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Category: biotech/medical – Page 2,692

Runoff pitting low-fat vs. low-carb to lose weight results in a tie

Summary: A new study didn’t find much of a difference between healthy low-carb and low-fat diets. The people on both diets lost about the same amount of excess weight. [This article first appeared on LongevityFacts. Author: Brady Hartman. ]

Is cutting carbs or cutting fat is better? A new study published in the Journal of the American Medical Association, suggest that it may not matter much.

A team of researchers led by Christopher Gardner, a professor of medicine at the Stanford University School of Medicine, followed 609 overweight adults ages 18 to 50. The researchers put the study participants, consisting of equal numbers of men and women, on either a low-carb diet or low-fat diet for 12 months.

Brain rejuvenating protein found in young blood

Summary: UCSF scientists discover a protein in young blood that rejuvenates an aging brain. [This article first appeared on LongevityFacts. Author: Brady Hartman. ]

Scientists have long been searching for the factors in young blood that give it its rejuvenating powers to drug form for widespread public use.

A team of researchers led by Saul Villeda, Ph.D., an assistant professor of anatomy at UC San Francisco discovered a brain-rejuvenating enzyme that improved memory in adult mice when restored to youthful levels. The researchers say the new protein could lead to new therapies for maintaining the healthy brain function of humans.

Enzyme Designed Entirely From Scratch Opens a World of Biological Possibility

Ann Donnelly was utterly confused the first time she examined her protein. On all counts, it behaved like an enzyme—a protein catalyst that speeds up biological reactions in cells. One could argue that enzymes, sculpted by eons of evolution, make life possible.

There was just one problem: her protein wasn’t evolved. It wasn’t even “natural.” It was, in fact, a completely artificial construct made with random sequences of DNA—something that’s never existed in nature before.

Donnelly was looking at the first artificial enzyme. An artificial protein that, by all accounts, should not be able to play nice with the intricate web of biochemical components and reactions that support life.