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Archive for the ‘biotech/medical’ category: Page 297

Feb 11, 2024

This new 3D printing method could solve the organ transplantation crisis

Posted by in categories: 3D printing, bioengineering, biotech/medical

In the United States, the shortage of available organs for transplantation remains a critical issue, with over 100,000 individuals currently on the waiting list. The demand for organs, including hearts, kidneys, and livers, significantly outweighs the available supply, leading to prolonged waiting times and often, devastating consequences.

It is estimated that approximately 6,000 Americans lose their lives while waiting for a suitable donor organ every year.

Researchers at Carnegie Mellon University have developed a novel tissue engineering technique that aims to potentially bridge the gap between organ demand and availability, offering a beacon of hope.

Feb 11, 2024

Scientists reveal new early detection method for ovarian cancer

Posted by in category: biotech/medical

Researchers unveil urine-based ovarian cancer test using nanopore sensing and identifying peptides, promising improved early detection.

Feb 11, 2024

Researchers discover that blocking ephrin B2 signaling can stop multiple myeloma growth

Posted by in category: biotech/medical

Cedars-Sinai Cancer investigators have discovered a protein expressed on multiple myeloma cancer cells that drives disease growth and development. The new study found that blocking part of the protein’s unique signaling pathway stops myeloma growth in culture and in laboratory mice. Their study was published in the journal Cancer Research.

The protein studied, called ephrin B2, is a powerful new target in the treatment of patients with multiple myeloma, a disease that has numerous partially effective treatments, but no cure. Based on these findings, investigators are now working on the development of therapies to target this protein in patients.

Myeloma cells grow inside a patient’s bone marrow. Unlike many types of cancer cells, multiple myeloma cells cannot live outside the patient, meaning they rely on signals from the patient’s healthy cells in order to grow. Investigators sought to determine the source of that signal as a potential way to block myeloma cells’ growth.

Feb 11, 2024

3 types of cancer are affecting more young people, according to an expert. She shared how to lower your risk and catch signs early

Posted by in category: biotech/medical

More young people are getting colorectal, breast, and cervical cancers. An expert recommended knowing your family history and advocating for yourself.

Feb 11, 2024

Physicist uses harmless rays in skin cancer detection breakthrough

Posted by in categories: biotech/medical, innovation

Terahertz radiation has several advantages over other imaging modalities, such as X-rays and ultrasound. It is non-ionizing, meaning it does not damage the cells or tissues of the body. It is also sensitive to water, which makes it ideal for detecting skin cancers, as they tend to have different water content and blood supply than normal skin.

Professor MacPherson and her team at the Department of Physics are developing a screening device that uses terahertz frequencies to scan the skin and produce high-resolution images that can identify suspicious lesions. The device is portable, fast, and easy to use and could be deployed in clinics, hospitals, and pharmacies.

Feb 11, 2024

Researchers discover one million new components of the human genome

Posted by in category: biotech/medical

Researchers at the University of Toronto’s Donnelly Center for Cellular and Biomolecular Research have found nearly one million new exons—stretches of DNA that are expressed in mature RNA—in the human genome.

The findings were published in the journal Genome Research.

There are around 20,000 in humans that contain approximately 180,000 known internal exons. These protein-coding regions account for only one percent of the entire . The vast majority of what remains is a mystery—aptly referred to as the “dark genome.”

Feb 10, 2024

How to stop our immune systems from turning on us

Posted by in category: biotech/medical

From ‘inverse vaccines’ to repurposed cancer therapies, several potential cures for autoimmune diseases are showing serious promise.

Feb 10, 2024

Researchers unveil new and improved method to study the brain

Posted by in categories: biotech/medical, chemistry, neuroscience

Scientists at the University of Pennsylvania have unveiled a revolutionary method to study the microscopic structures of the human brain. The study, led by Benjamin Creekmore in the labs of Yi-Wei Chang and Edward Lee, promises to enhance our understanding of various brain diseases, including Alzheimer’s and multiple sclerosis.

Cryo-electron tomography takes center stage

Traditionally, scientists have utilized electron microscopy to explore and comprehend the intricate details of cellular structures within the brain. However, this method has been fraught with challenges, such as the alteration of cell structures due to the addition of chemicals and physical tissue cutting.

Feb 10, 2024

World-first discovery may enable an effective long-term lupus treatment

Posted by in category: biotech/medical

Australian researchers have worked out how to fix a defect that causes lupus, and hope their world-first discovery will offer effective long-term treatment.

Published in Nature Communications, the Monash University-led study found a way to reprogram the defective cells of patients with protective molecules from healthy people.

Using human cells, the new treatment restores the protective side of the immune system that prevents autoimmunity, which is when the immune system attacks its own cells. The findings relate to the autoimmune disease lupus, a debilitating disease with no cure and limited treatments.

Feb 10, 2024

Real-World Development of

Posted by in categories: biotech/medical, genetics

Patients with recurrent Escherichia coli bacteremia can harbor strains with mutations that promote multidrug antibiotic resistance:


Certain patients with gram-negative bacterial bloodstream infections (GNB-BSIs) are well-known to experience recurrent bacteremia after receiving antimicrobial therapy — but is this phenomenon due to microbial factors? Researchers have analyzed isolates from patients with relapsed GNB-BSIs in which the initial and subsequent strains were nearly identical genetically.

Paired bacteremic isolates of E. coli, Klebsiella species, Serratia marcescens, and Pseudomonas aeruginosa were identified for a detailed analysis of the E. coli strains. Time-kill studies found that 4 of the 11 recurrent isolates had a higher number of bacterial colony-forming units persisting through 24 hours of exposure to meropenem. The recurrent strain with the greatest number of persisting cells had a loss-of-function mutation in the ptsI gene (involved in the phosphoenolpyruvate phosphotransferase system and shown in vitro to be important to the effects of bactericidal antibiotics). Challenging mice with the initial and ptsI mutant recurrent strains in a bacteremia model showed that both variants were equally virulent, but the recurrent strain was 10-fold less susceptible to treatment with ertapenem.

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