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Certain antibiotics may cause aortic aneurysm, FDA warns

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The US Food and Drug Administration warned that the benefits of fluoroquinolone antibiotics do not outweigh the risks — which include aortic aneurysm — for certain patients, according to the latest research. The research is based on reports of patient problems and on studies published between 2015 and 2018.

Fluoroquinolone antibiotics are often used to treat serious respiratory infections, pneumonia, urinary tract infection, and even plague and exposure to anthrax.They include drugs sold under the names ciprofloxacin (Cipro), gemifloxacin (Factive), levofloxacin (Levaquin), moxifloxacin (Avelox), norfloxacin (Noroxin) and ofloxacin (Floxin), CNN wrote.

Patients take them orally or through injection.

 

The drugs may cause aortic aneurysm, a bulge in an artery that can grow and burst, causing dangerous or fatal bleeding.

Patients most at risk for an aortic aneurysm after taking these antibiotics are the elderly, those with high blood pressure, people who have a history of blockages of the aorta or other blood vessels, and those who have genetic conditions like Marfan syndrome or Ehlers-Danlos syndrome.

“Although the risk of aortic aneurysm or dissection is low, we’ve observed that patients are twice as likely to experience an aortic aneurysm or dissection when prescribed a fluoroquinolone drug,” FDA Commissioner Dr. Scott Gottlieb said in a statement.

“For patients who have an aortic aneurysm or are known to be at risk of an aortic aneurysm, we do not believe the benefits outweigh this risk, and alternative treatment should be considered.”

For patients who don’t fall into these risk categories, fluoroquinolones may still be a good option. They have been helping patients with bacterial infections for more than 30 years.

The FDA is requiring that a warning about these risks be added to prescribing information and to patient medication guides.

In July, the agency sent a notice that these drugs may significantly decrease blood sugar and negatively impact mental health. In 2016, the FDA said that the drugs may have a disabling side effect on muscles, nerves, joints and the central nervous system and should be restricted for use in some simpler infections.

The FDA said it will continue to monitor for any new safety concerns associated with the antibiotics.

“The FDA remains committed to keeping the risk information about these products current and comprehensive and will continue to update the public,” Gottleib said.

If you are in one of these at risk categories and are taking one of these antibiotics, experts recommend talking to your doctor about it but continuing to take the medication.


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Health

Balanced protein intake better for health

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Researchers suggest that excessive consumption of protein for building muscle mass could have a negative impact on the body. However, wide-range of protein is best to maintain balance. Amino acids have long been touted by the fitness and bodybuilding communities for their muscle building benefits. From ultra-bulk protein powders to lean mass-promoting snack bars, there’s no shortage of products available for those seeking a muscle boost.

However, protein’s popularity has also meant that less attention has been paid to researching its potentially negative side-effects.

According to the study published in the Journal of Nature Metabolism, excessive consumption of branched-chain amino acids (BCAAs) may reduce lifespan, negatively impact mood and lead to weight gain.

 

BCAAs stands for branched-chain amino acids. It’s a group of three essential amino acids: leucine, isoleucine and valine, and are most commonly found in red meat and dairy.

BCAAs great for adding muscle mass, but science says you could pay for it later.

Researchers have investigated the complex role nutrition plays in mediating various aspects of metabolic health, reproduction, appetite and ageing.

“While diets high in protein and low in carbohydrates were shown to be beneficial for reproductive function, they had detrimental effects for health in mid-late life, and also led to a shortened lifespan,” one of the researchers, Dr Samantha Solon explained.

“What this new research has shown is that amino acid balance is important. It’s best to vary sources of protein to ensure you’re getting the best amino acid balance.”

The current research examined the impacts that dietary BCAAs and other essential amino acids such as tryptophan had on the health and body composition of mice.

“Supplementation of BCAAs resulted in high levels of BCAAs in the blood which competed with tryptophan for transport into the brain,” explained one of the researchers, Professor Stephen Simpson.

