A continuación: ARN regulador, descifrando la vitamina B12, la pérdida de biodiversidad, y la búsqueda de probióticos con habilidades de supervivencia especiales.
An outbreak of severe diarrhea in rural central Haiti has killed at least 135 people and sickened hundreds more who overwhelmed a crowded hospital on Thursday seeking treatment.
Health workers suspected the cause was cholera, but were awaiting tests.
Hundreds of patients lay on blankets i... Read More
The cells and tissues in our bodies grow, develop and interact in a highly complex, three-dimensional world. Likewise, the various microbial pathogens that invade our bodies and cause infectious disease interact with this complex 3-D tissue milieu. Yet the methods of culturing and studying human... Read More
Texas health officials have shut down a processing plant linked to contaminated celery that sickened at least six people this year, four of whom died, and led to the recall of all of the produce that passed through the plant since January.
SanGar Produce & Processing Co. issued the recall Wed... Read More
Scientists at The University of Nottingham and the Wellcome Trust Sanger Institute near Cambridge have pin-pointed the 72 molecular switches that control the three key stages in the life cycle of the malaria parasite and have discovered that over a third of these switches can be disrupted in som... Read More
When confronted with a virus, several cell types in the immune system go about producing interferons, which get the ball rolling, so to speak, and mobilize the innate immune system against the invader. Unfortunately for us, coronaviruses, which include SARS-CoV and many cold viruses, inhibit in... Read More
The 21st century is all about conserving energy. The push towards energy-efficient buildings, vehicles and lifestyles is both fashionable and necessary, but it’s also ironic. Our pattern of ever-increasing energy consumption is deeply rooted in our history, not just since the Industrial Revoluti... Read More
This episode: Using bacteria to recover precious metals like palladium!
For decades vaccines were a neglected corner of the drugs business, with old technology, little investment and abysmal profit margins. Many firms sold their vaccine divisions to concentrate on more profitable drugs. This troubled public-health experts because vaccines are a highly effective way ... Read More
Microbes living at the bottom of the Gulf of Mexico may consume far more of the gaseous waste from the Deepwater Horizon oil spill than previously thought, according to research carried out within 100 miles of the spill site.
A paper on that research, conducted before the Deepwater Horizon ri... Read More
So disease-causing bacteria in the body finally have multiplied to the point where their numbers are large enough to cause illness. What's next? They get out their "smart phones" and whisper "Let's roll!" That's how an article in ACS' monthly Chemical Reviews describes the substances — "smart ph... Read More
Whooping cough, also known as pertussis, has claimed the 10th victim in California, in what health officials are calling the worst outbreak in 60 years.
Since the beginning of the year, 5,978 confirmed, probable and suspected cases of the disease have been reported in California.
All of th... Read More
Scientists are hailing a breakthrough that could lead to one of medicine's holy grails - a cure for the common cold.
Researchers have found they can attach tiny studs of silver to the surface of harmless bacteria, giving them the ability to destroy viruses.
They have tested the silver-impr... Read More
So disease-causing bacteria in the body finally have multiplied to the point where their numbers are large enough to cause illness. What’s next? They get out their “smart phones” and whisper “Let’s roll!” That’s how an article in ACS’ monthly Chemical Reviews describes the substances — “smart ph... Read More
Some bacteria react to the cold by subtly changing the chemistry of their outer wall so that it remains pliable as temperatures drop. Scientists identified a key protein in this response mechanism a few years ago, but the question of how bacteria sense cold in the first place remained a mystery.... Read More
Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and Stony Brook University have discovered a key difference in the way human cells and Mycobacterium tuberculosis bacteria, which cause TB, deliver unwanted proteins — marked with a "kiss of death" sequence — to t... Read More
Bacteria have a natural ability to attach themselves to surfaces, both natural and synthetic. Once attached, they often work cooperatively to form biofilms, thin layers of bacterial colonies that can coat the surface of a medical device and introduce the risk of infection. As a result, orthopedi... Read More
Pseudomonas aeruginosa is one tough nut to crack, but a new paper sheds some light on how that cracking might be done, and adds to our knowledge of an opportunistic pathogen that strikes in homes and hospital wards every day.
Unfortunately for patients, P. aeruginosa is able to resist many ... Read More
A deadly attack of the bacteria Klebsiella Pneumoniae Carbapenemase (KPC), which has already killed 15 people and contaminated 135 Brazilian citizens has prompted around 20 hospitals to take serious measures to tackle its spread. Around 48 people are still hospitalized in 16 centers in the Feder... Read More