Word: bloodstream
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...right now they have only intriguing clues. The most popular hypothesis holds that the disease process starts when a protein called beta amyloid accumulates outside nerve cells, forming the deposits known as plaques. Among other things, plaques appear to impair the ability of neurons to absorb glucose from the bloodstream, generating an energy crisis inside the cell. A competing hypothesis maintains that Alzheimer's begins not with beta amyloid but with a protein called tau. Abnormal variants of this protein, say scientists, clutter the interiors of neurons with tangled filaments that disrupt cellular metabolism...
...that time, scientists across the U.S. were excited about a possible breakthrough treatment: soluble CD4. They knew that HIV does not infect T cells at random. It must first attach itself to a particular protein, called CD4, on the T cells' surface. Perhaps, researchers reasoned, if they flooded the bloodstream with free-floating CD4 molecules, the molecules would act as decoys and prevent HIV from infecting the T cells. Preliminary tests on viral samples grown under laboratory conditions showed that soluble CD4 worked beautifully...
...Vancouver that he could eliminate HIV from people in the later stages of the infection. Researchers know that after years of infection, there isn't a hiding place in the body that the virus hasn't penetrated. A cure must do much more than clear HIV from the bloodstream. It must remove the virus from the lymph nodes, the brain, the spinal fluid, the male's testes and everywhere else it may be hiding. Today's combination therapies work in the blood, but they don't reach into the brain or the testes very well...
...bemoan the corruption of the season if you must, but remember: that cubic zirconia ring isn't some needless trinket; it is a corpuscle in the bloodstream of a mighty economic engine. By the way, wouldn't a subscription to a lively, informative Weekly Newsmagazine make a splendid holiday offering...
...convenient and safer way to deliver relief. Taking their cue from the birth-control implant Norplant, which is inserted under the skin and provides long-term contraceptive protection, researchers have packed a button-size insert with a powerful narcotic. Implanted under the skin, the device releases analgesic into the bloodstream continuously for three months. Tests on cancer patients will begin within a year...