accomplished by new resources that are easily within the capability of low-income countries and their international developme...

Research may provide new link between soft drinks and weight gain

...ices and cereals--has been thought to be a leading cause of obesity. A widely used sweetener derived from corn, high-fructose corn syrup is similar to sucrose (table sugar) in its composition, about half glucose and half fructose. Dr. Tschöp's lab used novel body composition analyzers that use magnetic re...

New miniaturised chip dramatically reduces time taken for DNA analysis

... different drugs to establish what damage they may cause to the DNA molecule of disease-causing microorganisms and of cells in patients. "The next step is to mass-produce the sensors", states Salvador Alegret, the director of research. "Mass production will allow costs to be reduced and the product to bec...

Chronic Sinus Infection Thought To Be Tissue Issue, Mayo Clinic Scientists Show It's Snot

Mayo Clinic researchers have found that the cause of chronic sinus infections lies in the nasal mucus -- the snot -- not in the nasal and sinus tissue targeted by standard treatment. The findings will be published in the August issue of Journal of Allergy and Clinical Immunology and are available o...

Survey reveals women and doctors aren't talking about HPV

...r has talked to them about cervical cancer and its cause - the human papillomavirus (HPV) - according to a ...r cancers, only cervical cancer has a single known cause - HPV. # Only 23 percent of women surveyed correctly identified HPV as the primary cause of cervical...

Antiretroviral Therapy May Prevent HIV Transmission From Breastfeeding Mothers To Infants

...nefits, however. Such levels may be high enough to cause adverse effects associated with the drugs, such as rash, neutropenia, and anemia, and to lead to the emergence of drug-resistant virus. For the second study, the researchers examined the ability of combination antiretroviral therapy to reduce HIV-1 ...

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