Volume 7 Issue 196
Published - 14:00 UTC 08:00 EST 15-Jul-2005 
Next Update - 14:00 UTC 08:00 EST 16-Jul-2005

Editor: Susan K. Boyer, RN
Vidyya.
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Asthma, allergies may reduce risk of brain cancer

Having asthma, hay fever or another allergic condition may reduce the risk of developing one fatal form of brain cancer, a new study suggests. more  

Mycobacterium avium complex (MAC) treatment can cause ocular toxicity

Ethambutol, a vital component of multidrug regimens for Mycobacterium avium complex (MAC) lung disease, can cause ocular toxicity if taken on a daily basis, according to a study in the second issue for July 2005 of the American Journal of Respiratory and Critical Care Medicine. The researchers recommended monthly visual acuity and color discrimination testing for patients taking doses of the drug greater than 15 to 20 milligrams per kilogram of body weight, those who receive the medication for longer than 2 months, and patients with renal insufficiency since the compound is cleared by the kidneys. more

Key to potential vaccine for COPD bacteria

Researchers believe that the acquisition and reasonably quick clearance of a bacterial strain called Moraxella catarrhalis from the lungs of chronic obstructive pulmonary disease (COPD) patients results in long-lasting, strain-specific protection from reacquisition and has important implications for vaccine development. The investigators assessed 104 adults with COPD for 81 months. They said that bacteria cause many of the exacerbations which characterize the disease and that such organisms, through chronic colonization, contribute to the airway inflammation that is the hallmark of the disease. more  

Vitamin D repletion regimen for CF patients did not work

The recently published vitamin D repletion regimen suggested by the Cystic Fibrosis Foundation's Consensus Panel on Bone Health for replacing the vitamin in cystic fibrosis (CF) patients has been called by researchers who tested it "strikingly ineffective." Out of 66 adults with CF, only 5 patients who had been treated with 50,000 international units of the vitamin per week for eight weeks had their serum levels corrected to the recommended degree. more

Salk scientists overturn a dogma of nerve cell communication  

Every neurobiology textbook invariably states that nerve cells communicate with each other through synapses, the specialized cell-cell contacts found at the end of the cells' threadlike extensions. In this week's journal Science, researchers at the Salk Institute for Biological Sciences and the University of California at San Diego report that nerve cells, or neurons, may not have to rely on traditionally defined synapses to "talk" to each other. more

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

Scientists have identified the first reported case in Asia of primate-to-human transmission of simian foamy virus (SFV), a retrovirus found in macaques and other primates that so far has not been shown to cause disease in humans. The transmission of the virus from a monkey to a human took place at a monkey temple in Bali, Indonesia, the researchers report in the July issue of the journal Emerging Infectious Diseases. Even though this particular virus jumping to humans may not prove dangerous, the scientists warn that the dense human and primate populations in Asia could lead to other primate-borne viruses jumping the species barrier and causing human disease. more

Ethical guidelines suggested for research that would put human stem cells in primates

Before conducting research that involves putting human stem cells into the brains of nonhuman primates such as monkeys or apes, scientists and oversight committees should consider a series of ethical criteria, according to a policy paper released in the July 15 issue of Science. more

 

Ethical guidelines suggested for research that would put human stem cells in primates