A drug currently in clinical trials as a cancer therapy can also stimulate pancreatic beta cells to secrete insulin, revealing a previously unknown mechanism for insulin regulation in type 2 diabetes, according to a new study ...
Nov 9, 2023
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Neurons talk to each other using chemical signals called neurotransmitters. Scientists at St. Jude Children's Research Hospital have drawn on structural biology expertise to determine structures of vesicular monoamine transporter ...
Nov 1, 2023
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Scientists in Brazil, the world's second-biggest consumer of cocaine, have announced the development of an innovative new treatment for addiction to the drug and its powerful derivative crack: a vaccine.
Oct 26, 2023
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Zaher Elbeck from ICMC at the Department of Medicine, Huddinge (MedH) is defending his thesis, titled "Redox and epigenetic modulators regulate cardiac function and remodeling in health and disease," on 16 October 2023. The ...
Oct 10, 2023
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Billions of people around the world have received the Pfizer or Moderna COVID-19 vaccines. The rapid development of these vaccines changed the course of the pandemic, providing protection against the SARS-CoV-2 virus.
Oct 3, 2023
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The synthetic opioid fentanyl is well known for the many lives it has claimed—mainly in the US, but elsewhere too. Now, a less well-known class of synthetic opioids called nitazenes is starting to crop up in overdose cases, ...
Sep 26, 2023
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A team of biomedical engineers from Brown University has developed a new hydrogel-based delivery system that balances the acidic environment in a tumor and greatly enhances the cancer-fighting activity of the chemotherapeutic ...
Sep 20, 2023
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Actinium-targeted alpha radiotherapy is a promising approach for treating metastatic cancers, including prostate cancer. This approach requires doctors to obtain images of the radiotherapy agent as it moves to tumors, a process ...
Aug 28, 2023
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A deafened adult cannot recover the ability to hear, because the sensory hearing cells of the inner ear don't regenerate after damage. In two new studies, published in the Proceedings of the National Academy of the Sciences ...
Aug 14, 2023
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A juicy burger is a staple in many Australians' diet. Yet research shows regularly eating red meat can increase your risk of developing type 2 diabetes, heart disease and certain cancers.
Aug 7, 2023
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A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions and that have a unique and defined chemical structure. Chemical compounds consist of a fixed ratio of atoms that are held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be compound molecules held together by covalent bonds, salts held together by ionic bonds, metallic compounds held together by metallic bonds, or complexes held together by coordinate covalent bonds. Substances such as pure chemical elements and elemental molecules consisting of multiple atoms of a single element (such as H2, S8, etc.) are not considered chemical compounds.
Elements form compounds to become more stable. They become stable when they have the maximum number of possible electrons in their outermost energy level, which is normally two or eight valence electrons. This is the reason that noble gases do not frequently react: they already possess eight valence electrons (the exception being helium, which requires only two valence electrons to achieve stability).
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