Positive-feedback System Ensures That Cells Divide

1 vote

ScienceDaily (Aug. 11, 2008) In the life of every cell, theres a point of no return. Once it enters the cell cycle and passes a checkpoint known as Start, a cell will follow the steps it needs to divide no matter what changes might occur in its environment. Submitted by: kapora | Visited 5 times | Comments 0

♦ Exhausted B cells hamper immune response to HIV

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Recent studies have shown that HIV causes a vigorous and prolonged immune response that eventually leads to the exhaustion of key immune system cells--CD4+ and CD8+ T-cells--that target HIV. These tired cells become less and less able to fight the virus, and the cells' fatigue contributes to the inability of an HIV-infected person's immune system to clear the virus from the body. Now... Submitted by: hank russell - Visited 5 - Comments 0 - Write first comment

♦ How Vitamin A Promotes Cancer Growth ?

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The researchers found that vitamin A, when applied to breast cancer cells, triggers genes that can push stem cells embedded in a tumour to morph into endothelial cells. These cells can then build blood vessels to link up to the body's blood supply, promoting further tumour growth. They showed that in cancer cells, vitamin A seems to turn on cancer stem cells... Submitted by: tehcaveman - Visited 3 - Comments 0 - Write first comment

♦ Tom Hanks and Howard Not Welcome In Rome Churches.

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But Rome's diocese has told producers they'll have to film elsewhere, due to the controversial nature of the plot. A spokesman for the diocese says, "It's a film that treats religious issues in a way that contrasts with common religious sentiment. "We would be helping them create a work that might well be beautiful but that does not conform to our views". Submitted by: campolar - Visited 6 - Comments 0 - Write first comment

♦ Drug therapy to bolster immune system cells found effective toward childhood cancer

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Click here for more information. CINCINNATI, OH Researchers from The University of Texas M. D. Anderson Cancer Center have found a possible approach to therapy that may make cancer cells more sensitive to attack by immune system cells while making the immune system cells more powerful. The combination has the potential to treat different types of childhood cancer, including osteosarcoma... Submitted by: eXe - Visited 6 - Comments 0 - Write first comment

♦ Stocks vs. bonds: There is no magic formula

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Q: I'm retiring in a few years and still have 85% of my nest egg in stocks. Should I reduce my stock exposure and move to bonds or an annuity? A: Everyone wants that magic number. That easy rule of thumb. A percentage that determines, at each age, how much money they should have in bonds and in stocks. If that appeals to you, there's no shortage of bromides. Submitted by: delhi_wala - Visited 12 - Comments 0 - Write first comment

♦ Vitamin A Pushes Breast Cancer To Form Blood Vessel Cells

1 vote

ScienceDaily (July 17, 2008) Researchers at Georgetown University Medical Center have discovered that vitamin A, when applied to breast cancer cells, turns on genes that can push stem cells embedded in a tumor to morph into endothelial cells. These cells can then build blood vessels to link up to the body's blood supply, promoting further tumor growth. Submitted by: Ariestoteles - Visited 2 - Comments 0 - Write first comment

♦ Stem Cells May Treat Muscular Dystrophy

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The researchers have revealed that they derived the muscle-building stem cells from a larger pool of so-called satellite cells, which normally associate with mature muscle fibres and play a role in muscle growth and repair. They say that besides their contributions to mature muscle, the injected cells also replenished the pool of regenerative cells normally found in muscle. According to them... Submitted by: Cyrus_vtn - Visited 3 - Comments 0 - Write first comment

♦ Vitamin A pushes breast cancer to form blood vessel cells

1 vote

Washington, DC Researchers at Georgetown University Medical Center have discovered that vitamin A, when applied to breast cancer cells, turns on genes that can push stem cells embedded in a tumor to morph into endothelial cells. These cells can then build blood vessels to link up to the body's blood supply, promoting further tumor growth. They say their findings... Submitted by: DaisyDaisy - Visited 3 - Comments 0 - Write first comment

♦ Adult stem cells activated in mammalian brain

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Adult stem cells originate in a different part of the brain than is commonly believed, and with proper stimulation they can produce new brain cells to replace those lost to disease or injury, a study by UC Irvine scientists has shown. Evidence strongly shows that the true stem cells in the mammalian brain are the ependymal cells that line the ventricles in the brain and spinal cord... Submitted by: kriss05 - Visited 7 - Comments 0 - Write first comment

♦ Opel/Vauxhall Insignia to feature traffic sign recognition, Saturn Aura next?

