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Tag: "which" at biology news

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

...tiation of puberty, as well as learn about KiSS-1, which in earlier rodent studies had been identified as a...t they act alone. Other signaling systems, some of which have probably yet to be identified in humans, help control GnRH release in primates." Besides learn...

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

...in the 1980s to mimic naturally occurring enzymes, which facilitate molecular synthesis and transport withi...applications." "I wanted a name for our compounds which acknowledged this and recognized their larger size and shape," says Sherburn. "'Superbowl' was perfe...

DNA Molecules Used To Assemble Nanoparticles

...attached lengths of single-stranded DNA molecules, which naturally bind to other DNA strands in a highly sp...er said. Baker foresees a nanoparticle cluster in which a single dendrimer carries three single-strands of DNA, each with a sequence specific to the DNA att...

Bioartificial kidney under study at MCG

...may opt for newer continuous dialysis therapies in which patients with renal failure receive dialysis aroun... replicates a fraction of the work of the kidneys, which are involved in diverse functions ranging from regulating vitamin D to modulating the immune respons...

Viral DNA sequence a possible trigger for breast cancer

...nism for virus-induced breast cell transformation, which has largely been attributed to the integration of viral DNA into locations that trigger the expression of host cancer-causing genes. An intriguing wrinkle to this study is the previously reported presence of sequences highly homologous to MMTV Env pr...

Wisconsin scientists grow critical nerve cells

...he third and fourth week of human development - in which stem cells could be successfully prodded to transf...ural cells into progenitor cells of motor neurons, which in turn developed in a lab dish into spinal motor neuron cells. The newly generated motor neurons, ...

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

...public health, helping to curb the spread of AIDS, which killed 2.3 million Africans in 2004. "We are defi...ugs that inhibit the progression of their disease, which has no known cure. But demand for free drugs vastly outstrips their supply, the cost of the drugs -...

Man and mouse share genome structures

...f histone proteins, and resembles a chain of beads which is then compressed into a working chromosome. Chem...er the regions of genome containing the HOX genes, which are key regulators of development. "In most of the genome, we see short stretches associated with a...

Adding Radiation Therapy To Chemotherapy Improves Survival In Patients With High-risk Breast Cancer

...ding to a 20-year follow-up of a randomized trial, which appears in the January 19 issue of the Journal of the National Cancer Institute. The British Columbia randomized radiation therapy trial was designed to determine the effect on survival of the addition of locoregional radiation therapy (radiation to...

Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down

...ding to a 20-year follow-up of a randomized trial, which appears in the January 19 issue of the Journal of the National Cancer Institute. The British Columbia randomized radiation therapy trial was designed to determine the effect on survival of the addition of locoregional radiation therapy (radiation to...

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

...rated fats did not. Evidence pointed to the liver, which is responsible for the body's synthesis of triglyc...at we have found is a missing link, a mechanism by which saturated fats and trans fats can do their dirty work," said Spiegelman, who carries out basic resea...

A new mechanism of regulating RNA degradation

... far involve the first step in gene expression, in which DNA is copied into RNA transcripts. However, recen...egrade RNAs by a previously undescribed mechanism, which the team called Staufen1-mediated degradation (SMD). Preliminary results suggest that SMD activity a...

FDA Approves Human Hookworm Vaccine for Phase I Safety Trials

... far involve the first step in gene expression, in which DNA is copied into RNA transcripts. However, recen...egrade RNAs by a previously undescribed mechanism, which the team called Staufen1-mediated degradation (SMD). Preliminary results suggest that SMD activity a...

Deficient DNA Repair Capacity Associated With Increased Risk Of Breast Cancer

... from blood samples taken from pairs of sisters in which one sister had been diagnosed with breast cancer and the other had not. They found that DNA repair capacity was lower in breast cancer patients than in the control subjects. Deficient DNA repair capacity was associated with a twofold increase in the...

Spleen may be source of versatile stem cells

... cells than can adult stem cells from bone marrow, which donot produce Hox11.The researchers also note that...ly evencells of the nervous system, development of which depends on thecorrect production of Hox11."We know that if you have a major loss of blood, the splee...

Genes In The Interferon System Important In Systemic Lupus Erythematosus

...researcherswho claimed that the interferon system, which is involved in the body'sdefense against viruses, ...m.The other gene codes for a transcription factor, which also plays animportant role in regulating the interferon effect. Further functionalanalyses will be ...

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

...rothermal fluid discharge into the Earth's oceans, which has been occurring ever since the oceans first for...bes of the Earth's crust because the strategies by which they survive may be similar to the earliest strategies of life on Earth, and perhaps also on other p...

UAB scientists discover the origin of a mysterious physical force

...ules are gently attracted towards the direction in which an electric field is pointing. However, when the w... Physical Review Letters. Water is the solvent in which most physical, chemical and biological processes take place. Therefore, it is essential to understan...

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

...entirely, but the retinal ganglion cells, thecells which signal to the brain, remain intact. The researcher... increasinglyaccepted that we have a third system, which uses melanopsin, that haslain undetected during decades of vigorous scientific investigation."Profes...

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

Made-to-measure skin and bones, which couldbe used to treat burn victims or patients who...isfigurements, may soon be a reality using inkjets which can printhuman cells.Scientists at The University of Manchester have developed thebreakthrough techn...

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