Medical information bd.

18/08/2025

A new stem cell therapy may reverse spinal cord injury. A man who was paralyzed can now stand after getting the injection.
And he doesn't need any assistance.
In a landmark move, Japanese scientists have received regulatory approval to use reprogrammed stem cells to treat spinal-cord injuries in humans for the first time.
Led by stem-cell expert Hideyuki Okano at Keio University, the trial will utilize induced pluripotent stem (iPS) cells—adult cells genetically reprogrammed to an embryonic-like state.
These cells will be transformed into neural precursors and injected into patients shortly after injury, with the aim of regenerating damaged nerve tissues.
The procedure, which previously showed promise in restoring movement in spinal-injured monkeys, will initially be tested on four human patients to evaluate safety and potential effectiveness. If successful, it could pave the way for broader clinical trials. While iPS cells have been used in treating conditions like macular degeneration and Parkinson’s disease, this marks their debut in addressing paralysis from spinal injuries—offering new hope where few treatments currently exist.

18/08/2025

18/08/2025

Scientists have developed a groundbreaking medical innovation — a tiny magnetic robot that can break down kidney stones more quickly and with less discomfort than traditional treatments.

This microrobot, about the size of a grain of rice, is guided by external magnets through the urinary tract. Once it reaches the kidney stone, it delivers precise vibrations and pulses that fragment the stone into tiny pieces. These fragments can then pass naturally and painlessly out of the body.

Unlike conventional methods like shock wave therapy or surgery, this approach is minimally invasive, causes less tissue damage, and can reduce recovery time significantly. It's a promising solution for patients who suffer from recurrent or large kidney stones and opens the door for future robotic tools that could treat other internal conditions in similarly non-invasive ways.

This innovation represents a major leap forward in robotic medicine, combining precision engineering, magnetic navigation, and patient comfort to transform how we treat painful conditions like kidney stones.

17/08/2025

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U.S. scientists created an injectable foam that stops internal bleeding in 15 seconds

At the University of Michigan, bioengineers have developed a self-expanding injectable foam that can stop life-threatening internal bleeding — from trauma or surgery — within 15 seconds, without surgery or compression. This could save millions of lives in emergencies and on battlefields.

The foam is made of biodegradable polymers mixed with clotting factors and temperature-sensitive agents. When injected into the body — via syringe or catheter — it rapidly expands and conforms to the shape of the bleeding cavity. Simultaneously, it activates internal clotting and exerts gentle pressure on damaged vessels to stop blood loss instantly.

Unlike traditional clotting agents, which only work on surface wounds or require surgical access, this foam is designed for deep trauma — abdominal hemorrhage, liver rupture, or internal organ injury. It’s even effective in coagulopathic patients, such as those on blood thinners or with clotting disorders.

In animal studies, survival rates jumped from 22% to over 90% after abdominal injuries when the foam was used. It dissolves within 2–3 hours, leaving no residue, and doesn’t interfere with follow-up surgery or healing.

This technology is now being fast-tracked by the U.S. military and emergency trauma centers for pre-hospital use, especially in rural, remote, or battlefield conditions where immediate surgical care isn’t possible.

It turns a deadly delay into a life-saving window — compressing minutes into seconds and giving trauma patients a second chance.

17/08/2025

16/08/2025

Researchers at the University of Waterloo, led by Dr. Veronika Magdanz, have created a tiny magnetic “robot” that can break down kidney stones directly in the urinary tract.

The device is a soft, flexible strip about 1 cm long, made from hydrogel and elastomer, and contains the enzyme urease along with a small magnet.

Inserted into the bladder through a catheter, it is guided by doctors using a robotic arm with a rotating magnet and held in place with an external magnetic patch.

Once positioned near a uric acid kidney stone, the urease raises the urine’s pH, making it less acidic. This dissolves the stone into smaller pieces that can pass naturally within days.

In lab tests with a 3D-printed urinary tract model, the device increased urine pH from 6 to 7 and reduced stone weight by about 30% in five days.

The research will now proceed to large animal trials and further refine the control system, which uses real-time ultrasound to precisely guide the device into place.

15/08/2025

🌱🦷 Can We Truly Regrow Teeth? Japan Says the Future Is Here — and It’s Growing!

