Toxins News and Research

RSS

Cholera toxin binds differently to intestinal cells than previously thought

The likelihood of becoming seriously ill from cholera depends on your blood group. It is possible to find a new remedy for the feared illness by studying the molecular structure in the toxin in the cholera bacteria.

28 Aug 2012

Researcher describes structure and function of tuberculosis efflux pump regulator

Edward Yu took note of the facts - nearly 2 million deaths each year, 9 million infected each year, developments of multidrug-resistant, extensively drug-resistant and now totally drug-resistant strains - and decided to shift his research focus to tuberculosis.

23 Aug 2012

Clinical trial to test whether fecal transplantation is effective in treating relapsing C. difficile

For patients with Clostridium difficile (C. difficile), a persistent and potentially deadly bacterial illness, severe diarrhea, abdominal pain, nausea and vomiting are an everyday event. This particularly virulent infection is prone to recurrence, even after multiple courses of expensive antibiotics, and treatment options are limited for patients who continually relapse or develop antibiotic resistance.

22 Aug 2012

Researchers identify molecular and protein signatures that predict HCV virus-induced liver injury

Researchers have discovered molecular and protein signatures that predict rapid onset of liver damage in hepatitis C patients following a liver transplant. The markers appeared soon after transplant and well before clinical evidence of liver damage.

17 Aug 2012

Microcystin present in Canadian lakes in every province

Nutrient pollution, one of the greatest threats to our freshwater resources, is responsible for the algal blooms that blanket our lakes and waterways in summer months. Large blooms of cyanobacteria ('blue green algae') can cause fish kills, increase the cost of drinking water treatment, devalue shoreline properties, and pose health risks to people, pets, and wildlife. A new paper just published in the Canadian Journal of Fisheries and Aquatic Sciences shows that microcystin, a toxin produced by cyanobacteria, is present in Canadian lakes in every province.

16 Aug 2012

HSF1 increases expression of chaperones and supports cancer metastasis

Whitehead Institute researchers have found that increased expression of a specific set of genes is strongly associated with metastasis and death in patients with breast, colon, and lung cancers.

3 Aug 2012

Slippery technology prevents harmful bacterial slime from forming on surfaces

Biofilms may no longer have any solid ground upon which to stand. A team of Harvard scientists has developed a slick way to prevent the troublesome bacterial communities from ever forming on a surface. Biofilms stick to just about everything, from copper pipes to steel ship hulls to glass catheters. The slimy coatings are more than just a nuisance, resulting in decreased energy efficiency, contamination of water and food supplies, and-especially in medical settings-persistent infections. Even cavities in teeth are the unwelcome result of bacterial colonies.

31 Jul 2012

New study sheds light on exactly how cigarette smoke causes osteoporosis

Almost 20 years after scientists first identified cigarette smoking as a risk factor for osteoporosis and bone fractures, a new study is shedding light on exactly how cigarette smoke weakens bones. The report, in ACS' Journal of Proteome Research, concludes that cigarette smoke makes people produce excessive amounts of two proteins that trigger a natural body process that breaks down bone.

28 Jul 2012

Researchers decode deadly 2011 E. coli outbreak in Germany

The secret to the deadly 2011 E. coli outbreak in Germany has been decoded, thanks to research conducted at Michigan State University.

27 Jul 2012

Vanderbilt researchers receives new $2.1M grant to develop microbrain bioreactor

Take a millionth of a human brain and squeeze it into a special chamber the size of a mustard seed. Link it to a second chamber filled with cerebral spinal fluid and thread both of them with artificial blood vessels in order to create a microenvironment that makes the neurons and other brain cells behave as if they were in a living brain. Then surround the chambers with a battery of sensors that monitor how the cells respond when exposed to minute quantities of dietary toxins, disease organisms or new drugs under development.

25 Jul 2012

FDA's approval of Kyprolis offers hope to myeloma patients, says IMF

The International Myeloma Foundation (IMF) - the oldest and largest foundation dedicated to improving the life and care of myeloma patients - says today's Food and Drug Administration approval of Onyx's Kyprolis (carfilzomib) offers hope to myeloma patients who have run out of options when available therapies have stopped working.

21 Jul 2012

New assay can identify rare cancerous cells within mixed populations

Rare cells can be identified within mixed cell populations with near perfect accuracy using a detection technique devised by research teams led by Robert Wieder, MD, PhD, at the University of Medicine and Dentistry of New Jersey-New Jersey Medical School and Rajan Kumar, MD, PhD, at Genome Data Systems in Hamilton, N.J. This technique may facilitate cancer diagnosis, which often relies on the detection of rare cancerous cells in tiny amounts of biopsy tissue or fluid.

12 Jul 2012

New vaccine candidate against leading cause of hospital-acquired infections

Researchers at Brigham and Women's Hospital (BWH) have discovered a new vaccine candidate for the bacterium Pseudomonas aeruginosa taking advantage of a new mechanism of immunity.

7 Jul 2012

Toxins and cell death: Interview with Professor Denise Montell

There are multiple kinds of cell death. Cells can undergo programmed cell death, which is a series of events that undergoes a predictable order at certain times during development.

6 Jul 2012

Study shows cells from different Parkinson’s patients have unique drug responses

Researchers have taken a step toward personalized medicine for Parkinson's disease, by investigating signs of the disease in patient-derived cells and testing how the cells respond to drug treatments.

5 Jul 2012

Extensive health benefits associated with milk consumption

Milk is designed by nature as a complete food. Its composition has evolved with each mammalian species to reflect the particular environmental conditions and evolutionary demands of the young of that species. Humans have exploited this valuable resource since the dawn of the agricultural revolution through domestication of animals, in particular the cow. We have developed the technology to preserve milk during times of abundance and this has resulted in an array of foods now common in the diets of most human cultures.

4 Jul 2012

Study examines how cells exploit gene sequences to cope with toxic stress

Toxic chemicals wreak havoc on cells, damaging DNA and other critical molecules. A new study from researchers at MIT and the University at Albany reveals how a molecular emergency-response system shifts the cell into damage-control mode and helps it survive such attacks by rapidly producing proteins that counteract the harm.

4 Jul 2012

Higher waist circumference, obesity improve health outcomes in heart failure patients

A slim waist and normal weight are usually associated with better health outcomes, but that's not always the case with heart failure patients, according to a new UCLA study.

4 Jul 2012

Global warming may stimulate growth of cyanobacteria

Cyanobacteria are among the most primitive living beings, aged over 3,500 million years old. These aquatic microorganisms helped to oxygenate the earth-atmosphere. At present their populations are increasing in size without stopping. It appears that global warming may be behind the rise in their numbers and may also lead toan increase in the amount of toxins produced by some of these populations.

4 Jul 2012

Cells close to death from toxin exposure can survive when toxins are removed

The vast majority of cells that appear to be on a one-way track to death after exposure to toxins can bounce back completely after those toxins are removed, Johns Hopkins scientists report in a new study. The finding, published in the June 15 issue of Molecular Biology of the Cell, is not only a testament to the indomitable cellular spirit, but could also offer some practical insight on how to save dying tissues after heart attacks or strokes as well as prevent cancer in cells transiently exposed to toxins.

3 Jul 2012