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Health Rounds - Microplastics can contribute to drug resistant bacteria

Health Rounds - Microplastics can contribute to drug resistant bacteria

According to new research, microplastics can cause bacteria to become resistant.

Researchers from Boston University said that E. coli bacteria exposed in test tubes to microplastics became resistant to several types of antibiotics commonly used. The report was published on Tuesday in Applied and Environmental Microbiology.

In a press release, Neila Gross, the study leader explained that these tiny bits of plastic provide a surface to which bacteria can attach and colonize. They create a biofilm, a sticky substance which acts as a shield to protect the bacteria and keep them firmly affixed.

Gross stated that "we found the biofilms on the microplastics are thicker and stronger than other surfaces, such as glass," which prevents antibiotics from penetrating through the shield.

Researchers found that even after removing the microplastics from the test tubes the bacteria still retained their ability to form biofilms.

In a press release, coauthor Muhammad Zaman stated that plastics do more than provide a surface on which bacteria can adhere. They also lead to the development and spread of resistant organisms.

Researchers said that the findings were especially alarming for those living in areas of high density and poverty, such as refugee camps, where plastic waste accumulates and bacterial infection spreads easily.

The researchers said that such environments should be checked for antibiotic-resistant bacteria, viruses and microplastics.

Less dietary butter leads to fewer deaths

According to data from an extensive study, adults who use plant-based oils in place of butter are less likely to die from cancer, heart diseases, or other causes.

Researchers tracked 221,000 health professionals over a period of 33 years. All participants were healthy when the study began. They found that those with the highest butter consumption had a higher mortality rate of 15% compared to those with the lowest intake.

Researchers reported that those who consumed the most total plant-based oil had a lower risk of death from any cause, during the study. This was presented at the American Heart Association's EPI/Lifestyle scientific sessions in New Orleans.

In an email, Dr. Yu Zhang of the Harvard T.H. Chan School of Public Health, Boston, said via email. "Instead of reducing butter consumption even modestly and replacing it with oil-based plant products, can provide significant health benefits over the long term."

Each 10-gram reduction in butter consumption and each increase in plant-based oil was associated with a significant decrease in the risk of dying from cancer, heart disease or any other cause. These data were also published in the Journal of the American Medical Association.

The study is not a randomised trial, and therefore cannot prove that deaths are due to diet choices. An accompanying editorial points out that, even for participants with poor diets, butter and plant-based oils are associated with lower mortality.

The editorial stated that "this suggests that substituting butter with plant-based oil may offer meaningful benefits to health even when dietary patterns are less than optimal."

WILDFIRE SMOKE CAN IMPAIR SKIN PROBLEMS

Doctors from San Francisco reported that short-term exposure to wildfire pollution was associated with an increase in acne clinic visits and prescriptions of acne medication by pediatric patients. This finding was presented at the American Academy of Dermatology's annual meeting held in Orlando.

After the Camp Fire of 2018, researchers tracked California residents to see if they had increased their doctor visits for acne vulgaris or acne rosacea. They found that the increase began five weeks after it started.

Three weeks after the fire began, the number of adult acne clinic visits increased, but this increase was not statistically significant.

The same team of researchers had found previously that short-term air pollution associated with wildfires was linked to an increase in clinic visits due to atopic skin dermatitis or psoriasis.

They concluded that the current study, which shows a similar effect on acne, supports their hypotheses that wildfire smoke is likely to affect most, if no all, inflammatory diseases of the skin. (Reporting and editing by Bill Berkrot; Additional reporting by Shawana Allyne Morris; Reporting by Nancy Lapid)

(source: Reuters)