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Tag: "cases" at biology news

New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids

...go awry, there is increasing evidence that in some cases infections with viruses or bacteria may play a role. Now, a new study published in the June issue of Immunity provides evidence that bacterial infections induce a kind of self-recognition that may contribute to some autoimmune diseases such as multip...

Malaria killing a million a year

...at from the estimate of 300 million to 500 million cases annually that WHO has been using since 2001. "Current methods do not allow for a more precise estimate, given that malaria is most often not diagnosed with certainty, as well as the scarcity of reliable data from the communities where it occurs," WH...

Doctors should stop prescribing antibiotics for the common cold, review advises

...rites. "Physicians prescribe antibiotics in these cases out of habit and/or because they do not agree with the evidence," says Dr. Arroll. "Antibiotics do work for a minority of patients with purulent rhinitis, one out of five, so they may generalize this experience to their wider patient group." Dr. Nor...

Hepatitis C responds best to combo of ribavirin and interferon, study concludes

...s of cirrhosis. An additional estimated 25,000 new cases of HCV occur in the United States each year. Inte...effect was anemia, which occurred in 22 percent of cases of combination recipients and less than 1 percent of the interferon group. Other side effects that o...

A novel virus for croup

...s also investigated the occurrence of HCoV-NL63 in cases of respiratory disease where no other virus could be detected. Here, a strong relationship with the clinical symptoms associated with croup was apparent: 43% of the HCoV-NL63 positive patients with high HCoV-NL63 load and absence of co-infection had ...

Micro-molecule plays big role in birth defects

...nto the role of microRNAs in limb development. In cases where Dicer is not present in developing limb tissue, Harfe showed that microRNAs were not processed and limbs were visibly smaller. "Many of the birth defects we see in people are mimicked by the defects we've seen in this mouse model," said Xin Su...

Scientists show that tick-borne flaviviruses use a novel mechanism to evade host defenses

...ect people following a tick bite, but there are no cases of natural disease recorded. In the 1970s Langat was briefly used as a live vaccine against more virulent tick-borne encephalitis viruses in Russia but caused encephalitis complications in about 1 of every 10,000 people. Interferon, the body's first...

Mass production of human papillomavirus could lead to gains against cervical cancer

...ertain types of HPV are responsible for nearly all cases of cervical cancer, and other types contribute to about a quarter of head and neck cancers and some skin cancers. A more common, less virulent form of the virus causes genital warts. Using the new technique scientists can quickly produce a thousand ...

Monkeypox mystery: New research may explain why 2003 outbreak in the US wasn't deadly

An outbreak of 72 cases of monkeypox in the United States during the summe...tted to humans under natural conditions. The first cases of monkeypox reported in humans involved contact between humans and animals in Africa. The first ou...

AIDS expert says global strategy needed to combat feminization of HIV/AIDS

...arly 1980s, men accounted for almost 90 percent of cases in developed countries. In the United States from 1999 to 2003, the yearly increase in AIDS cases rose by 15 percent, but only by 1 percent in men. He says that now AIDS is having the most profound...

Researchers create infectious hepatitis C virus in a test tube

...nited States, and about 25 percent of liver cancer cases in the country are associated with HCV. Although about 85 percent of those who are infected develop chronic infection, the virus usually remains undetected for years, or even decades, until it causes advanced liver disease. ...

Brain size may depend upon how neural cells are cleaved

...macrocephaly. I would speculate that many of these cases are the outcome of some sort of impairment in the regulation of cell division, perhaps in the plane of division," said Tsai. "And with the possibility that neural stem cells may find therapeutic use, the role of G protein signaling in the differenti...

Defect in gene causes 'neuralgic amyotrophy'

...re of this more frequently occurring form - 2 to 4 cases per 100,000 persons - is not distinguishable from that of the heritable form. The attacks of pain are usually provoked by external factors such as vaccination, infection, operation, and even pregnancy or childbirth. By virtue of their genetic predi...

Bird samples from Mongolia confirmed as H5N1 avian flu

...ake. Their finding coincided with confirmations of cases of avian influenza in Russia and Kazakhstan. Karesh and Gilbert immediately traveled to the site with a team of Mongolian virologists, veterinarians, and public health officials. Approximately 100 dead birds were found at the site. The team--in...

Primate virus jumps species barrier to humans for first time in Asia

...effects of SFV on humans ?there are about 40 known cases of people being infected, through laboratory or zo...ugh bushmeat hunting in Africa. There are no known cases of human disease yet. However, Jones-Engel and her fellow researchers warn that there are other pri...

Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections

...e able to diagnose more than 90 percent of all the cases of viral respiratory infection, he says. The existence of such a test could encourage the development of improved therapies for respiratory viruses, Crowe says. Without a good diagnostic for a specific viral infection, drug companies don't have much...

A vaccine to kill tapeworm

...ountries, but even in the US there are around 1000 cases each year, mainly among immigrants. In central and South America, Asia and Africa, millions of people have symptoms of the disease. While humans are the main host for T. solium, pigs are the intermediate host, and an essential step in the tapeworm's...

Naturally occurring asbestos linked to lung cancer

... California Cancer Registry data to identify 2,908 cases of malignant mesothelioma diagnosed between 1988 a...umber of age- and gender-matched pancreatic cancer cases was selected (since pancreatic cancer has no known association to asbestos exposure). For both the m...

Several minute intermediate stage in virus-cell fusion discovered; opportunity for drug development

... for a significant amount of time and, in the rare cases in which the pore does not open, it fails to infect the cell at all. "It's like a space craft docking on a space station," said Young. "If you try to open the inner door before the pressures have equalized, you can tease it open a little bit but it ...

Squeezing out dune plants

...ommunities fully developed over five years, but in cases of moderate and high sea level rise, plant communities were too stressed to grow in many areas, leading to smaller dunes and an eventual breakdown of dune formation. In the higher water scenarios, the plant populations no longer provided windblocks, ...

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