Category Health/Medical

Age vs. Genetics: Which is More Important for Determining How we Age?

The relative importance of genetics and age in controlling gene expression as a function of evolutionary constraints. Genes further to the right along the x-axis are more evolutionarily “constrained,” and thus more likely to be important in human disease. (Image credit: Peter Sudmant, UC Berkeley)

Amid much speculation and research about how our genetics affect the way we age, a University of California, Berkeley, study now shows that individual differences in our DNA matter less as we get older and become prone to diseases of aging, such as diabetes and cancer.

In a study of the relative effects of genetics, aging and the environment on how some 20,000 human genes are expressed, the researchers found that aging and environment are far more important than genetic variation in af...

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Researchers find Link between Immune Cells’ Closest Neighbors and Survival Time in Patients with Pancreatic Cancer

Immune cells
Immune cells called myelomonocytes (green) cluster near pancreatic cancer cells (red). Credit: Haoyang Mi, Johns Hopkins Medicine

Researchers from Johns Hopkins Medicine have discovered that the organization of different types of immune cells within pancreatic tumors is associated with how well patients with pancreatic cancer respond to treatment and how long they survive. The new findings, published Sept. 16 in Cancer Research, could eventually lead to new ways of treating pancreatic cancer, which has the highest mortality rate of all major cancers.

“Mapping the location of certain immune cells associated with a tumor could be a new biomarker to predict patient survival,” says Aleksander Popel, Ph.D...

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Scientists Discover Dual-function Messenger RNA

central dogma
The central dogma of molecular biology showing what happens in this study.

For the very first time, a study led by Julian Chen and his group in Arizona State University’s School of Molecular Sciences and the Biodesign Institute’s Center for the Mechanism of Evolution, has discovered an unprecedented pathway producing telomerase RNA from a protein-coding messenger RNA (mRNA).

The central dogma of molecular biology specifies the order in which genetic information is transferred from DNA to make proteins. Messenger RNA molecules carry the genetic information from the DNA in the nucleus of the cell to the cytoplasm where the proteins are made. Messenger RNA acts as the messenger to build proteins.

“Actually, there are many RNAs (ribonucleic acids) that are not used to make proteins,”...

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Combining Time-Restricted Eating and HIIT Improves Health Measures in Women with Obesity

Both time-restricted eating (TRE) and high-intensity interval training (HIIT) have been shown to improve cardiometabolic health in people who are overweight and at risk of serious disease. Now a randomized, controlled trial has tested whether combining these two approaches is more effective than either of them on their own. The results, publishing in the journal Cell Metabolism on October 4, show that the combination improved the average long-term glycemic control compared to a no-intervention control group and induced 2-fold greater reductions in fat mass and visceral fat area compared with each intervention in isolation.

“Isolated TRE and HIIT have received increasing attention for being effective and feasible strategies for at-risk populations,” says senior author Trine Moholdt,...

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