Scientists Identify Enzyme That Could Help Prevent Heart Failure (credit: Canva)
As the global population ages, the incidence of heart failure is rapidly rising, largely driven by the excessive growth of fibrotic tissue within the heart, known as fibrosis. A groundbreaking study from the Nagoya University Graduate School of Medicine in Japan has identified a key player in this process—an enzyme called protein kinase N (PKN)—which could unlock new avenues for treating heart failure.
The researchers discovered that PKN regulates the conversion of heart fibroblasts to myofibroblasts, a process that threatens the structural integrity of the heart. The study, led by Drs. Satoya Yoshida, Mikito Takefuji, and Toyoaki Murohara, demonstrated that deleting this enzyme in mice models significantly reduced cardiac dysfunction, indicating the potential of anti-PKN therapies in protecting heart failure patients.
Fibroblasts are small cells responsible for maintaining the structure of the heart. After an injury, these cells often convert into myofibroblasts, which aid in wound healing by producing fibrous connective tissues such as collagen and elastin. In patients with heart failure, however, this process becomes excessive, leading to the accumulation of tissue, a condition referred to as fibrosis. Fibrosis causes the heart tissue to stiffen, impairing its ability to function properly, thus increasing the risk of heart attack.
The team from Nagoya University focused on the role of PKN in this process. Collaborating with researchers at the Max Planck Institute, they discovered that PKN is involved in the signaling cascade that leads to the activation of heart fibroblasts. There are three forms of PKN in mammal cells—PKN1, PKN2, and PKN3—but the study zeroed in on PKN1 and PKN2 due to their presence in heart fibroblasts.
Through experiments involving mice that were genetically modified to lack PKN1 and PKN2, the team found a marked decrease in the expression of actin and collagen, proteins essential for tissue buildup in fibrosis. Additionally, these mice did not exhibit the conversion of fibroblasts to myofibroblasts, indicating that targeting PKN could prevent fibrosis-related cardiac dysfunction.
While the study was conducted on mouse models, the researchers believe their findings have direct implications for human heart health. Dr. Yoshida commented, "Although our study was done in a mouse model, PKN expression has been demonstrated in human heart fibroblasts, so similar results are expected in human trials. Almost all heart diseases are closely linked to heart fibrosis, so we hope our findings will contribute to improving the prognosis for many heart diseases, especially heart failure."
Currently, there are no treatments specifically targeting PKN, but the research team hopes that their discovery will lead to the development of PKN inhibitors. Such inhibitors could represent a new class of treatment, helping to protect patients from the devastating effects of heart failure by preventing fibrosis.
While exciting breakthroughs in heart failure treatment are on the horizon, maintaining a heart-healthy lifestyle is crucial for reducing your risk of heart disease. Here are some daily practices to help protect your heart:
1. Engage in moderate physical activity, such as brisk walking, for at least 30 minutes a day.
2. Focus on a diet rich in fruits, vegetables, whole grains, and lean proteins. Limiting your intake of salt, sugar, and unhealthy fats is essential for heart health.
3. Chronic stress can contribute to high blood pressure and heart disease. Practice relaxation techniques such as meditation or deep breathing.
4. Smoking is a major risk factor for heart disease. Seek support if you need help quitting.
5. Keep an eye on your blood pressure and cholesterol levels to detect any early signs of heart disease.
Credits: iStock
Cheaper copy of Wegovy by Hims & Hers for $49 has drawn tensions, with Novo Nordisk now approaching to take legal actions. The pill by Novo Nordisk is sold for $149. In a statement, Novo said, "The action by Hims & Hers is illegal mass compounding that poses a significant risk to patient safety. Novo Nordisk confirmed that the company will take legal and regulatory actions to protect patients.
“Novo Nordisk will take legal and regulatory action to protect patients, our intellectual property and the integrity of the US gold-standard drug approval framework. This is another example of Hims & Hers’ historic behaviour of duping the American public with knock-off GLP-1 products, and the FDA has previously warned them about their deceptive advertising of GLP-1 knock-offs,” the statement said.
Read: Wegovy Pills Now Available At Your Pharmacies, Here's What To Know About Its Usage
After the cheaper copy of the pill was launched by Hims & Hers, shares of Novo Nordisk and rival Eli Lilly fell by 7%. Whereas, stock for Hims & Hers initially spiked after the announcement, but pared gains after Novo said that it would fight the rollout.
Hims & Hers was previously offering compounded semaglutide, the active ingredient in Novo Nordisk's popular weight loss drug Ozempic and Wegovy, in injectable format. The company has now extended to offer the oral version.
Hims & Hers said that the Wegovy copy pill cost $49 for the first month and $99 with a 5-month plan. While semaglutide's patent is protected in the US until 2032, however, Hims & Hers claim that the copies are 'personalized' and therefore legal.
“This compounded product uses a different formulation and delivery system than FDA-approved oral semaglutide,” Hims & Hers said. “This once-a-day pill has the same active ingredient as Wegovy and empowers providers to tailor treatment plans specifically for those who prefer to avoid needles or need smaller doses to help to balance side-effects,” it said.
Novo Nordisk however, highlighted that it manufactures Wegovy pill by using SNAC technology. This technology helps in absorption when administered orally. Therefore, it is not clear how Hims & Hers copy formula could match that level of absorption.
Last year, Novo Nordisk and Hims & Hers partnered to offer weight loss jabs at a discounted price to telehealth company's customer. However, Novo Nordisk ended the collaboration just two months later, stating that Hims & Hers used 'deceptive' marketing that put patient safety at risk
While rival Eli Lilly does not have the weight loss pill yet, it is expected to launch orforglipron in the first half of this year. The pill is currently pending Food and Drug Administration approval.
