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Tag: "double" at biology news

It's not all genetic: Common epigenetic problem doubles cancer risk in mice

...tes, Sweden and Japan has discovered that having a double dose of one protein is sufficient to change the no...umor there. Roughly 10 percent of people have this double protein dose as well. In the Feb. 24 online version of Science, the researchers report that mice en...

Topical treatment shown to inhibit HIV and herpes simplex virus infection

...e researchers conducted a prospective, randomized, double blind, placebo-controlled study among 20 HIV-infected women to assess the antiviral activity of PRO 2000 in cervicovaginal lavage (CVL) fluid collected before and one hour after administration of a single intravaginal dose of PRO 2000 gel or a matche...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

...production coupled with resistance to insulin -- a double whammy." Other researchers involved in the Joslin study included co-authors Jose C. Jimenez-Chillaron, Ph.D., Marcelino Hernandez-Valencia, M.D.; also Carolyn Reamer, Simon Fisher, M.D., Ph.D., Allison Joszi, Ph.D., Michael Hirshman, Aysin Oge, M.D....

Researchers reveal the infectious impact of salmon farms on wild salmon

...ale fish farming in wild salmon habits. "There's a double bottom line here. The full ecological costs of industrial scale salmon farming must be quantified as well as the economic ones," says Volpe. "For the migratory runs we studied, there may be very little time left." ...

Color-blind method opens new doors in DNA sequencing

...such a way that A binds T and G binds C, forming a double helical structure. Each person's genome consists of a unique ordering of some 3 billion base pairs, and 'DNA sequencing' refers to the process scientists use to read out the order of those nucleotides. In sequencing, scientists first extract DNA fro...

Papers of DNA Pioneer and Nobel Laureate Francis Crick Added to National Library of Medicine’s Profiles in Science Web Site

... Web site. Don't miss Crick's sketch of the DNA double helix . This latest collection on Profiles in Sc...04) is inextricably linked to the discovery of the double helix of deoxyribonucleic acid (DNA) in 1953, considered the most significant advance in biology sin...

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

...g cells. Whereas cell membranes are created from a double layer of fatty phospholipid chains, a polymersome is comprised of two layers of synthetic co-polymers. Like a living cell, the polymersome membrane has a hydrophobic core. The study shows that the fluorophores evenly disperse within this core, giving...

Researchers find new genes necessary to make embryo

...ying the function of genes, the researchers almost double previous estimates of how many genes are required to make an embryo. Their study focused on the genes expressed by the mother and imparted to the egg, ready to be used during the earliest stages after fertilization. They discovered over 150 additiona...

Growth in biomass could put US on road to energy independence

...le biomass consumption by electric utilities would double every 10 years through 2030. During the same time, production of chemicals and materials from bio-based products would increase from about 12.5 billion pounds, or 5 percent of the current production of target U.S. chemical commodities in 2001, to 12 ...

Human Cells Filmed Instantly Messaging for First Time

...le biomass consumption by electric utilities would double every 10 years through 2030. During the same time, production of chemicals and materials from bio-based products would increase from about 12.5 billion pounds, or 5 percent of the current production of target U.S. chemical commodities in 2001, to 12 ...

Youth With HIV Take More Risks After New Meds Introduced

...ee months. On average, post-HAART youth had nearly double the sexual partners as pre-HAART youth. Post-HAART youth were also more likely to have had a sexual partner who used injection drugs. The post-HAART group also knew their HIV diagnosis at a younger age and were in worse health than the pre-HAART gro...

NYU and MSKCC research provides model for understanding chemically induced cancer initiation

...ternal binding site in the minor groove of the DNA double helix. However, in the presence of this single met...e is sandwiched between adjacent base pairs in the double helix. "Such conformational differences in methylated and unmethylated DNA sequences may be signifi...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

... nitrogen pollution, and their use is predicted to double or triple over the next 50 years." ...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

... on whether CDK2 activity was repressed. They then double checked those findings by "putting CDK2 back," Ueno says. "We found that the effects of Tarceva were reduced when CDK2 was given back to the cells, so this shows us that CDK2 is the real target of Tarceva. "This presents a concept that describes how...

Doing a spin with DNA

...th strands wind around each other in the form of a double helix with the base pairs acting as the 'stairs' in a staircase. The sequence of these base pairs stores genetic information. During cell division genetic material is copied and the enzymes responsible for this must be able to transcribe the base seq...

Newest HIV drugs should be used with FUZEON(R)

... in their viral load and furthermore they also had double the increase in immune cell count1, compared to pa... 2 studies, where adding FUZEON was seen to almost double the number of patients reaching undetectable, when combined with one of the latest boosted PIs such ...

Caloric restriction won't dramatically extend life span in humans: UCLA research

...cally longer lives for them. "You can practically double their life span," Phelan said. "The same result has been found in fish, spiders and many other species. If it works for them, some thought, it should work for us; I'm here to tell you it doesn't." Phelan, co-author of the book, "Mean Genes," conduct...

Fluorescing lab worms signal longer life spans

...ng that mutating a single gene in roundworms could double their life span -- the first evidence that the lifespan of an animal could be increased by genetic alteration. Since then, researchers around the world have been tinkering with proteins and genes of C. elegans in attempts to understand more about how...

Wild grasses and man-made wheats advance research capabilities

...1 percent a year in grain yield," he said. "Can we double our genetic gain by doubling our variability?" CIMMYT predicted that within a few years, more than one-half of its advance lines of wheat will trace back to a synthetic wheat. And that's from a project started less than 20 years ago, in a world wher...

Analysis of flower genes reveals the fate of an ancient gene duplication

...these genes are mutated, the plants form so-called double flowers, in which petals and sepals replace stamens and carpels. AG and PLE are very closely related genes, and they clearly have nearly identical function, suggesting that they are derived from the same single gene inherited from a common ancestor....

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