Your canine friend can use its highly evolved sense of smell to pick out blood samples from people with cancer with almost 97 per cent accuracy, a finding that can lead to new low-cost and non-invasive screening approaches for the disease, finds a study. Dogs have smell receptors 10,000 times more accurate than humans’, making them highly sensitive to odours we cannot perceive. “Although there is no cure for cancer, early detection offers the best hope,” said lead researcher Heather Junqueira, at BioScentDx, a US-based healthcare company. ” A highly sensitive test for detecting cancer could save thousands of lives and change the way the disease is treated,” he said. For the study, the team used a form of clicker training to teach four beagles to distinguish between normal blood serum and samples from patients with malignant lung cancer. Although one beagle—aptly named Snuggles—was unmotivated to perform, the other three correctly identified lung cancer samples 96.7 per cent times and normal samples 97.5 per cent times. “This work is very exciting because it paves the way for further research along two paths, both of which could lead to new cancer-detection tools,” said Junqueira. “One is using canine scent detection as a screening method for cancers, and the other would be to determine the biologic compounds the dogs detect and then design cancer-screening tests based on those compounds,” he said. The results will be presented at the American Society for Biochemistry and Molecular Biology annual meeting in Florida. The team plans to use canine scent detection to develop a non-invasive way of screening for cancer and other life-threatening diseases.

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The presence of different strains of grass pollen in the atmosphere can help predict when hay fever and asthma could strike, researchers have found.

A team led by the University of Queensland (UQ) researchers, tracked grass pollen for seasonal variations and found it was released into the atmosphere later in areas further from the equator.

“Using this method, we may be able to better predict when allergenic pollen is present and allow people affected by asthma, chronic obstructive pulmonary disease (COPD) and rhinitis to more effectively manage their condition,” said Nicholas Osborne, Associate Professor at UQ’s School of Public Health.

“(And) with the advent of personalized medicine, more and more people are becoming aware of which allergen is responsible for their allergy,” Osborne said.

He said the research would help allergy sufferers prepare for the hay fever season and doctors to prescribe more personalised treatments.

“People who fail to manage their asthma are at greater risk of asthma attack and being forced to visit hospital emergency departments,” Osborne said.

“Having a more accurate forecast of when a patient is at risk will allow people to better manage their disease.”

Scientists hope to expand on the research to create a unique profile of each grass pollen species to determine the most harmful strains.

For this, they are examining hospital and GP records and seeing if demand for these services involving asthma and rhinitis correlates with the presence of one grass species over another.

“Eventually—possibly within three to four years—we hope this will allow us to produce a better forecast of when and where exposure to pollen occurs,” Osborne added.

 

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