Medicine and Health
EpiBone Startup Is Creating The Future Of Bone Transplants
An exciting new breakthrough in bone transplants may become available in just a few short years thanks to a startup that has successfully grown healthy living bones out of harvested stem cells. According to the Musculoskeletal Transplant Foundation, there are more than 900,000 allografts (bone or soft tissue transplants) each year in the United States. Patients who undergo these bone or soft tissue transplants have limited options such as bones from a cadaver, synthetic bone replacements, or harvesting a person’s bone from one area to insert it into another. Not only are most of those options painful but there are also risky side effects. Bone from another body can carry disease and this is why doctors must be careful when screening donors. Grafts from a patient’s own body can still be rejected and cause a painful infection or in more serious cases lead to nerve damage.
Luckily the team at EpiBone, co-founders Nina Tandon, Dr. Sarindr Bhumiratana, and Elisa Cimetta are working hard to do away with those risky procedures forever. The technology was developed from Sarindr’s PhD work. The Harlem-based startup EpiBone aims to turn people’s harvested stem cells into healthy living human bones.
There are over 2 million procedures performed worldwide every year that involve bone grafting. Everything from cancer to trauma to congenital defects. There’s no other way to say it, if you need a piece of human bone, the only way to get it is to cut it out of a human. We’re hoping to disrupt that process and view the body as a renewable resource of cells that we can use to grow bones from scratch.
-Nina Tandon, Co-Founder EpiBone
For their research, the EpiBone team chose to work with pigs because their head size and mechanics of chewing are similar to humans. For a strong proof of concept, EpiBone chose to begin with a difficult bone in the head called the temporomandibular (jaw) joint because the bone is strained by chewing and movement. The EpiBone team felt that if they could achieve this bone, then the rest of the face would be easy.
Unlike traditional bone transplant procedures today, EpiBone’s process will dramatically decrease any risks of rejection because the bone will be made from a patient’s own cells and because each bone is custom-built, it will have a clean and precise fit (unlike big bulky synthetic bone or bone cut from elsewhere). With a precise fit, EpiBone procedures will require less surgery and recovery times. .
How EpiBone Turns Stem Cells Into Implantable Bones
The process of preparing for a bone transplant requires first knowing exactly what size and shape of bone is needed. This is why EpiBone would first take a CT scan to get a 3D structure of a patient’s bone and use a high-precision machine to carve a decellularized bovine bone into the structured shape. Then they take fat tissue from a patient and extract stem cells from it. A combination of those stem cells and the piece of carved bone are combined into a bioreactor (a vessel that supports tissue growth outside of the body). After three weeks in the bioreactor, a piece of bone is ready for implantation.
The Costs
Healthcare is costly, especially in America. So, just how much might it cost to receive an EpiBone transplant? According to the US National Library of Medicine, bioreactor-based bone grafts may range from $10,000 to $15,000 which is about three to four times the cost of a traditional procedure.
Future Goals For EpiBone
EpiBone has no competition and because so, it will likely evolve quickly. Human clinical trials are set to begin sometime in 2015. EpiBone also plans to manufacture all the bones of the face (they’re already making cheekbones and eye sockets). Until then, EpiBone will continue to grow bigger and better bones as they await their FDA approval within the next few years.
Medicine and Health
A recently identified strain of deadly fungus poses a significant risk to public health
Researchers have recently discovered a new group of Candida auris, a potentially dangerous pathogen. The finding increases the total number of identified clades of the fungus, which is a newly emerging superbug resistant to multiple drugs, to six.
Candida auris is a strain of yeast that has the potential to cause serious illness and is frequently impervious to antifungal drugs. While individuals who are in good health generally do not fall ill, the transmission of the disease is highly prevalent within medical institutions and poses a significant risk to individuals with compromised immune systems. The yeast can induce a variety of conditions ranging from superficial infections of the skin to more severe and life-threatening illnesses, such as bloodstream infections. Due to its high level of resistance to multiple drugs, treating it can be challenging, and in some cases, even impossible.
The authors state that the pathogen is a significant global public health threat due to its widespread distribution, resistance to multiple drugs, high ability to spread, tendency to cause outbreaks, and high mortality rate. Although infections are still relatively uncommon, there has been a significant increase in cases in recent years.
Previously, the fungus had been categorized into five distinct clades, each located in different geographic regions: South Asia, East Asia, Africa, South America, and Iran.
In April 2023, doctors from the Singapore General Hospital identified a patient carrying a unique strain of C. auris as part of a routine screening program, adding it as the most recent clade to be discovered. Typically, these cases arise from individuals who have recently traveled, but this particular patient had not traveled outside the country for a period of two years, which raised some concerns.
Upon conducting a genetic analysis of the strain, the researchers determined that it did not align with any of the five known clades of the fungus. Therefore, it can be concluded that the strain belongs to a previously unidentified, sixth clade. Subsequently, they conducted tests on strains obtained from previous patients and identified two additional isolates of this particular group of C. auris in Singapore, as well as another isolate in Bangladesh.
The extent of the new clade’s prevalence and its potential to cause invasive infections and outbreaks remains uncertain at present. However, the researchers emphasize the importance of promptly identifying and controlling it in order to safeguard patient well-being.
