Tag: "regulation" at biology news
Fat cell hormone causes weight loss
...ed into the blood and are actively involved in the regulation
of metabolism. The best known fat hormone, leptin, decreases body weight by decreasing appetite and increasing metabolic rate. Leptin also reduces glucose and lipids. The researchers found that both adiponectin and leptin require the melanocortin pat...
Moderate iron deficiency affects cognitive performance - but iron supplementation improves it
...ndurance, an impaired immune response, temperature regulation
difficulties, changes in energy metabolism, and in children, a decrease in cognitive performance as well as negative affects on behavior. While iron deficiency was once presumed to exert most of its deleterious effects only if it had reached the lev...
How do animals exposed to 24-hour light retain their wake-sleep habits?
... likely have an adjustable daily program under the regulation
of a biological clock. But how do mammals in the Arctic which is characterized by months of full light followed by months of full darkness -- retain their sleep and awake habits in such unusual circumstances? After analyzing the reactions of cer...
APS announces four 2004 Young Investigators awards
...ocuses on time-dependent aspects of cardiovascular regulation
and the dynamic interaction of its underlying mech...lar beds to better understand short- and long-term regulation
of blood pressure. Bruce Schultz, Ph.D. Kansas State University The Lazaro J. Mandel Young Invest...
Specifying alcohol-related brain-damage among heavy social drinkers
...itive processes such as decision making, planning, regulation
of emotion and motivation, memory, and motor control. "These deficits may have an affect on the heavy drinkers' ability to judge his/her drinking as adversely affecting his/her life," he added, "and can also interfere with the drinker's decision to ...
Keck Futures Initiative announces grant recipients
...ied to the well-studied lactose and arabinose gene regulation
systems in E. Coli, paving the path towards automated reconstruction of more complex, unknown systems in the future. TERENCE HWA University of California, San Diego SPECIFICITY, CROSS TALK, AND EVOLVABILITY IN TWO-COMPONENT SIGNALING Hwa propo...
Evolution's mirror in a fish's spines
...rs discovered that relatively small changes in the regulation
of specific genes can lead to a phenomenon called ...alterations responsible for causing changes in the regulation
of Pitx1 . This kind of analysis will be particularly challenging, Kingsley said, because the natur...
Introduction of the 'Rett protein' in post-mitotic neurons rescues Rett Syndrome in mice
... is a protein believed to play a vital role in the regulation
of gene expression. It is expressed in all organs and found in especially high levels in the brain. The timing of MeCP2 activation coincides with the maturation of the central nervous system and recent reports suggest that MeCP2 may be involved in th...
American Society of Plant Biologists offers developing nations free access to science journals
... Guerinot is studying metal transport in plantsand regulation
of gene expression by metals with a primary focus oniron. Plant Physiology and The Plant Cell are two of the three most frequently cited plant science journals in the world. Following is a list of the developing nations that now have free access t...
Shared gene switch for all plants found
... said. This is the first demonstration of gene regulation
by a microRNA in non-flowering plants such as mosses and ferns. A similarly ancient system of regulation
by microRNAs has recently been found in animals, Floyd said. ...
JCI table of contents, 2 April 2004
...mechanisms at play in neuronal damage. TITLE: Bim regulation
may determine hippocampal vulnerability after injurious seizures and in temporal lobe epilepsy AUTHOR CONTACT: David C. Henshall Robert S. Dow Neurobiology Laboratories, Portland, Oregan, USA. Phone: 503-413-5260 Fax: 503-413-5465 E-mail: dhenshall@...
OHSU researchers discover possible connection between infant hormone exposure, obesity
...fe, and brain formation that likely impacts weight regulation
later in life. The research was conducted in mice..., OHSU has been involved in a number of key weight regulation
discoveries, including the identification of specific cells in the brain involved in weight control....
JCI table of contents, 15 March 2004
...sgenic mice. These studies indicate that improper regulation
of LIGHT itself may be a major underlying factor for IgAN and focus on its production and regulation
should shed more light on this disease. TITLE: Dysregulated LIGHT expression on T cells mediates int...
Deficits associated with prenatal alcohol exposure can be seen as early as infancy
...act on children's cognitive status and attentional regulation
skills," explained Julie A. Kable, assistant profe...are impairments in cognitive and later attentional regulation
skills," added Kable. "If one does not maximize learning efficiency then he or she experiences a cu...
Newly cloned gene key to global adaptation of wheat
... wheat VRN1 vernalization gene was involved in the regulation
of the transition from vegetative to reproductive ...ed that VRN2 is a new type of gene involved in the regulation
of other flowering genes. In winter wheat varieties, the VRN2 gene prevents the plant from developin...
Rimonbant shows promise in addressing multiple risk factors
...C System), believed to play a critical role in the regulation
of food intake and energy expenditure. "While the weight loss was clinically relevant, what is truly remarkable in the RIO-Lipids study is the significant effect rimonabant had on improving associated cardiovascular risk factors," said Jean-Pierre ...
Biology behind homosexuality in sheep, study confirms
...s to the processes involved in the development and regulation
of heterosexual, as well as homosexual, behavior." The results lend credence to previous studies in humans that described anatomical differences between the brains of heterosexual men and homosexual men, as well as sexually unique versions of the sam...
Biochemistry and Molecular Biology: Research at the Interface of Biochemistry and Human Health
...ids and obesity, obesity and minority populations, regulation
of lipid biosynthesis, and how changes in fat cells influence energy metabolism of the organism. Molecular Recognition and Catalysis organized by Jack E. Dixon, University of California at San Diego, with symposia on topics such as catalysis in h...
UN study shows environmental consequences from ongoing boom in personal computer sales
...cts of computers. These include: the environmental regulation
of manufacturing processes (e.g. setting standards for emissions from semiconductor factories) and the environmental characteristics of computer products (e.g. banning the use of lead and other heavy metals); mandatory product take-back, recycling sy...
Discoveries reveal that gene regulation is bipolar
... are often taken as representative of the types of regulation
governing most genes--but this appears not to be t... with the advent of DNA microarray technology, the regulation
of all genes within an organism can be studied simultaneously. "Genome-wide approaches allow us to ...
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