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Tag: "suppress" at biology news

454 sequencing identifies HIV drug resistance at early stage

...roviral drug combinations that have the ability to suppress these resistant HIV strains which will lead to better clinical responses in patients. While treatment of HIV has been largely successful, with dramatic increases in survival over the last decade, a significant number of patients develop drug resist...

Ultra deep sequencing identifies HIV drug resistance at early stage

...roviral drug combinations that have the ability to suppress these resistant HIV strains, leading to better clinical responses in patients. It is estimated that 22 million people have died from AIDS and over 42 million people are living with HIV/AIDS worldwide. In the U.S. alone, 40,000 new infections occur ...

Marine phytoplankton changes form to protect itself from different predators

...vival chances, Phaeocystis globosa will enhance or suppress the formation of colonies based on whether nearby grazers prefer eating large or small particles. Based on chemical signals from attacked neighbors, Phaeocystis globosa enhances colony formation if thats the best thing to do for survival, or it sup...

LIAI researchers identify a potential role for retinoic acid in autoimmune and inflammatory diseases

...n a test tube and transfer them to the organism to suppress inflammation in vivo, said Dr. Cheroutre. This may offer an important new avenue for treatment of autoimmune diseases like colitis and rheumatoid arthritis or other inflammatory diseases, as well as potentially providing a mechanism for the control ...

Scientists decode RNA mystery, will help aim drug therapies

... into misreading aa-tRNAs, thus providing a way to suppress or bypass a mutation in a gene says Dinman. Howev...ve their accuracy in designing drug therapies that suppress mutations. You need to know whether youre targeting the near or non-cognate codon to get the right m...

Sensitivity to diverse range of chemotherapeutic drugs linked to common pathway

...n of this arrest, characterized by polyploidy, may suppress ceramide generation and promote cell survival. These data suggest that the taxane class of drugs may lack efficacy in tumors with high levels of chromosomal instability characterized by chromosomal numerical heterogeneity and provide a rational basis...

Analysis reveals extent of DNA repair army

...unanswered questions about BRCA1 is why it acts to suppress only some forms of cancer: The gene is "common in (all) cells, so why breast cancer and not some other kind of cancer"" Exploring the substrate domains of the ATM and ATR enzymes, Elledge added, is certain to yield deeper insight into numerous condit...

UF scientists identify cancer virus' genetic targets

...nes known to influence growth of blood vessels and suppress tumor cells. Scientists believe that with the regu...NA. Five of the most affected genes are known to suppress tumor and blood vessel growth and influence the bodys immune response, suggesting that the herpesvir...

News tips from the Journal of Neuroscience

...P) ubiquitinates and degrades wild-type AR and can suppress inclusions in other polyQ disease models. CHIP overexpression in cultured cells led to a significant decline in mutant AR as a result of enhanced degradation and ubiquitination. Endogenous CHIP colocalized with mutant AR in neurons of SBMA model mice...

MicroRNAs can be tumor suppressors

...ee and Anindya Dutta have shown that microRNAs can suppress the overexpression of a gene called HMGA2. This gene is related to creation of fatty tissue and certain tumors, as well as diet-induced obesity. MicroRNA is a single-stranded RNA that is typically only 20-25 nucleotides long and is related to regul...

Research team identifies additional genetic risk factors for Crohn's disease

.... When the research team used RNA interference to suppress the gene's activity in bacterially infected cells, decreased molecular action associated with autophagy confirmed that the process depends on ATG16L1 activity. "We have shown that ATG16L1 is essential for the normal autophagic process used to degr...

A genetic 'gang of 4' drives spread of breast cancer

...terference, in which RNA molecules are tailored to suppress expression of target genes. "We found that depriving aggressive metastatic tumor cells of these genes decreased both their ability to grow large aggressive tumors in the mouse mammary gland and also the ability to release cells from these tumors into...

Why small dogs are small

...or more mutations in the DNA next to the IGF1 gene suppress the genes activity, keeping small dogs from growing larger, says Lark, a distinguished professor emeritus of biology. Medium and large dogs also have the IGF1 gene, but they do not have the same piece of DNA next to it, so their size is not restri...

Discovery of 'master switch' for the communication process between chloroplast and nuclei of plants

... and do so in a way that the plant wont completely suppress its normal metabolisms and activate all of its stress metabolisms when faced with a lot of stress. If you want to generate a plant that is more tolerant, you need to deal with these two things." Added Koussevitzky: "Were trying to put the signaling p...

Preventing cancer without killing cells

...ctivating the senescence pathway was sufficient to suppress spontaneous tumorigenesis. Their findings suggest that, by halting cellular proliferation, p53-mediated senescence may act as an important tumour suppressor mechanism in aged cells....

Natural mechanism for immune suppression paves way for cancer trials

...une system. When they used an orphan drug known to suppress IDO in pregnant laboratory mice, fetuses were rejected. The findings, published in Science, led the scientists to suspect and later prove that tumors and some viruses, including HIV, express it as well. "Cancers should evoke a response from the...

Improving outcomes in premature births

...cs & Gynecology. In previous studies of drugs to suppress labor contractions to allow the fetus more time to develop in utero, some drugs were able to delay delivery, but none improved the babys health outcome. This study is the first to show that the baby benefited from the therapy, especially those who ar...

Brain fends off distractions

...off distractions. If we are busy with something we suppress disrupting external influences. If we are tired, w... who were mentally fatigued were no longer able to suppress the distraction. Moreover they scored less well in their task. Suppression is therefore not automati...

Could estriol be the elixir for MS?

...ively increases. It is thought that its role is to suppress a woman's immune system when she is pregnant, so that the fetus will not be seen by the body as a foreign "invader." "The beauty of estriol is that it can be given as a pill, not a shot, and also that it's not a new drug; it has decades of safety ...

Scientists identify a gene that may suppress colorectal cancer

...rt the discovery of a gene that, when mutated, may suppress colorectal cancer. To conduct the study, the rese...y modifier genes, which may function to enhance or suppress tumor initiation, growth and/or progression. Atp5a1 is a modifier gene, and it is located on the ...

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(Date:11/19/2008)...hreat to city dwellers posed by Southern Californi...een underestimated by officials. , Detailed part... California wild fires indicates that the composit... than is generally realized, according to a new pa...es in Southern California. , The paper, entitled...
(Date:11/19/2008)...The National Academy of Sciences (NAS) announced t...t Exchange," an initiative designed to connect ent...sts and engineers to help the creators of televisi...s incorporate science into their work. The Exchan... reach out to the entertainment community and prov...
(Date:11/19/2008)...8 -- From the collapse of star-forming clouds to t...stion of gasoline in your car engine to the coursi...light to the concentration of microscopic animals ...enomena are forms of fluid flow. , The 61st Annu...sion of Fluid Dynamics, which takes place from Nov...
(Date:11/19/2008)...08 -- From dolphins to clams to flying creatures l...ascinating creatures exhibit forms of fluid flow. ...cal Society (APS) Division of Fluid Dynamics takes...ention Center, researchers from across the globe w...ns in astronomy, engineering, alternative energy, ...
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