CALIFORNIA | LOCAL
November 20, 2013 |
DNA and proteins are arguably the most important components of the cells of living creatures. Both are produced by stringing together long chains of individual molecules - amino acids in the case of proteins and nucleotides in DNA. Understanding the identity of the individual molecules in these chains and the sequence in which they are strung together proved to be one of the major biological challenges of the last century. Only by unlocking these sequences would scientists be able not only to understand the fundamental workings of biochemistry, but also to duplicate it. In the early 1950s, British biochemist Frederick Sanger of Cambridge University developed the first viable technique for determining the amino acid sequence of proteins and used it to describe the structure of insulin, which is composed of 51 amino acids.
October 7, 2013 |
Three scientists who study the inner workings of cells have won the 2013 Nobel Prize in physiology or medicine for their work in unraveling the mystery of how proteins, hormones and other molecules are moved around inside cells and exported to other parts of the body. The Nobel committee lauded Randy W. Schekman of UC Berkeley, Thomas C. Suedhof of Stanford University and James E. Rothman of Yale University for making known "the exquisitely precise control system for the transport and delivery of cellular cargo.
August 2, 2013 |
Joseph J. Colella has performed more than 4,000 weight-loss surgeries. But the bariatric surgeon at St. Margaret's Hospital at the University of Pittsburgh Medical Center would like to keep people from needing the OR by finding practical strategies to keep obesity at bay. We talked with him about fiber. Is a high-fiber diet important for weight loss? The conventional wisdom is that a diet high in fiber is important for weight loss and overall weight management. While there is some general truth to this, the reality is that the priority of a high-fiber diet in the weight loss solution is far from the top of the list.
June 18, 2013 |
Taco Bell will test a new Power Protein menu and zero-calorie drinks later this summer as the Mexican-style chain aims to convince Americans that its offerings include healthful choices. The Irvine-based chain will experiment first for five or six weeks in Dayton, Ohio, where it has roughly 40 stores. The company, which has nearly 6,000 restaurants in the U.S., is looking at 2014 for a more wide-scale launch of the new menu and beverages. The Power Protein menu features items that include more than 20 grams of protein but 450 calories or less. A burrito, for example, features a double portion of chicken or steak with 400 and 420 calories, respectively.
May 18, 2013 |
For more than 20 years, Kristine Kidd tasted what came her way as the food editor at Bon Appetit magazine. But she never felt great. "I had digestive issues my whole life," she says, but 2 1/2 years ago, the aching joints, bloating, fatigue and digestive problems became so severe she couldn't ignore the symptoms of celiac disease. She had already left her job and started doing some research, she says in the roomy, sunny kitchen of her hilltop home in Topanga Canyon. "I was so miserable.
May 18, 2013
What is gluten? Gluten is a protein that is found in certain grains, including wheat, barley and rye and triticale (a cross between wheat and rye). What problems prompt people to avoid gluten? Gluten causes inflammation of the small intestine in people with celiac disease, which is an autoimmune disease diagnosed with a blood test or biopsy; other symptoms include digestive problems, anemia, fatigue, headaches and joint pain. Avoiding gluten is the treatment, though there is no cure.