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Archive for the ‘biotech/medical’ category: Page 1376

Sep 27, 2020

Seismic sound waves crossing the deep ocean could be a new thermometer

Posted by in category: biotech/medical

It’s no problem atoll

To show that this works, the researchers used a seismometer station on Diego Garcia, a small atoll in the Indian Ocean about 3,000 kilometers from Sumatra. The tectonic plate boundary there is incredibly active, so there’s no shortage of earthquakes to work with. Between 2004 and 2016, there were over 4,000 earthquakes of magnitude 3.0 or higher that occurred near the Nias Island area of Sumatra. The researchers carefully processed all of these events to find repeaters similar enough to do the temperature calculation. They found over 2,000 such pairs based on 900 earthquakes.

If this portion of the Indian Ocean were to warm 1° C, T-waves from those earthquakes would take 5.4 seconds longer to reach this seismometer. The observed changes are smaller than that but they are coherent—there’s both an annual cycle and a gradual warming trend that look similar to other, more traditional datasets.

Sep 27, 2020

Harvard Professor Wants to Slow Down & Reverse Aging: David Sinclair’s Approach For a Longer Life

Posted by in categories: bioengineering, biotech/medical, genetics, information science, life extension, robotics/AI

David Sinclair wants to slow down and ultimately reverse aging. Sinclair sees aging as a disease and he is convinced aging is caused by epigenetic changes, abnormalities that occur when the body’s cells process extra or missing pieces of DNA. This results in the loss of the information that keeps our cells healthy. This information also tells the cells which genes to read. David Sinclair’s book: “Lifespan, why we age and why we don’t have to”, he describes the results of his research, theories and scientific philosophy as well as the potential consequences of the significant progress in genetic technologies.

At present, researchers are only just beginning to understand the biological basis of aging even in relatively simple and short-lived organisms such as yeast. Sinclair however, makes a convincing argument for why the life-extension technologies will eventually offer possibilities of life prolongation using genetic engineering.

Continue reading “Harvard Professor Wants to Slow Down & Reverse Aging: David Sinclair’s Approach For a Longer Life” »

Sep 27, 2020

A Genetic Variant That Protects Against Alzheimer’s Promotes Immune Cell Functions

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

Summary: PLCG2-P522R, a genetic variant that protects against Alzheimer’s disease, enhances key functions of immune cells.

Source: University of Eastern Finland

A new study conducted by researchers at the University of Eastern Finland found that the PLCG2-P522R genetic variant, which protects against Alzheimer’s disease, enhances several key functions of immune cells. The results obtained in the study highlight the importance of immune cells as a target of future development of new therapies for Alzheimer’s disease.

Sep 27, 2020

Neanderthal and Denisovan Y Chromosomes Sequenced – Surprise When Compared to Modern Human DNA

Posted by in categories: biotech/medical, sex

Neanderthals have adopted male sex chromosome from modern humans.

In 1997, the very first Neanderthal DNA sequence — just a small part of the mitochondrial genome — was determined from an individual discovered in the Neander Valley, Germany, in 1856. Since then, improvements in molecular techniques have enabled scientists at the Max Planck Institute for Evolutionary Anthropology to determine high quality sequences of the autosomal genomes of several Neanderthals, and led to the discovery of an entirely new group of extinct humans, the Denisovans, who were relatives of the Neanderthals in Asia.

However, because all specimens well-preserved enough to yield sufficient amounts of DNA have been from female individuals, comprehensive studies of the Y chromosomes of Neanderthals and Denisovans have not yet been possible. Unlike the rest of the autosomal genome, which represents a rich tapestry of thousands of genealogies of any individual’s ancestors, Y chromosomes have a peculiar mode of inheritance — they are passed exclusively from father to son. Y chromosomes, and also the maternally-inherited mitochondrial DNA, have been extremely valuable for studying human history.

Sep 27, 2020

MRI and PET Reveal Parkinson’s Is Two Diseases

Posted by in categories: biotech/medical, neuroscience

Advanced imaging shows Parkinson’s can begin as brain-first or body-first.

Sep 27, 2020

160 Genes Linked to Brain Shrinkage in Study of 45,000 Adults

Posted by in categories: biotech/medical, neuroscience

Researchers have identified 160 genes linked to brain shrinkage in adults. The genes appear to be involved in brain development, vascular and neurodegenerative diseases, and some psychiatric conditions.0 genes linked to brain shrinkage in adults. The genes appear to be involved in brain development, vascular and neurodegenerative diseases, and some psychiatric conditions.0 genes linked to brain shrinkage in adults. The genes appear to be involved in brain development, vascular and neurodegenerative diseases, and some psychiatric conditions.

Sep 27, 2020

Epigenetic Clocks: Which Has The Best Correlation For Aging and Age-Related Diseases?

Posted by in categories: biotech/medical, genetics, life extension

11 epigenetic clocks have been published since 2011, but which is best for predicting aging and age-related disease? In this video, I present findings from a recent publication, “Underlying features of epigenetic aging clocks in vitro and in vivo”, that compared data for 11 epigenetic clocks, and derived a new epigenetic clock, the meta-clock.

Sep 26, 2020

University Obtains New Patent for Poison Ivy, Oak Vaccine

Posted by in category: biotech/medical

Circa 2019


OXFORD, Miss. – The University of Mississippi has been issued its fourth patent for a product that could prevent the painful itching and rash due to exposure to poison ivy, poison oak and poison sumac.

The compound is based on research conducted in the UM School of Pharmacy and at ElSohly Laboratories Inc. Hapten Sciences, a Memphis-based biopharmaceutical company, obtained a worldwide, exclusive license for the technology from the university in 2010 and has conducted extensive preclinical and clinical development work since then.

Continue reading “University Obtains New Patent for Poison Ivy, Oak Vaccine” »

Sep 26, 2020

China prepares to declare victory in global vaccine race — and assures the world theirs is safe

Posted by in category: biotech/medical

SinoVac has developed one of the four Chinese vaccines in last-stage human trials as Beijing throws open doors to new production facility.

Sep 26, 2020

Blood Test Analysis: 100 — 111y (Centenarians, Semi- and Super-Centenarians)

Posted by in categories: biotech/medical, life extension

In order to slow aging, it’s important to know how circulating biomarkers change during aging, and how these biomarkers are associated with risk of death for all causes. In this video, I discuss blood test data for the oldest old, including centenarians (100 — 104y), semi-centenarians (105 — 109y), and super-centenarians (110y+).