1 vote

Opel has revealed that its all-new Insignia sedan will feature a new camera system that will not only act as a lane departure warning system, but will also double as a traffic sign recognition system. Opel claims that the Insignia will be the first production model to use the new technology. The system relies on one windscreen-mounted camera to view lane markings and traffic signs... Submitted by: domainboom - Visited 5 - Comments 0 - Write first comment

♦ Exhausted B cells fail to fight HIV

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Antibodies stick to HIV particles, preventing them from infecting other cells and triggering their destruction by immune cells. This antibody response starts out strong in HIV-infected individuals but eventually peters out. To find out why, scientists from the National Institute of Allergy and Infectious Diseases examined the cells that make the antibodies, known as B cells. Submitted by: guelph - Visited 4 - Comments 0 - Write first comment

♦ Firefox v. Safari Round 3: JavaScript crown goes to Safari

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You may remember a couple months ago there was some contention whether Safari or Firefox had the fastest JavaScript performance. Apple had claimed Safari 3 was the fastest when compared to Firefox 2, though improvements in Firefox 3 betas had narrowed or eliminated that gap. Zimbra, a company that makes a web-based collaboration suite, has now performed some new benchmarks that show Safari on top. Submitted by: dawggone - Visited 3 - Comments 0 - Write first comment

♦ Review: 2009 Toyota Corolla XLE

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Although second from the bottom of the Toyota model lineup, the 2009 Toyota Corolla inherits tech that goes all the way up to Toyota's high-end Lexus brand. The optional navigation system on the Corolla uses a similar interface to that in the Lexus GS 460. And the Corolla also gets electric power steering, as does the Lexus. Unfortunately... Submitted by: tonyc - Visited 34 - Comments 0 - Write first comment

♦ New Approach Sheds Light On Ways Circadian Disruption Affects Human Health

1 vote	Researchers have discovered that vitamin A, when applied to breast cancer cells, turns on genes that can push stem cells embedded in a tumor to morph into endothelial cells. These cells can then build blood vessels to link up to the body's blood supply... Submitted by: eRiQ - Visited 1 - Comments 0 - Write first comment

♦ U-M study: Herceptin targets breast cancer stem cells

1 vote	ANN ARBOR, Mich. A gene that is overexpressed in 20 percent of breast cancers increases the number of cancer stem cells, the cells that fuel a tumor's growth and spread, according to a new study from the University of Michigan Comprehensive Cancer Center. The gene, HER2, causes cancer stem cells to multiply and spread... Submitted by: bstunt - Visited 3 - Comments 0 - Write first comment

♦ Coffee's Aroma Kick-starts Genes In The Brain

1 vote

In experiments with laboratory rats, they found that coffee aroma orchestrates the expression of more than a dozen genes and some changes in protein expressions, in ways that help reduce the stress of sleep deprivation. In an effort to begin filling that gap, they allowed lab rats to inhale coffee aroma, including some rats stressed by sleep deprivation. Submitted by: finspin - Visited 6 - Comments 0 - Write first comment

♦ Crytek's CryENGINE 2 Heads to China

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Crytek officials said that it will be the first time that the studio will exhibit CryENGINE 2 in China, a region poised for explosive gaming growth. A May 2008 report from Niko Partners said that China's 46 million gamers spent $1.7 billion on online games in 2007, up 71 percent from 2006. Online revenue is expected to hit $2.5 billion this year, and $6 billion in 2012. In China... Submitted by: zelv - Visited 7 - Comments 0 - Write first comment

♦ Genes That Control Embryonic Stem Cell Fate Found

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The researchers say that the genes may either prod or restrain stem cells from drifting into a kind of limbo, which lies between the embryonic stage and fully differentiated cells like bone, muscle or fat. They believe that knowing the genes and proteins that control a cell's progress toward the differentiated form may help accelerate the process... Submitted by: ryan_uk - Visited 2 - Comments 0 - Write first comment

♦ Scientists Find Herpes Virus' Achilles Heel

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Bryan Cullen said that his team had found clues to how a gene called LAT, switched on by the herpes virus, works. Describing HSV-1 as a docile beast, the researcher pointed out that it could snooze inside a person"s neurons, secluded from drugs and the immune system. He said that scientists had for long suspected that LAT was the key to herpes' ability to remain dormant inside nerve cells... Submitted by: hyper - Visited 4 - Comments 0 - Write first comment

♦ Dartmouth researchers discover gene signatures for scleroderma

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(Georgetown University Medical Center) Researchers at Georgetown University Medical Center have discovered that vitamin A, when applied to breast cancer cells, turns on genes that can push stem cells embedded in a tumor to morph into endothelial cells. These cells can then build blood vessels to link up to the body's blood supply... Submitted by: IwhiC - Visited 2 - Comments 0 - Write first comment