Category: Microbiology
23 December 1997
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ScienceNOW(Science - AAAS)
Toxic Microbe Befuddles Rats
To the victims of Pfiesteria, a toxic marine microorganism that has killed scads of fish and sickened some people from Delaware to the Gulf of Mexico, add laboratory rats. In...
5 December 1997
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ScienceNOW(Science - AAAS)
A Molecular Inspector
Like any production line, a cell's protein-forming machinery occasionally makes mistakes. When it does, molecules called ubiquitins mark the duds for destruction. A paper in today's Science describes a protein...
3 December 1997
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ScienceNOW(Science - AAAS)
A Shockingly Versatile Vaccine
For vaccines to teach the body to recognize a pathogen, they must insert a diagnostic fragment into macrophages and other cells of the immune system. Viruses can do the job,...
25 November 1997
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ScienceNOW(Science - AAAS)
Herpes Virus Linked to Multiple Sclerosis
A new study has yielded strong evidence linking a strain of herpes virus to multiple sclerosis (MS). More than 70% of patients in the study with the most common form...
24 November 1997
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ScienceNOW(Science - AAAS)
Prion Accomplices Found
Scientists have located two possible receptors for the so-called prion protein (PrP) believed to be at fault in fatal neurological conditions such as "mad cow disease," Creutzfeldt-Jakob disease in humans,...
14 November 1997
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ScienceNOW(Science - AAAS)
A Vaccine Stronger Than the Stomach
Researchers have developed the first oral vaccine against botulism, a bacterial infection that can lead to paralysis and death. The advance, reported in this month's Infection and Immunity, could someday...
25 September 1997
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ScienceNOW(Science - AAAS)
Pollution-Eating Bacteria that Dress for Success
Bacteria have long promised to be a powerful ally for cleaning up sites contaminated by pesticides and chemical weapons. But the bacterial enzymes that can break down the toxic chemicals...
15 September 1997
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ScienceNOW(Science - AAAS)
The Man Who Beat Yellow Fever
Saturday was the birthday of Walter Reed, an American medical researcher born in 1851 who is celebrated for his work on yellow fever. During the Spanish-American War, more soldiers had...
15 September 1997
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ScienceNOW(Science - AAAS)
Hepatitis Virus Knocks Out Tumor Suppressor
The hepatitis virus can knock out one copy of a tumor-suppressor gene and make seemingly healthy liver cells much more prone to uncontrolled, cancerous growth, researchers report in today's issue...
9 September 1997
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ScienceNOW(Science - AAAS)
The Flu Pandemic That Might Have Been
This summer, a flu strain unlike any that has infected humans before appears to have jumped directly from birds to a human, killing a Hong Kong boy. The event rang...
29 August 1997
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ScienceNOW(Science - AAAS)
A Brand-New Test Tube World
ARNHEM, THE NETHERLANDS--A test tube teeming with strangely shaped bacteria suggests that diversity rapidly blooms in a world of untapped resources. Experts say the experiment, described here this week at...
27 August 1997
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ScienceNOW(Science - AAAS)
Rabbit Virus Strikes New Zealand
MELBOURNE, AUSTRALIA--An outbreak of rabbit calicivirus disease (RCD) in New Zealand was confirmed yesterday by the New Zealand Ministry of Agriculture (MAF). Officials suspect the virus may have been intentionally...
26 August 1997
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ScienceNOW(Science - AAAS)
Primitive Archezoa Dethroned
CHAFFEY'S LOCKS, ONTARIO--Since ancient fossils are scarce, scientists trying to understand the early evolution of life turn to single-celled organisms that appear very primitive. Now it turns out that two...
20 August 1997
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ScienceNOW(Science - AAAS)
Vaccine Beats Blood-Sucking Grub
A team of Australian researchers has demonstrated that a vaccine could help farm animals fight off parasitizing insects. If the approach works, it may cut down on the use of...
19 August 1997
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ScienceNOW(Science - AAAS)
A World War on Malaria
HYDERABAD, INDIA--A plan to launch an international attack on malaria is beginning to pick up steam. The Multilateral Initiative on Malaria (MIM) can bank on $2 million this year from...
11 August 1997
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ScienceNOW(Science - AAAS)
The Mosquito Connection
This month marks the 100th anniversary of the discovery by Sir Ronald Ross that mosquitoes transmit malaria. The popular view had been that malaria was caused by bad air (mal...
11 August 1997
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ScienceNOW(Science - AAAS)
Bacteria Beat Wheat Blight
ROCHESTER, NEW YORK--The fungus Fusarium graminearum can devastate a wheat crop, killing plants and contaminating the survivors with a toxin that sickens humans and animals. Without any effective way to...
6 August 1997
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ScienceNOW(Science - AAAS)
Mold That Made History
Today is the birthday of Alexander Fleming, a Scottish bacteriologist born in 1881 who accidentally discovered the antibiotic penicillin, one of the most important medicines of the 20th century. A...
5 August 1997
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ScienceNOW(Science - AAAS)
Sabotaging Bacterial Resistance
The rise of bacteria resistant to antibiotics has left researchers scrambling to develop more powerful drugs. But in the latest issue of the Proceedings of the National Academy of Sciences,...