“Tryptophan is the sole precursor for the hormone serotonin, which is often called the ‘happiness chemical’ for its mood-enhancing effects and its role in promoting sleep. But serotonin does more than this, and therein lay the problem,” he added.

Dietitian and public health nutritionist Dr Rosilene Ribeiro recommend eating a wide range of proteins.

It’s important to vary protein sources in order to get a variety of essential amino acids, through a healthy and balanced diet rich in fibre, vitamins and minerals.

BCAAs are essential amino acids present in protein-containing foods, with red meat and dairy being the richest sources. Chicken, fish and eggs are also nutritious sources of BCAAs.

Vegetarians can find BCAAs in beans, lentils, nuts and soy proteins.

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Health

Know the severity of falling sick in the morning

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While sickness comes irrespective of the time, the severity of afflictions ranging from allergies to heart attacks differs in the morning from that in the night highlighted a new study. The study was published in the Journal Trends in Immunology which compiled studies, predominantly in mice, that looked at the connection between circadian rhythms and immune responses.

The body reacts to cues such as light and hormones to anticipate recurring rhythms of sleep, metabolism, and other physiological processes. The numbers of white blood cells, in both humans and mice also oscillate in a circadian manner.

Taking into account the above-mentioned facts, researchers in the study found that:

 

Heart attacks in humans are known to strike most commonly in the morning, and research suggests that morning heart attacks tend to be more severe than at night.

In mice, the numbers of monocytes, a type of white blood cell that fights off bacteria, viruses, and fungi –are elevated in the blood during the day. At night, monocytes are elevated in infarcted heart tissue, resulting in decreased cardiac protection at that time of day relative to morning.

Parasite infections are time-of-day dependent. Mice infected with the gastrointestinal parasite Trichuris muris in the morning have been able to kill worms significantly faster than those infected in the evening.

Allergic symptoms follow a time-of-day dependent rhythmicity, generally worse between midnight and early morning. Hence, the molecular clock can physiologically drive innate immune cell recruitment and the outcomes of asthma in humans, or airway inflammation in mice, the review notes.

“Investigating circadian rhythms in innate and adaptive immunity is a great tool to generally understand the physiological interplay and time-dependent succession of events in generating immune responses,” said senior author Christoph Scheiermann, University of Geneva.

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Health

ICMR develops affordable quick test kits for diagnosing genetic bleeding disorders

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The Indian Council of Medical Research (ICMR) has developed a cost-effective and rapid point-of-care test kit for diagnosing genetic bleeding disorders such as haemophilia A and Von Willebrand disease (VWD).

Diagnostics which are currently available require special equipment and are expensive.

“Both Haemophilia A and VWD are under diagnosed disorders in our country. There are only handful of comprehensive diagnostic centres for bleeding disorders,” an official at ICMR said.

 

“Lack of awareness and diagnostic facilities, high cost of tests are some of the factors for under-diagnosis of bleeding disorders in our country,” he said.

According to the ICMR, the kit is the world’s first point-of-care test for specific diagnosis of any common bleeding disorder and costs less than Rs 50 in comparison to existing conventional test that cost around Rs 4,000 to Rs 10,000.

The newly developed kit would help in diagnosis within 30 minutes of blood sample collection. Also, this will be available at any level of health care system including primary health care centres (PHCs) since it does not require any special expertise or infrastructure.

Worldwide, incidence of Haemophilia A is 1 per 10,000 male births and that of VWD is around 1 per cent of the general population.

“In India, there is no epidemiological data. We may have roughly 80,000-1,00,000 severe Haemophilia cases in our country, but the total number registered with Haemophilia Federation India (HFI) is only around 19,000,” the official said.

Patients with severe Haemophilia A or VWD can have life threatening spontaneous or post-traumatic bleeding like brain haemorrhage and gastrointestinal bleeding. In emergency medical setting, it is important to have a quick diagnosis of bleeding disorders for treatment.

This rapid test kit can be used for the diagnosis of menorrhagia cases/ post-partum haemorrhage (PPH), gynecological complications among others.

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