“The ramifications of this breakthrough transcend the confines of the laboratory.” “Given the recent discovery of the sixth Candida auris clade, it is imperative to enhance surveillance capability or create new methods to strengthen existing surveillance strategies. This will enable health care facilities to closely monitor its emergence and effectively control its spread,” stated Dr. Karrie Ko, co-first author of the study.
Fortunately, the cases described in the study remained vulnerable to all antifungals that were tested. This should alleviate concerns about a pandemic similar to the one depicted in The Last Of Us. However, it is evident that the threat of C. auris is persistent. Therefore, additional efforts are required to identify new strains, monitor their spread, and control any negative clinical consequences.
The research is published in The Lancet Microbe journal.
Medicine and Health
What makes your chest hurt when something makes you jump?
Have you ever been scared so badly that you grabbed your chest? You feel like someone or something just zapped you behind the sternum. As you rest, you lean against the wall and think about why your friend is such a jerk and why you can feel it in your chest whenever you get scared.
People often use words like “heart-stopping” when they write fiction about fear, but the science of fear tells us that this isn’t what’s happening because it wouldn’t make sense. Our bodies are getting ready to deal with an impending threat when we’re scared, and going into cardiac arrest wouldn’t help us get very far if a lion was after us.
What do we do when we’re scared?
The sympathetic nervous system is what gets you excited when something makes you jump. It’s a tool inside our bodies that releases hormones and changes the way our bodies work to get us ready for the fight-or-flight response.
One important part is adrenaline, which is also known as epinephrine. The adrenal glands squeeze it out into the blood. The heart starts beating faster, sending more blood to your muscles and organs right away. Because they need all the oxygen they can get if they want to get away from a dangerous animal.
How do you feel when you go for a run?
Anyone who has ever used an EpiPen knows how bad it is to feel a sudden rush of adrenaline. It’s a stress hormone that makes you feel nervous and anxious, like you would before doing a bungee jump. Getting a rush when you think about a traumatic event from the past can be a sign of PTSD.
A medicine called adrenaline is used because it can help people who are having a medical emergency. If you have anaphylaxis from an allergen like peanuts, this can help because it can open your airway. Because it changes the strength and speed of heartbeats, it is also sometimes used to help people who are having a cardiac arrest.
When your adrenaline level goes up quickly, you may feel shaky, your heart beat quickly, and your chest get tight. When you add in the fact that you’re more alert, you become very aware of the changes in your body. This is especially clear when you’re not in danger, like when your partner surprised you at home when you thought you were alone.
When you’re scared, your sympathetic nervous system usually kicks in, which is normal. But, some heart conditions can get worse when you’re scared. Should anyone be having chest pain or ongoing discomfort, they should see a doctor. In the end, it is possible to be so scared that you die.
This article is not meant to be a replacement for medical advice, diagnosis, or treatment from a trained professional. If you have questions about a medical condition, you should always talk to a qualified health professional.
Medicine and Health
The Lacks family is suing again over her “stolen” cells
The family of Henrietta Lacks has filed a new lawsuit against two sizable drug companies for using her genetic material without her consent.
In the US District Court for the District of Maryland, Lacks’ living relatives are suing Novartis Pharmaceuticals Corporation, Novartis Gene Therapies, Inc., Viatris, Inc., and its subsidiary, Mylan Pharmaceuticals. They say the companies have used the “stolen” HeLa cell line to make hundreds of patents and have made a lot of money from it.
The suit wants the money made from using these cells to be “rightfully transferred” to Henrietta Lacks’s estate.
Novartis and Viatris chose to sell Henrietta Lacks’ living genetic material. Lacks was a black grandmother, community leader, and woman whose doctors took her tissue without her knowledge or permission, according to Chris Ayers, an attorney at Seeger Weiss LLP who is representing the Lacks family.
Ayers added, “We will keep looking for justice for Mrs. Lacks and her family.”
Henrietta Lacks died on October 4, 1951, from cervical cancer. She was 31 years old. Some of her cells are still alive today. A doctor at Johns Hopkins Hospital took a sample of her cervical cells without her knowledge just before she died. They were doing a cancer check. It was seen that her cells kept multiplying quickly, even after most of the cells in other samples would have died without their host.
Because scientists saw the potential, they found that these cells could be a cheap and easy way to help researchers do more research. The “HeLa immortal cell line” is what scientists call these cells, and they are very useful for biomedical research.
Over 75,000 scientific studies around the world have used these cells, which amount to about 55 million tons. They have been very important in making progress in areas like polio vaccines, cancer treatments, HIV/AIDS treatments, and much more.
All of this was done, though, without Lacks’ knowledge or permission. For many years, her family also didn’t know that the cells were being used for business.
Selling HeLa cells for money brings up important issues in medical ethics and genetics. As a black woman living in America in the 1950s, Lacks’ case shows how medical racism still affects minorities who aren’t getting enough help.
Even though a lot of people know about these problems, HeLa cells are still used in medical research for profit, which makes some companies a lot of money.
“Now that everyone knows Henrietta Lacks’ story, it’s shocking, but not surprising, that drug companies like Novartis and Viatris are still making money off of the deeply unethical origins of HeLa cells and the disturbing history of medical racism,” said Chris Seeger, another lawyer for the family.
A historic deal was made by Lacks’ family in 2023 after they sued Thermo Fisher Scientific, Inc., another biotech company, in the US District Court for the District of Baltimore. During that time, the lawyers said that the settlement was only the beginning and that there could be many more lawsuits about the use of HeLa cells.
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