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Tag: "maintain" at biology news

Lactose intolerance linked to ancestral environment

...rying flourished and passed on gene mutations that maintain lactase into adulthood. The research, he said, is an example of Darwinian medicine, a new interdisciplinary field of science that takes an evolutionary look at health, and considers why, rather than how, certain conditions or symptoms develop. Sherma...

Birds and bats sow tropical seeds

...opical regions) is an extremely inefficient way to maintain and promote species diversity." Howe hopes the project -- which he expects will run for 20 years or more -- will attract additional funding sources. And he predicts close academic collaboration between UNAM and U.S. ecology programs like UIC's. "It...

New NIAID grants strengthen national biodefense and emerging infectious diseases research network

...or biodefense research activities * create and maintain supporting resources, including scientific equipment and trained support personnel, for use by other researchers within in the region and network * emphasize research focused on development and testing of vaccines, therapeutic and diagnostic conc...

Fish and chips: A fast track to understanding blood development

...n new blood cells in the bone marrow of adults. To maintain their numbers over time, blood stem cells also can divide and give rise to new blood stem cells through a process called self-renewal. What was not fully understood is which genes control the self-renewal and differentiation processes, and how these ...

The making of a fat cell

...ergy status and in response, secrete hormones that maintain whole-body energy balance," said study author Alan Saltiel. "However, you don't want too many, big fat cells. It's a careful balance, and many diseases are associated with either extreme." Lipodystrophies are disorders characterized by fat deficienc...

System Drastically Cuts Down Botulism Detection Time

...ergy status and in response, secrete hormones that maintain whole-body energy balance," said study author Alan Saltiel. "However, you don't want too many, big fat cells. It's a careful balance, and many diseases are associated with either extreme." Lipodystrophies are disorders characterized by fat deficienc...

Short-term Bio Sensors Monitor From Afar

...ergy status and in response, secrete hormones that maintain whole-body energy balance," said study author Alan Saltiel. "However, you don't want too many, big fat cells. It's a careful balance, and many diseases are associated with either extreme." Lipodystrophies are disorders characterized by fat deficienc...

Researchers develop new testing methods for potential monkeypox or smallpox outbreak

...t 50 percent of previously vaccinated people would maintain fully protective immunity against virulent poxvirus infections, and these findings are totally in line with what we expected. What this means is that there are more than 100 million people in the U.S. that have partial or even fully protective immuni...

Key To Stem Cell Transplant Success Is Tricking Immune System

...ergy status and in response, secrete hormones that maintain whole-body energy balance," said study author Alan Saltiel. "However, you don't want too many, big fat cells. It's a careful balance, and many diseases are associated with either extreme." Lipodystrophies are disorders characterized by fat deficienc...

No single gene for ageing

...e offspring and survive danger - not to repair and maintain cells. So the maintenance system in the body slowly breaks down. This topic was of great interest at the seminar for ageing at the conference "Functional genomics and disease" taking place in Oslo, Norway. Thomas Kirkwood is the director of the int...

US/African project deciphers deadly parasite genome

...'s genetic armory that it could use to trigger and maintain the cancerous state of the infected host cell." ...

Female butterflies go for sparkle -- not size -- when choosing to mate

...ain unchanged?' What are the selective forces that maintain these patterns constant through time in any one species in nature?" In this butterfly species, females make the ultimate decision about whether to mate. The UB researchers altered wing-pattern elements through carefully painting the wings or by pai...

MicroRNAs have shaped the evolution of the majority of mammalian genes

...er the course of evolution many mRNAs, in order to maintain their functions and ensure fitness of the organism...cer," says Farh. "Our genomes have good reason to maintain the microRNA targeting sites necessary for turning down these genes at the appropriate place and tim...

Gene therapy works in mice to prevent blindness that strikes boys

...s with the disease, don't have the healthy gene to maintain the retina. In terms of disease development, the condition in the mice was roughly equivalent to retinoschisis in a 10-year-old boy. Six months later, researchers looked at the interior of the eyes with a laser ophthalmoscope and found cyst formatio...

Regenerating worms help elucidate stem cell biology

...the absence of injury, these cells are critical to maintain a healthy worm, as they are also responsible for r... for some time, which is that it was required to maintain the stem cell, we think that's not happening here. The stem cells are being maintained by another me...

A new link between stem cells and tumors

...one that is just like the parent, which is kept to maintain the stock, and another that differentiates. This is what happens with neuroblasts. Cell division creates one large neuroblast and a smaller cell that can become part of a nerve. This process is controlled by events that happen prior to division. The ...

Oysters: The natural way to protect our shores

...e oysters' settlement; reefs are therefore able to maintain themselves as new recruits settle and grow. "Sust...tate placement of additional material over time to maintain their effectiveness," authors, Bryan P. Piazza, Patrick D. Banks, and Megan K. La Peyre state. The ...

A little telomerase isn't enough

...ve just half the normal amount of telomerase can't maintain their stem cells' chromosome ends, showing that a ...blood cells and those in the digestive system that maintain the intestines can't divide as many times as they should and die early. Because sperm and egg aris...

Scientists observe how a close bond activates the immune system

...ed bull's eye structure somehow allowed T cells to maintain their state of activation. But the new work shows that it is actually the outer edge of immunological synapse that boosts activation, not the center. Dr. Dustin's group is now conducting additional experiments to see if dendritic cells actively pre...

Max Planck researchers make a breakthrough in plant stem cell research

...regulatory genes, such as WUSCHEL work together to maintain this fine balance at the tip of the shoot. The working group led by Dr. Jan Lohmann at the Max Planck Institute for Developmental Biology in Tübingen, Germany has now solved this problem. The object of investigation was Arabidopsis thaliana, the "f...

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