Bacterial News and Research

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Scientists present 'moving' theory behind bacterial decision-making

Biochemists at North Carolina State University have answered a fundamental question of how important bacterial proteins make life-and-death decisions that allow them to function, a finding that could provide a new target for drugs to disrupt bacterial decision-making processes and related diseases.

24 Nov 2008

Discovery of new species of bacterium that causes leprosy

A new species of bacterium that causes leprosy has been identified through intensive genetic analysis of a pair of lethal infections, a research team reports in the December issue of the American Journal of Clinical Pathology.

24 Nov 2008

Scientists identify blood component that turns anthrax bacteria virulent

Scientists from the Scripps Research Institute have discovered the key chemical that signals Bacillus anthracis , the bacterium that causes anthrax, to become lethal.

21 Nov 2008

Long-term use of a macrolide antibiotic reduce COPD exacerbations, raise questions

Long-term use of a macrolide antibiotic may reduce the frequency of exacerbations in patients with moderate to severe chronic obstructive pulmonary disease (COPD) by as much as 35 percent, according to a London-based study.

21 Nov 2008

Researchers reveal a new aspect of tumor development

The DNA in our cells is constantly under assault from oxygen, the sun's radiation and environmental stresses.

20 Nov 2008

Why are so many infectious diseases jumping from animals to humans?

Why do we have so little capacity to predict epidemics, or avoid them? Some answers, and possible solutions, can be found in the first trench-to-bench guide to wild primate infectious diseases, published Nov. 17 in the Yearbook of Physical Anthropology.

18 Nov 2008

Antibiotics can cause pervasive, persistant changes to microbiota in human gut

Using a novel technique developed by Mitchell Sogin of the Marine Biological Laboratory (MBL) to identify different types of bacteria, scientists have completed the most precise survey to date of how microbial communities in the human gut respond to antibiotic treatment.

18 Nov 2008

Research looks at human gut when exposed to widely used antibiotic ciprofloxacin

We are always being told by marketers of healthy yogurts that the human gut contains a bustling community of different bacteria, both good and bad, and that this balance is vital to keeping you healthy.

18 Nov 2008

Targanta Therapeutics announces posting of briefing documents for review of FDA

Targanta Therapeutics Corporation announced today that the U.S. Food and Drug Administration (FDA) has posted on its website briefing documents for the November 19, 2008 Anti-Infective Drugs Advisory Committee (AIDAC) meeting.

18 Nov 2008

Gut check reveals vast multicultural community of bugs in bowels

Mention the phrase "diverse ecosystem," and it conjures images of tropical rainforests and endangered coral reefs.

18 Nov 2008

Scientists discover new cause of fatal brain injury from acute viral meningitis

In a November 16 advance, online publication of the journal Nature, the researchers say their discovery revamps common beliefs about how such potentially lethal infections may be ravaging the brain and suggests the possibility of new treatments.

17 Nov 2008

First-ever glimpse of the cell-wall structure in three dimensions

The bacterial cell wall that is the target of potent antibiotics such as penicillin is actually made up of a thin single layer of carbohydrate chains, linked together by peptides, which wrap around the bacterium like a belt around a person, according to research conducted by scientists at the California Institute of Technology (Caltech).

17 Nov 2008

Scientists discover how certain antibiotics kill bacteria

A series of genetic clues led a team of Boston University biomedical engineers to uncover exactly how certain antibiotics kill bacteria.

17 Nov 2008

Microbial population of raw milk found to be more complex than previously thought

Raw milk is illegal in many countries as it can be contaminated with potentially harmful microbes.

16 Nov 2008

Breakthrough in cellular analysis

Like skilled assassins, many diseases seem to know exactly what types of cells to attack.

16 Nov 2008

Breakthrough in cell-type analysis offers new ways to study development and disease

Like skilled assassins, many diseases seem to know exactly what types of cells to attack. While decimating one cadre of cells, diseases will inexplicably spare a seemingly identical group of neighbors. What makes cells vulnerable or not depends largely on the kinds and amounts of proteins they produce - their 'translational profile,' in the lingo of molecular biology. For this reason, scientists have struggled to parse the subtle molecular differences among the hundreds of specialized cell types that are tangled together in tissues like the brain.

13 Nov 2008

Without enzyme, biological reaction essential to life takes 2.3 billion years

All biological reactions within human cells depend on enzymes. Their power as catalysts enables biological reactions to occur usually in milliseconds. But how slowly would these reactions proceed spontaneously, in the absence of enzymes - minutes, hours, days? And why even pose the question?

12 Nov 2008

Medicine, math and engineering combine to reveal how sepsis and less severe infections occur

It's a leading cause of death, but no one knows for sure how and why it happens. It's a major source of health care costs, adding days or weeks to the hospital stays and lost work time of millions of people. But no one fully understands how best to fight it.

11 Nov 2008

New technology to control the motion of bacteria that produce cellulose - biomaterial and medical implant potential

Two Virginia Tech engineers have put bacteria to work as tiny weavers of biomaterials and medical implants.

11 Nov 2008

New analysis of the mechanisms that drive evolution in viruses and bacteria

It sounds like a science fiction movie: A killer contagion threatens the Earth, but scientists save the day with a designer drug that forces the virus to mutate itself out of existence.

11 Nov 2008