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E-cigarettes may lead to accumulation of fat in the liver

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WASHINGTON — Using e-cigarettes may lead to an accumulation of fat in the liver, a study of mice exposed to the devices suggests.

The research was presented Sunday, March 18, at ENDO 2018, the Endocrine Society’s 100th annual meeting in Chicago, Ill.

“The popularity of electronic cigarettes has been rapidly increasing in part because of advertisements that they are safer than conventional cigarettes. But because extra fat in the liver is likely to be detrimental to health, we conclude that e-cigarettes are not as safe as they have been promoted to consumers,” said lead author Theodore C. Friedman of Charles R. Drew University of Medicine and Science in Los Angeles, Calif. “This has important public health and regulatory implications.”

E-cigarettes contain nicotine, which Dr Friedman and other researchers have reported is associated with non-alcohol fatty liver diseases. However, the long-term effects of e-cigarettes on liver disease, diabetes, heart disease or stroke are unknown.

In the 12-week study, Friedman and colleagues studied mice missing the gene for apolipoprotein E, which makes them more prone to developing heart disease and fat in the liver. All of the mice were fed a diet relatively high in fat and cholesterol.

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One group of mice was put in a chamber that exposed them to e-cigarette aerosol, so that their blood nicotine levels were similar to that of smokers and e-cigarette users. A second group of mice were exposed to saline aerosol.

The researchers collected liver samples, and looked at genes in the liver affected by e-cigarettes using a technique called RNA sequence analysis. They found changes in 433 genes that were associated with fatty liver development and progression in the mice exposed to e-cigarettes.

The researchers also found that genes related to circadian rhythms (the body clock) were changed in mice exposed to e-cigarettes. Circadian rhythm dysfunction is known to accelerate the development of liver disease including fatty liver diseases.

“Our experimental results will provide support to policymakers and federal and state regulatory bodies to take preventive measures to stop the increasing use of e-cigarettes among both children and adults,” Friedman said.

With Agency Inputs

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Diabetes drug might ease heart failure risk

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A new research has showed that the diabetes drug Farxiga might do double-duty for patients, helping to ward off another killer, heart failure.

According to the findings were published in the New England Journal of Medicine to coincide with their presentation at the annual meeting of the American Heart Association in Chicago, Type 2 diabetics who took Farxiga saw their odds of hospitalization for heart failure drop by 27 percent compared to those who took a placebo.

Farxiga is a type of drug called a SGLT2 inhibitor. The compound is called dapagliflozin.

The study included more than 17,000 type 2 diabetes patients aged 40 and older. Nearly 7,000 had heart disease and more than 10,000 had numerous risk factors for heart disease, Wiviott’s group said.

Patients were randomly assigned to take a dummy placebo pill or 10 milligrams of Farxiga each day.

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“When it comes to helping our patients control and manage blood glucose, the ‘how’ appears to be as important [as] the ‘how much,” said study author Dr Stephen Wiviott, a cardiovascular medicine specialist at Brigham and Women’s Hospital in Boston.

“When choosing a therapy, trial results like these can help us make an informed decision about what treatments are not only safe and effective for lowering blood glucose but can also reduce risk of heart and kidney complications,” Wiviott said in a hospital news release.

Taking the drug did not reduce the risk of heart attack, stroke and cardiovascular-related death, the research team noted. However, patients who took the drug did see healthy declines in their blood sugar levels, plus an added bonus: a 27 percent decrease in their risk of hospitalization for heart failure.

Their risk of kidney failure and death from kidney failure also fell, researchers noted.

Two other recent studies of this class of drugs show that they “robustly and consistently improve heart and kidney outcomes in a broad population of patients with diabetes,” Wiviott noted.

With Inputs from HealthDay

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