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Tag: "are" at biology news

A gene's first 'kiss' sets off that affair known as puberty

Puberty, that awkward phase when boys and girls are primed for their sexual reproductive years as men ...he kisspeptin protein molecule produced by KiSS-1, are key to the initiation of puberty, when GnRH is released," Dr. Plant said. "However, it's unlikely th...

Chemists create 'Superbowl' molecule; May lead to better health

...limited carrying capacity. "The compounds we made are bigger versions of these original bowl molecules,"...the image of a sports stadium, which the molecules are similar to in shape." Appropriately, the researcher is also a football fan and watches the Super Bo...

DNA Molecules Used To Assemble Nanoparticles

...s can be specifically targeted to cancer cells and are small enough to enter a diseased cell, either kill...d fluorescence on the other end. Folate receptors are over-expressed on the surface of cancer cells, so these dendrimer clusters would tend to flock to th...

Bioartificial kidney under study at MCG

...ialysis three to four times a week. Since kidneys are constantly working, it may seem logical that longe...cates a fraction of the work of the kidneys, which are involved in diverse functions ranging from regulating vitamin D to modulating the immune response. "...

Wisconsin scientists grow critical nerve cells

...ientists from the University of Wisconsin-Madison, are important because they provide critical guideposts...ng motor neurons, Zhang believes, may be that they are one of the earliest neural structures to emerge in a developing embryo. With the ticking clock of de...

New push for public health, AIDS spending at African Union summit

...S, which killed 2.3 million Africans in 2004. "We are definitely optimistic that this time there will be... spokeswoman Shehnilla Mohamed said. "Governments are learning that fighting AIDS is not just a health issue but a development issue," she said. "Now th...

Association of herpesvirus with lung disorder questioned

...ry pulmonary hypertension and infection with HHV-8 are uncommon, Katano and co-authors explained. Human h...he lung, and may lead to heart failure. Some cases are associated with genetic susceptibility, the investigators noted, but the pathogenesis of most cases ...

Man and mouse share genome structures

...investigator Stuart L. Schreiber. Other co-authors are from the Broad Institute of MIT and Harvard, and Affymetrix. Their findings are published in the January 28, 2005 issue of Cell. "Now that the human genome has been sequenced, it ...

Jump-starting T Cells In Skin Cancer

...mor proteins. How these vaccines work and why they are only effective in some patients remains unclear. P...the characteristics of the T cell populations that are expanded after vaccination may help in the development of more effective anti-tumor vaccines. Tumor...

Molecular biology fills gaps in knowledge of bat evolution

...en they diversified and how different bat families are related to each other," Springer said. "It also quantifies the fraction of the fossil record that is missing for bats." The team, using DNA sequencing, analyzed data from portions of 17 nuclear genes from representatives of all bat families. Their ...

Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats

...at the harmful effects of saturated and trans fats are set in motion by a biochemical switch, or co-activ...biology at Harvard Medical School. Saturated fats are found in fatty cuts of meat, whole-milk dairy products, butter, and palm and coconut oils; they are ...

A new mechanism of regulating RNA degradation

...f its functions in the common fruit fly Drosophila are understood. "But no one knew what Staufen1 did in human cells," said Maquat, even though its presence in mammalian cells has been recognized for several years. "We were surprised to find that Staufen1 interacts with Upf1," she added. "This is a whol...

FDA Approves Human Hookworm Vaccine for Phase I Safety Trials

...f its functions in the common fruit fly Drosophila are understood. "But no one knew what Staufen1 did in human cells," said Maquat, even though its presence in mammalian cells has been recognized for several years. "We were surprised to find that Staufen1 interacts with Upf1," she added. "This is a whol...

Deficient DNA Repair Capacity Associated With Increased Risk Of Breast Cancer

...cies in the ability of cells to repair damaged DNA are associated with an increased risk of breast cancer...s write. "It is unclear at this time whether there are any interventions that could alter DNA repair capacity and what effect such interventions might have...

Spleen may be source of versatile stem cells

...d pocket of primitive stem cells in thespleen that are important for healing several types of damage orin... an adult mammal."Co-authors of the SAGE KE report are first author Shohta Kodama, MD,PhD, of the MGH Immunobiology Laboratory, and Miriam Davis, PhD, ofGe...

Genes In The Interferon System Important In Systemic Lupus Erythematosus

...edicalSciences at Uppsala University. The findings are being published todayon the Web page of the highly...American Journal of HumanGenetics. "These findings are probably the first genetic pieces of ahuge 'interferon puzzle,' with whose help it will be possible ...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...of California, Santa Barbara. The UCSB scientists are making new contributions to this field of inquiry ...es on the sea floor to the west of Central America are reported by Haymon, lead author, and three other UCSB geologists in the February issue of the journa...

UAB scientists discover the origin of a mysterious physical force

...les, such as DNA and other biomolecules, when they are very close to each other in aqueous media. This fo...is blowing, at a microscopic level water molecules are gently attracted towards the direction in which an electric field is pointing. However, when the wat...

Researchers discover way to make cells in the eye sensitive to light

...n some forms of hereditary blindnessphotoreceptors are lost entirely, but the retinal ganglion cells, the...rm ofhereditary blindness where the rods and cones are destroyed, but therest of the eye and retina remains intact. By switching on themelanopsin it could ...

Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants

... science, chemistry and plant biology.The findings are the result of an interdisciplinary research teamin...otein molecules with fluorescent tags.Quantum dots are much more resistant to photobleaching thanconventional fluorescent markers and their small size make...

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