Read: Eli Lilly Sends Weight-Loss Pill For Approval: Is Oral GLP-1 As Effective As The Injections?
“With the ... current legal backdrop, there is no reason why HIMS shouldn’t evaluate these launches for every subsequent weight loss product as the market continues to evolve,” Leerink analyst Michael Cherny said in a note to clients.
Credits: Wikimedia Commons and Canva
TrumpRx is live. President Donald Trump on Thursday announced the launch of TrumpRx, a direct-to-customer website that will lower prescription drug costs in the US.
As per the president, millions of Americans would save money through this platform. However, it is still unclear if all patients, especially those with insurance coverage will see more cost saving while using this website to buy their medicines.
TrumpRx is for people willing to pay cash and forgo insurance, which means people without or with limited coverage could benefit.
"You are going to save a fortune and this is also so good for overall health care," said Trump at the TrumpRx launching night on Thursday.

TrumpRx does not sell drugs directly to American patients, rather acts as a central hub that points them to drugmakers who are offering discounts. For instance, Eli Lilly and Novo Nordisk were already offering their popular weight loss drugs at hefty discounts, TrumpRx would further give them discount coupons and redirect them to their website.
This means if someone clicks on Eli Lilly's Zepbound offer, it will send them directly to the company's platform, where the person must submit prescription details.

At launch, the site only featured medications from five companies, which are:
However, as per a White House fact sheet, TrumpRx will list drugs from other companies "in coming months".
TrumpRx marks the government’s latest attempt to curb soaring prescription drug prices in the US, which are on average two to three times higher than in other developed countries and can be up to 10 times costlier than in some nations, according to public policy think tank Rand Corp.
TrumpRx “doesn’t appear to be a one-stop solution” to high drug costs for most Americans, said Juliette Cubanski, deputy director of the Program on Medicare Policy at KFF, a health policy research organization. While cash-pay options may offer better value for people without insurance, it remains unclear how many individuals would actually benefit from TrumpRx, she noted.
“If someone can already access a medication through their insurance with a relatively affordable copay, there isn’t much added advantage to using the TrumpRx website,” Cubanski said.
She also pointed out that insured consumers who purchase medicines through direct-to-consumer platforms may find those purchases do not count toward their insurance benefits, meaning they do not help meet deductibles or out-of-pocket maximums.
At the same time, Cubanski said TrumpRx could play a role in improving access to certain drugs at lower prices, especially medications that are not widely covered by insurance in the US, such as obesity treatments. Medicare is set to cover weight-loss drugs for the first time later this year under agreements struck by Eli Lilly and Novo Nordisk with Trump, though many employers remain reluctant to include these medicines in their coverage.
However, she added that many other drugs expected to be offered on TrumpRx are already commonly covered by insurance, and several are also available as lower-cost generics from rival manufacturers.
Credit: Canva
The Nipah virus outbreak began in West Bengal, India with two hospital nurses at AIIMS, Kolkata, testing positive for the infection and being quarantined, prompting widespread testing. Soon after, five cases, including a doctor and a staff member, were confirmed and over 100 people were quarantined.
However, one of the nurses, a 25-year-old unidentified man has now made a recovery and revealed his experience with the virus, claiming that despite irritation in the throat and uncertainty about what lay ahead, he had faith in his doctors and fellow nurses.
In an interview with the Metro, he said: “After I was taken off ventilation and regained consciousness, I came to know that I have Nipah. I still had the tube in my mouth, and there was irritation. Despite the irritation and my fear, I had faith in the doctors and nurses.
“I have suffered and I know the symptoms. I will tell people when they should get checked for the Nipah virus. I want to raise awareness about the virus and its symptoms.
“I am not sure how I came in contact with the deadly virus. Maybe it was while treating a patient. But I will continue to work as a nurse. I am waiting to rejoin the hospital,” he added.
The unidentified healthcare professional remains very weak physically and is undergoing physiotherapy to regain his strength. “I was bedridden for over a month. I am still very weak and have an unstable gait. So, I am undergoing physiotherapy,” he said.
The other nurse, a woman, remains in a coma but has been taken off ventilation support, a hospital official confirmed this week. .
According to WHO, Nipah virus is a zoonotic illness which means it is mostly transmitted from animals to humans through bats. However, it can also spread through fruits that have been contaminated by the saliva, urine or droppings of infected bats. Human-to-human transmission can also occur through close contact with an infected person or their bodily fluids.
The illness has a 75 percent fatality rate and there are no vaccines to protect the public.
The virus was first identified in 1998 during an outbreak among pig farmers in Malaysia and soon made its way to India and Bangladesh in 2001 with cases often involving family members or caregivers tending to infected patient.
READ MORE: Nipah Virus Outbreak In India: Myanmar Airport Tightens Health Screenings
Although Nipah virus has caused only a few known outbreaks in Asia, it infects a wide range of animals and causes severe disease and death in people. Some of its common symptoms include:
Samples collected from the patient’s home and workplaces, including pets and partially eaten fruits dropped by bats, all tested negative for the virus, and the exact source of the infection could not be identified.
The World Health Organization has declared it is unlikely India's deadly Nipah Virus outbreak will cross borders and reach other nations, noting that countries do not need to set any travel restrictions in place.
In an email to Reuters, officials said: "The WHO considers the risk of further spread of infection from these two cases is low". adding that India has the capacity to contain such outbreaks.
"There is no evidence yet of increased human to human transmission," it said, adding that it has coordinated with Indian health authorities.
While health officials state it is nearly impossible for the virus to transmit across countries and unlikely to cause an international outbreak, countries including Australia, Vietnam, Thailand, Malaysia and Singapore continue to remain on high alert and have begun airport screenings.
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