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Archive for the ‘chemistry’ category: Page 107

Aug 14, 2023

Neutrons seek to stop cancer from hijacking a metabolic highway

Posted by in categories: biotech/medical, chemistry

After a highly lauded research campaign that successfully redesigned a hepatitis C drug into one of the leading drug treatments for COVID-19, scientists at the Department of Energy’s Oak Ridge National Laboratory are now turning their drug design approach toward cancer.

In their latest study, published in the journal Communications Chemistry, the team used neutrons and X-rays to draw a roadmap of every atom, and inside a key enzyme that belongs to a that cells dramatically overuse to reproduce.

This new information essentially helps pave the way for developing new drugs that act as roadblocks along the metabolic pathway to cut off the supply of vital resources to cancers cells. The drugs would be designed to target highly aggressive tumor-forming cancers that too often become terminal such as lung, colon, breast, pancreatic and prostate cancers.

Aug 13, 2023

‘Quantum superchemistry’ observed for the 1st time ever

Posted by in categories: chemistry, particle physics, quantum physics

A new type of chemistry performed at very cold temperatures on very small particles enables quick, precise reactions.

Aug 13, 2023

Mineralization of bone matrix regulates tumor cell growth

Posted by in categories: biotech/medical, chemistry

Tumor cells are known to be fickle sleeper agents, often lying dormant in distant tissues for years before reactivating and forming metastasis. Numerous factors have been studied to understand why the activation occurs, from cells and molecules to other components in the so-called tissue microenvironment.

Now, an interdisciplinary Cornell University team has identified a new mechanism regulating growth in the skeleton, the primary site of breast cancer metastasis: mineralization of the bone matrix, a fibrous mesh of organic and inorganic components that determines the unique biochemical and biomechanical properties of our skeleton.

The team’s paper, “Bone-Matrix Mineralization Dampens Integrin-Mediated Mechanosignalling and Metastatic Progression in Breast Cancer,” published Aug. 7 in Nature Biomedical Engineering. The co-lead authors are research associate Siyoung Choi and doctoral student Matthew Whitman.

Aug 13, 2023

Detection of Various Microplastics in Patients Undergoing Cardiac Surgery

Posted by in categories: biotech/medical, chemistry

Microplastics have been detected in human stool, lungs, and placentas, which have direct exposure to the external environment through various body cavities, including the oral/anal cavity and uterine/vaginal cavity. Crucial data on microplastic exposure in completely enclosed human organs are still lacking. Herein, we used a laser direct infrared chemical imaging system and scanning electron microscopy to investigate whether microplastics exist in the human heart and its surrounding tissues. Microplastic specimens were collected from 15 cardiac surgery patients, including 6 pericardia, 6 epicardial adipose tissues, 11 pericardial adipose tissues, 3 myocardia, 5 left atrial appendages, and 7 pairs of pre-and postoperative venous blood samples.

Aug 13, 2023

New Mars discovery has experts believing there could be ‘life’ on red planet

Posted by in categories: alien life, chemistry

Alien enthusiasts have a new reason to get excited about potential life on Mars, after scientists found cracked mud on the Red Planet.

A recent research paper showed that the conditions that created cracks in the surface of Mars might have been favourable for microscopic life to thrive.

While scientists don’t yet know how life on Earth began, a prevalent theory is that repeated cycles of wet and dry conditions might have helped build the complex chemical building blocks needed for microbial life.

Aug 12, 2023

New photoreactor technology could pave the way to a carbon-neutral future, researchers say

Posted by in categories: chemistry, sustainability

An international team that includes researchers from the University of Toronto has designed and implemented a new model for photoreactors, a solar-powered technology for converting water, carbon dioxide, methane and nitrogen into greener chemicals and fuels.

The allows the photoreactor to capture photons at under varying sun directions, eliminating the need for sun-tracking. The panels are also manufacturable via extrusion of polymers, making them inexpensive and easily manufacturable at scale—all of which could help make a more affordable and practical.

Geoffrey Ozin, University Professor in U of T’s department of chemistry in the Faculty of Arts & Science, and his team collaborated with researchers from the Karlsruhe Institute of Technology (KIT) in Germany on the project.

