In the 1970s, scientists from several countries proposed to reconstruct, one by one, all the neurons in the brain as they appear under an electron microscope. They started with a small worm. Caenorhabditis elegans has only 302 neurons. It took 16 years. How much time would be required to repeat this arduous task for the 100 billion neurons in the human brain?
First, the good news about pandemics – and in 2024, there was big “good news.” Science Magazine named lenacapavir (Gilead Sciences Inc.) as the Breakthrough of the Year. In two separate trials, lenacapavir prevented HIV transmission with 100% efficacy in cisgender African women and 99.9% efficacy in men and gender-diverse persons when administered twice a year.
In the 1970s, scientists from several countries proposed to reconstruct, one by one, all the neurons in the brain as they appear under an electron microscope. They started with a small worm. Caenorhabditis elegans has only 302 neurons. It took 16 years. How much time would be required to repeat this arduous task for the 100 billion neurons in the human brain?
A gene therapy based on an enhanced lipid nanoparticle (LNP) loaded with vascular endothelial growth factor (VEGF) mRNA could be developed for the treatment of preeclampsia, according to a study in mice in which it alleviated maternal hypertension until the end of gestation and improved fetal health. Preeclampsia is a disease that affects 3% to 5% of pregnant women, who suffer from hypertension and proteinuria, elevated levels of protein in the urine, during pregnancy.
Although it does not generally infect humans, a single mutation of the H5N1 virus in the highly pathogenic avian and bovine clade 2.3.4.4b could overcome this barrier and possibly trigger a pandemic.
Although it does not generally infect humans, a single mutation of the H5N1 virus in the highly pathogenic avian and bovine clade 2.3.4.4b could overcome this barrier and possibly trigger a pandemic. Scientists at The Scripps Research Institute have warned of this possibility after studying the three-dimensional structure of the viral hemagglutinin and seeing how a change in one amino acid would make it more suitable for the human cell receptor. The researchers stress the need to monitor new mutations of this virus in order to act quickly in case the global jump to our species occurs.
In breast cancer, neoadjuvant chemotherapy reduces the tumor before surgery. However, the response to this treatment does not depend solely on the subtype of malignancies. Other factors could play a key role in its effectiveness, as shown in a study that described how the estrous cycle phases contribute to this variation.
In breast cancer, neoadjuvant chemotherapy reduces the tumor before surgery. However, the response to this treatment does not depend solely on the subtype of malignancies. Other factors could play a key role in its effectiveness, as shown in a study that described how the estrous cycle phases contribute to this variation. The researchers propose adjusting the approach to the most suitable moment for patients.
In breast cancer, neoadjuvant chemotherapy reduces the tumor before surgery. However, the response to this treatment does not depend solely on the subtype of malignancies. Other factors could play a key role in its effectiveness, as shown in a study that described how the estrous cycle phases contribute to this variation. The researchers propose adjusting the approach to the most suitable moment for patients.
An international consortium of thousands of scientists is creating the Human Cell Atlas, a three-dimensional map of all the cells in the body. The goal is to understand all the cells that make up human tissues, organs and systems, which will enable multiple medical applications. This collection of cell maps is openly available for navigation at single-cell resolution, identified through omics analyses that reveal the tridimensional distribution of each cell.