It may sound like a page from a futuristic novel, but in a quiet lab in Japan, science fiction is rapidly becoming scientific fact.

For centuries, losing a tooth meant a permanent gap, filled only by artificial replacements — dentures, bridges, or expensive implants. But now, Japanese researchers are on the brink of rewriting that dental destiny with a breakthrough that could naturally regrow teeth.

🧪 The Groundbreaking Science
At the core of this innovation lies a fascinating discovery: a specific protein in the human body that inhibits the growth of new teeth after childhood. Scientists have now developed a drug that suppresses this inhibitor — essentially unlocking our body's dormant ability to regenerate teeth.

👉 In lab tests on animals such as mice and ferrets, the results were nothing short of miraculous:
✅ New tooth buds began to emerge within weeks.
✅ No implants, no surgeries, no artificial materials — just the body doing what it was once believed it couldn’t.

🏥 Human Trials Have Officially Begun
This isn’t just a theory anymore. Clinical trials have started at Kyoto University Hospital, targeting patients born without certain teeth — a condition known as congenital tooth agenesis. If successful, the treatment could extend to children missing teeth — and eventually, even adults who’ve lost them due to decay or injury.

Imagine the impact — from restoring natural smiles to eliminating lifelong dental discomfort.

🦷 Why This Could Redefine Dental Medicine
No drills. No screws. No invasive procedures. Just a simple injection or oral medication that stimulates your own body to grow a real tooth — root, enamel, nerves and all.

This isn’t just a dental advance — it’s a revolution in regenerative health. And it's happening in real time.

🇯🇵 Once again, Japan leads the way — not with robots this time, but with biology. They are redefining what we thought was irreversible: lost teeth.

🧬 The future may not lie in artificial solutions anymore, but in awakening the healing power that lies within us all.

Because soon, the phrase “grow a new tooth” won’t belong in fairy tales — it’ll be written on a prescription pad.

15/08/2025

Chinese scientists have successfully grown a fully functional human kidney in a lab, marking a major breakthrough in regenerative medicine. According to Jungle Journalist, researchers in Shanghai used stem cell-derived organoids seeded onto a biodegradable hydrogel scaffold to create a kidney that mimics real biological function.

The lab-grown organ developed into a working nephron system, complete with glomeruli, tubules, and urine-collecting structures. Once connected to an artificial circulatory loop, the kidney began filtering blood plasma in real time, just like a natural kidney.

What makes this achievement especially remarkable is that the bioengineered kidney not only filtered blood and produced urine, but also balanced electrolytes and responded to hormonal signals such as ADH and aldosterone. These responses allowed it to adjust water retention and salt levels, demonstrating a level of physiological complexity rarely seen in lab-grown organs.

The kidney remained functional for over 60 hours in lab conditions, and the team is now conducting scaled trials on pigs, with human pilot studies expected within two years. Their ultimate goal is to create implant-ready kidneys using a patient’s own cells, eliminating the risk of transplant rejection.

This development could revolutionize treatment for kidney failure, which affects over 850 million people globally. If successful, it would mark a major step toward on-demand organ manufacturing, the holy grail of regenerative medicine.

12/08/2025

Scientists at Drexel University in the United States have developed a nanometer-scale robot, about 200 nanometers wide, capable of clearing cholesterol from blood vessels without surgery.

Built from biocompatible iron-oxide beads arranged in a spiral shape, the tiny device can move through the bloodstream like a corkscrew, propelled and guided remotely using external magnetic fields.

This design allows precise navigation inside arteries, even through narrow or twisted pathways.

Once at the target site, the nanobot physically breaks down cholesterol plaque blocking the vessel walls.

At the same time, it can release anticoagulant medication, helping to prevent dangerous blood clots during and after the procedure.

Because of its scale and non-invasive nature, this approach could potentially replace or reduce the need for surgeries like stent placement or bypass operations.

Currently, the technology is still in laboratory testing and has not yet reached human clinical trials.

However, researchers believe it could significantly improve treatment success rates, shorten recovery time, and lower procedural risks once it is refined for safe use in patients.

If successful, this innovation could transform how cardiovascular blockages are treated, offering a precise, minimally invasive solution for one of the world’s leading causes of death.