Aug 12, 2023

Synthetic biology and artificial intelligence are set to change all aspects of our lives

Posted by in categories: bioengineering, biotech/medical, chemistry, ethics, genetics, law, robotics/AI

Reichman University’s new Innovation Institute, which is set to formally open this spring under the auspices of the new Graziella Drahi Innovation Building, aims to encourage interdisciplinary, innovative and applied research as a cooperation between the different academic schools. The establishment of the Innovation Institute comes along with a new vision for the University, which puts the emphasis on the fields of synthetic biology, Artificial Intelligence (AI) and Advanced Reality (XR). Prof. Noam Lemelshtrich Latar, the Head of the Institute, identifies these as fields of the future, and the new Innovation Institute will focus on interdisciplinary applied research and the ramifications of these fields on the subjects that are researched and taught at the schools, for example, how law and ethics influence new medical practices and scientific research.

Synthetic biology is a new interdisciplinary field that integrates biology, chemistry, computer science, electrical and genetic engineering, enabling fast manipulation of biological systems to achieve a desired product.

Prof. Lemelshtrich Latar, with Dr. Jonathan Giron, who was the Institute’s Chief Operating Officer, has made a significant revolution at the University, when they raised a meaningful donation to establish the Scojen Institute for Synthetic Biology. The vision of the Scojen Institute is to conduct applied scientific research by employing top global scientists at Reichman University to become the leading synthetic biology research Institute in Israel. The donation will allow recruiting four world-leading scientists in various scopes of synthetic biology in life sciences. The first scientist and Head of the Scojen Institute has already been recruited – Prof. Yosi Shacham Diamand, a leading global scientist in bio-sensors and the integration of electronics and biology. The Scojen Institute labs will be located in the Graziella Drahi Innovation Building and will be one part of the future Dina Recanati School of Medicine, set to open in the academic year 2024–2025.

Aug 12, 2023

Hair straightening chemicals associated with higher uterine cancer risk

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

NIH study finds Black women may be more affected due to higher use.

Women who used chemical hair straightening products were at higher risk for uterine cancer compared to women who did not report using these products, according to a new study from the National Institutes of Health. The researchers found no associations with uterine cancer for other hair products that the women reported using, including hair dyes, bleach, highlights, or perms.

The study data includes 33,497 U.S. women ages 35–74 participating in the Sister Study, a study led by the National Institute of Environmental Health Sciences (NIEHS), part of NIH, that seeks to identify risk factors for breast cancer and other health conditions. The women were followed for almost 11 years and during that time 378 uterine cancer cases were diagnosed.

Aug 12, 2023

Soap made from discarded plastics? This is upcycling at its best

Posted by in categories: chemistry, innovation

Scientists have developed a way to recycle plastic waste by transforming it into soap.

For the first time, researchers have used plastics to create soap. To achieve this goal, a team led by Virginia Tech scientists devised a novel approach.

As per the official release, this innovative method allowed them to upcycle plastics into chemicals known as surfactants, which are widely used in making soap and detergent.

Continue reading “Soap made from discarded plastics? This is upcycling at its best” »

Aug 10, 2023

Electrochemical process could boost efficiency of capturing carbon directly from air

Posted by in categories: chemistry, energy, engineering

A team from the University of Toronto’s Faculty of Applied Science & Engineering has invented a device that leverages electrochemistry to increase the efficiency of direct air carbon capture. Their alternative strategy aims to accelerate the widespread adoption of this emerging technology.

“The technology required to pull carbon directly out of the air has been developing for decades, but the field is now accelerating with governments and industry investing in the infrastructure required to actually do this at scale,” says David Sinton, a professor in the faculty’s department of mechanical and and senior author on a paper published in Joule that outlines the new technique.

“One key barrier is that current processes require a lot of energy, and indeed emit a fair amount of carbon themselves,” says Sinton, who holds a Canada Research Chair in microfluidics and energy and is academic director of the Climate Positive Energy Initiative, one of U of T’s Institutional Strategic Initiatives.