2 July 1997
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ScienceNOW(Science - AAAS)
Tracking Microbial Killers
The world's hardiest microbes--those that have become resistant to traditional antibiotics--are now under surveillance. Medical researchers have launched a new program, called Sentry, that links up 72 hospitals and clinics...
27 June 1997
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ScienceNOW(Science - AAAS)
Monkey Mono
Kiss the wrong person and you might get mononucleosis, which could mean days laid up in bed with swollen glands and fatigue. For monkeys, however, the Epstein-Barr virus (EBV) responsible...
13 May 1997
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ScienceNOW(Science - AAAS)
Baltimore to Head Caltech
In a surprising move, the California Institute of Technology announced today that it has named Nobel Prize-winning virologist David Baltimore as its new president. "It's a great appointment for Caltech...
8 May 1997
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ScienceNOW(Science - AAAS)
Space Bugs Seem Tame
MIAMI BEACH--Russia's Mir space station has had its share of problems, from fires to dwindling oxygen supplies. But astronauts there can now worry less about one potential nightmare: the prospect...
7 May 1997
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ScienceNOW(Science - AAAS)
TB Drug Shows Promise in Mice
MIAMI BEACH--A new drug has been shown to cure laboratory mice of tuberculosis much more quickly than standard treatments. If the treatment, described here this week at the annual meeting...
5 May 1997
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ScienceNOW(Science - AAAS)
Recipe to Stop Chlamydia: Mother's Milk?
MIAMI--A fat molecule found in human breast milk may someday be used to prevent the transmission of chlamydia and perhaps other sexually transmitted diseases. The findings, presented here today at...
1 May 1997
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ScienceNOW(Science - AAAS)
A Baker's Dozen Win Top Science Prizes
WASHINGTON, D.C.--National Science Foundation director Neal Lane announced here yesterday the 1997 recipients of the National Medal of Science, the nation's highest scientific honor. Also announced were winners of the...
24 April 1997
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ScienceNOW(Science - AAAS)
Defending the Urinary Tract
Scientists have developed a genetically engineered vaccine that prevents urinary tract infections (UTIs) in mice. The findings, reported in tomorrow's issue of Science,* hold out the hope of diminishing a...
14 April 1997
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ScienceNOW(Science - AAAS)
Preventing Frozen Fish
Fish living in waters near the North and South Poles separately evolved nearly identical antifreeze proteins to keep their blood and organs from freezing. Moreover, the Antarctic species apparently acquired...
11 April 1997
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ScienceNOW(Science - AAAS)
Beginnings of a Rout
In one of the greatest moments in modern medical science, American microbiologist Jonas Salk on 12 April 1955 pronounced his newly invented polio vaccine safe and effective in almost 90%...
31 March 1997
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ScienceNOW(Science - AAAS)
Bacterial Trojan Horse Against Fatal Disease
Scientists have devised a clever form of bug-to-bug combat to fight Chagas' disease, a potentially fatal muscle infection transmitted by the aphidlike kissing bug. The new weapon is a bacterium,...
24 March 1997
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ScienceNOW(Science - AAAS)
Asexual Reproduction Catches On
Asexual reproduction is usually considered a way of life--an evolutionary choice a species makes when the drawbacks of sex outweigh its long-term benefits. But recent research has shown that in...
24 March 1997
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ScienceNOW(Science - AAAS)
Flu Virus Nipped in the Bud
For many viruses, infiltrating a cell and replicating is only half the battle. Copies of the virus must then escape to infect other cells. Some viruses explode out of a...
21 March 1997
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ScienceNOW(Science - AAAS)
Killer Flu Virus Found
Molecular sleuthing by military pathologists has exhumed the first fragments of the genetic blueprint of the virus behind the flu pandemic of 1918, which killed 20 million to 40 million...
22 January 1997
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ScienceNOW(Science - AAAS)
A Deadly Peek at Fungal Medusa
If looks can kill, why not try look-alikes? Scientists have used a molecular imprint--something akin to a plaster cast--of a fungus-killing compound produced by yeast to make a protein that...
10 January 1997
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ScienceNOW(Science - AAAS)
The Daily Grind of Hourly Bacteria
Humans and other organisms that live for days or years have countless 24-hour cycles of chemical and biological activity. You'd think these circadian rhythms would be absent in bacteria that...
5 December 1996
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ScienceNOW(Science - AAAS)
Bacterial Junkies: A New Threat?
London--Talk about a transformation worthy of Superman. In the St. George's Hospital here, a mild-mannered bacterium most people carry without harming their health turned into a dangerous variant that not...
22 November 1996
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ScienceNOW(Science - AAAS)
Hope to Prevent Bacterial Baby-Killer
A new vaccine may prevent dangerous infections in infants and their mothers. A vaccine against group B streptococcus (GBS)--which causes serious infections in nearly two of 1000 newborns and kills...
15 November 1996
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ScienceNOW(Science - AAAS)
Dangerous Quick-Change Artists
Bacteria have a penchant for reinventing themselves, speedily adapting to new hosts, new conditions, and new antibiotic countermeasures. Now scientists have uncovered what may be a secret of that versatility,...
7 November 1996
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ScienceNOW(Science - AAAS)
Sugar-Coated Killer
The notorious "flesh-eating" bacterium appears to sweet-talk its way deep into vulnerable tissues. A report in the 7 November issue of the Journal of Clinical Investigation suggests that a coating...
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