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2006-11-28


2006-11-22

{{| The discovery expands the known taxonomic breadth of metabolic disease and suggests that the study of microbes found in human intestines may provide a greater understanding of the root causes of human metabolic dysfunction. |}}


2006-11-21

{{| The Einstein and Albany researchers will use nanotechnology, which involves studying and working with material on the molecular level, to design a "microchip" version of the artificial blood vessel that Dr. Condeelis has used successfully in animals. The microchip will be assembled from nanoscale components so that several different functions can be carried out within a very small package. The goal: to implant these tiny microchips – just two to three cells in diameter and a tenth of a millimeter in length – in human tumors, where they would remain for days or weeks. The chips would report remotely to scanners that would "read" them on the nature of the cells that infiltrate them--in particular, on whether metastatic cells are present that would call for more aggressive cancer therapy. |}}


2006-11-20

{{| Abstract : Neoplasms are microcosms of evolution. Within a neoplasm, a mosaic of mutant cells compete for space and resources, evade predation by the immune system and can even cooperate to disperse and colonize new organs. The evolution of neoplastic cells explains both why we get cancer and why it has been so difficult to cure. The tools of evolutionary biology and ecology are providing new insights into neoplastic progression and the clinical control of cancer. |}}


2006-11-18

{{| The dynamics of evolution are fully in play within the environment of a tumor, just as they are in forests and meadows, oceans and streams. This is the view of researchers in an emerging cross-disciplinary field that brings the thinking of ecologists and evolutionary biologists to bear on cancer biology. |}}

{{| Dr. Yang, a researcher with Mayo Clinic's Department of Health Sciences, said that while gene expression profiling has been successfully used to classify various tumors and assess tumor stage, metastasis and patient survival rates, the evidence suggests that gene-based prediction for lung cancer is not yet entirely dependable. However, some results have been promising: gene profiling has reliably predicted patient survival for lung adenocarcinoma almost as well as established predictors. |}}

gene expression profiling을 연구하는 medical scientist가 고려해야 할 점

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2006-11-17


2006-11-15


2006-11-14

{{| Patients with HER-2/neu overexpression were given a therapy of dendritic cells (DC, which work with the B- and T-cells to trigger immune responses) that were treated with HER-2/neu to evoke an immune response. The participants received four weekly vaccinations into normal lymph nodes in their groins and were evaluated both pre- and post-vaccination for immune response, level of HER-2/neu expression, and cell infiltrates. |}}


2006-11-13

{{| Cell signaling mechanisms often transmit information via protein modifications, most importantly the reversible attachment of phosphate, the so-called protein phosphorylation. Researchers at the Max Planck Institute of Biochemistry in Martinsried have now developed a technology to identify and quantify the specific sites in proteins that get phosphorylated in answer to certain stimuli in living cells. Under the lead of Matthias Mann, the scientists found 6,600 phosphorylation sites - 90 percent of which were unknown - in 2,244 proteins and observed their temporal dynamics. All these phosphorylation sites are now listed in the newly created Phosida database to make them available for efficient use by scientists working in different areas, among them tumour researchers: Defects in cellular signaling often occur in many types of cancer (Cell, November 2, 2006). |}}


2006-11-10


2006-11-09

{{| The model developed by Shakhnovich and colleagues faithfully describes and catalogs countless interactions between the individual atoms that comprise proteins. In so doing, it essentially predicts, given a string of amino acids, how the resulting protein will fold -- the first computer model to fully replicate folding of a protein as happens in nature. In more than 4,000 simulations conducted by the researchers, the computer model consistently predicted folded structures nearly identical to those that have been observed experimentally. |}}


2006-11-08

{{| Next year, it will create an information hub where researchers can search for and submit structural information. Meanwhile, PSI scientists will continue to develop new methods and tools for protein structure studies that are being commercialized by industry for mainstream use. |}}


2006-11-03

{{| "The "healthspan" benefits we saw in the obese mice treated with resveratrol, such as increased insulin sensitivity, decreased glucose levels, healthier heart and liver tissues, are positive clinical indicators and may mean we can stave off in humans age-related diseases such as type 2 diabetes, heart disease, and cancer, but only time and more research will tell," says Sinclair, who is also a co-founder of Sirtris, a company with an author on this paper and which is currently in a phase 1b trial in humans with diabetes using an enhanced, proprietary formulation of resveratrol. |}}


2006-11-01

{{|In addition to noting that loneliness the night before predicted higher cortisol the next morning, Adam and colleagues found that people who experience anger throughout the day have higher bedtime levels of cortisol and flatter overall levels of the stress hormone, typically considered a risk factor for disorder. "High levels of cortisol in the evening are a kind of biological signature of a bad day," Adam noted.

The study also provided evidence that, in addition to simply being at the mercy of your daily experiences, cortisol also plays a role in influencing them. Individuals with lower levels of cortisol in the morning experienced greater fatigue during the day, a result with potential implications for understanding chronic fatigue.|}}


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