Tag: "carbohydrates" at biology news

Sugar-coated sea urchin eggs could have sweet implications for human fertility

...bindin protein. It was thought that the egg jelly carbohydrates that activate the bindin were similar in all sea urchin species. In reality, the jelly coating contains a general type of carbohydrate in the purple sea urchin but in other species the jelly becomes a secondary barrier to prevent cross-species breedi...

Study links high carbohydrate diet to increased breast cancer risk

... or more percent of their total energy intake from carbohydrates incurred a risk of breast cancer 2.2 times higher ... Mexico are characterized by higher consumption of carbohydrates and lower intake of fat and animal protein than those in more affluent western countries. The team...

Travelers' diarrhea not improved by restricted diet

...ouston Medical School. "The thought is that simple carbohydrates are easier to absorb during diarrhea and would be less likely to contribute to osmotic load and worsen diarrhea, and such a diet might speed the repair of the gut and avoid persistent symptoms," Dr. Ericsson said. "The problem is that we do not know ...

Oldest evidence for processing of wild cereals: starch grains from barley, wheat, on grinding stone

...s was an important nutritional advancement, making carbohydrates more readily available for uptake into the bloodstream. Grinding stones like the one found at Ohalo II have been excavated from other Old World sites dated to 13,000 45,000 years before present, but there has never been conclusive evidence to show t...

Ants protect plants better when jacked up on nectar

...wn as barrel cactus, or Ferocactus wislizeni. The carbohydrates and water supplied by the cacti are not readily available to ants elsewhere, Bronstein said. In one experiment, the researchers sealed up the nectaries with rubber cement to see if the ants would abandon a nectary-free cactus. "The ants were very pu...

New glycan arrays discover autoimmunogenic activities of SARS-CoV: concern over monkey vaccine

...resses antigenic structures that mimic the complex carbohydrates on human glycoprotein. Question about autoimmune ...SARS pathogenesis Expression of ASOR-like complex carbohydrates by coronaviruses is previously unrecognized. ASOR is an abundant human serum glycoprotein and the AS...

Was Atkins right?

...n the calcium balance. On the contrary, exchanging carbohydrates for proteins was beneficial regarding body composition, basal triglycerides, glucose, leptin, and insulin plasma concentrations. The results of the present study agree with the idea that long-term dietary management is of major importance to preventi...

Patients' cells from tumors, the immune system merged for customized cancer therapy

...isease or infection. Tumor cells produce proteins, carbohydrates and other molecules that are different than the healthy cells that are normally found in the human body. The immune system can recognize cancer-related molecules, but cancer cells often are difficult for the immune system to detect. Conversely, dend...

Scientists identify molecular link driving spread of skin cancer

...can, which is a protein that has lengthy chains of carbohydrates that extend outward from its protein core, giving it a structure similar to a bottle brush. Carbohydrate side chains, called glycosaminoglycans (GAGs), can interact with other molecules outside of the cell wall membrane. CD44 is produced by cells an...

Highlights of the July Journal of the American Dietetic Association

... Guide Pyramid, in particular with its emphasis on carbohydrates as a significant percentage of a daily diet, has been blamed by some people for the rise in excess weight and obesity in this country. However, according to a commentary by researchers from Tufts University, it's not the Pyramid that is to blame for ...

Gestational diabetes not found to alter the metabolic processes in obese pregnant women

...t differences in percentages of protein, lipids or carbohydrates in their diets across time or between groups, as d... increased maternal reliance on lipids rather than carbohydrates for meeting energy needs. Carbohydrates and amino acids are thus made available for feto-placental e...

UF researcher: New low-carb potato to debut in January

...s potato and the fact that it has 30 percent fewer carbohydrates compared to a standard Russet baking potato," said Chad Hutchinson, an assistant professor of horticulture with UF's Institute of Food and Agricultural Sciences. "The potato doesn't look or taste like anything that's now on the market, ...

Researchers establish first molecular link between eating and aging

...n mice. A mammal generally burns the protein and carbohydrates in its food immediately; it stores fat in special cells called white adipose tissue (WAT). When it reduces its caloric intake, the WAT stops storing fat and begins releasing it for metabolism. The paper's authors learned that fat is released from o...

Scientists find second way to kill cancer cells: Discovery opens possibilities for new therapies

...P by metabolizing a mixture of fats, proteins, and carbohydrates in a process termed oxidative phosphorylation. This explains why necrotic cell death, induced by the chemotherapeutic agents, was specific to cancer cells and did not affect healthy, non-proliferating cells. When PARP activation was blocked, necrot...

Protein-centric drug development and functional glycomics enrich biopharmaceuticals pipeline

...s, proteins and their interactions. In fact, these carbohydrates are moving beyond their regular roles as sugar sto...ately half a dozen drugs, in which manipulation of carbohydrates and proteins provides advanced drug properties. For example, Epogen a glycotherapeutic drug contai...

High-fat fast-food breakfast produces rush of inflammatory factors into blood stream, UB study finds

... influx of macronutrients (calories, fat, protein, carbohydrates and water) may alter cell behavior and activate genes to produce more powerful enzymes and mediators that potentially are more damaging to the lining of blood vessels. "The magnitude of this acute and transient effect is dependent on the type of mac...

'Telling people what they want to believe'

... "Dr. Atkins advocated substituting simple carbohydrates with high-fat animal protein foods" including baco...opular." Ornish recommends replacing simple carbohydrates with complex carbohydrates: eating a diet rich in fruits, vegetables, beans (including soy products)...

Carbohydrates offer some help in muscle protein synthesis, but not enough for the desired effect

...itive that a good number of Americans are avoiding carbohydrates and consuming high levels of protein and fat, in a...ories have been offered about the effectiveness of carbohydrates in maintaining an appropriate muscle protein balance. A new study may lead to a truce in the debate...

Other highlights in the February 4 issue of JNCI

...Glycemic load is a measure of how quickly a food's carbohydrates are turned into sugars by the body (glycemic index) in relation to the amount of carbohydrates per serving of that food. Some examples of foods with a high glycemic load are white breads, white r...

Scientists at Scripps Research describe new strategy for the synthesis of glycoproteins

...ed a new way of making glycoproteins-proteins with carbohydrates (sugars) attached. Methods for making glycosylate...t to scientists who want to understand the role of carbohydrates in protein structure and function, since the human body contains many heavily glycosylated proteins,...

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