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Tag: "phase" at biology news

Study reveals classic symbiotic relationship between ants, bacteria

...were actually colonies of bacteria. In the latest phase of his research, Currie, who began this study when he was at the University of Kansas, and his team removed the external blooms of bacteria from two ant species in the genus Cyphomyrmex and examined the exoskeleton beneath with a high-powered microsc...

Heparin prepared synthetically could replace animal-derived drug

...ulfate." The process also can be applied in solid phase synthesis as a tool for screening lead compounds with heparin-like structures for drug discovery, according to the researchers. The findings were published Jan. 13, 2006, in Biochemical and Biophysical Research Communication in a paper titled "Enzyma...

All placebos not created alike

...evices compared with placebo pills. In the second phase of the study, the same patients were randomized ag... the real drug in the bloodstream). In the second phase of the study, patients receiving sham acupuncture reported a more significant decrease in pain and s...

VCU Massey Cancer Center researchers identify a new class of anti-cancer drugs based on platinum

...ntrations of three anti-cancer drugs including the phase II clinical drug, BBR 3464, cisplatin and the new trinuclear platinum compound. In a laboratory model, human ovarian cancer cells were exposed to each drug. "In platinum antitumor chemistry our objective is to design and develop complexes acting by...

A case of mistaken molecular identity

... parasite remains active inside them, in a chronic phase of infection, quietly invading cells and stimulating the immune system. As a result, people can develop heart and gastrointestinal problems months or years after being infected. Some 30,000 people die each year from Chagas disease, according to the W...

Thinner and younger

...y and Fontana are getting ready to launch a second phase of the CALERIE study, to look at the effects of calorie restriction over the course of two years. "We know people on calorie restriction will lose weight," says Fontana. "But this study isn't a weight-loss study. We're hoping to learn more about wh...

Even fish don't swim well when they're young!

...he larvae suffer a lot of drag during the coasting phase and this could be something that affects other typ...poor hatchling swimming, one focusing on the burst phase and the other on the coast.The former of the two explanations suggests that because the larvae are n...

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...endritic cell for only a few minutes. This initial phase lasts about eight hours. Then the T cells pick one antigen-presenting dendritic cell and sticks to it for many hours. After one day, the T cells disengage from the dendritic cell and begin to rapidly reproduce. About three days later, they depart fr...

Cancer virus protein needed for successful infection

...lays an essential biological role during the early phase of virus infection in an animal model," Lairmore says. Next, the researchers will study the function of p13 in HTLV-1 infection, and how it affects mitochondria. ...

Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions

...eriphery to the brain. Suppressed the long latency phase of the brain's neuronal response to whisker-related sensory stimuli. Suppression of the sensory neuronal response in this way is believed to help filter extraneous stimuli, Waterhouse explained. With the extraneous stimuli out of the way, the individ...

Radioactive scorpion venom for fighting cancer

...with brain gliomas. A recent study of the earlier phase II trials showed that patients receiving up to 40 ...attributable to the radiation. The second-sequence phase II trial at Henry Ford involves 3 patients, with a total of 54 patients across the US currently in i...

Study finds how organs monitor themselves during early development

...ct. The researchers looked at a larval development phase during which the ovary grows remarkably fast. In three days the number of primordial germ cells rises from twelve cells to 100 cells. The scientists started by looking at larvae with defects that cause them to have too few germ cells. The animal ...

Device effective in zapping the pain out of migraines

...ion. The device, called TMS, interrupts the aura phase of the migraine, often described as electrical storms in the brain, before they lead to headaches. Auras are neural disturbances that signal the onset of migraine headaches. People who suffer from migraine headaches often describe "seeing" showers of...

Matrilin-3 gene discovered to prevent onset of osteoarthritis

... developed premature and extended hypertrophy ?the phase when cells increase in size to form bone. Later in life, those mice had higher bone mineral density (BMD) and higher rates of osteoarthritis. In people, BMD is a hallmark of certain forms of osteoarthritis. Compared with mice whose genes had not be...

Virtual realities against pain

...n begin to move forward beyond its current initial phase by placing more emphasis on methodology and psychological aspects. ...

Heart has enough oxygen to survive hypothermia, CPR crucial

... efforts aimed at elevating cardiac output in this phase seem advisable in order to optimize oxygen supply, reperfuse (restore blood flow to) vascular beds (minute blood vessels) and prevent rewarming shock formation," the authors wrote Source and funding "Is oxygen supply a limiting factor for survi...

Novel therapy combinations gain ground in treating hepatitis

...g promise in suppressing the virus, according to a phase II US multi-center study. The therapy, valopicitabine, has shown anti-HCV activity alone and in combination with pegIFN (pegylated interferon) in early trials, without viral breakthrough for study periods up to six months. The current study compare...

Completed genome set to transform the cow

..., says the new map marks the end of the sequencing phase of the project, with the focus now on analysing the available data. "This is very valuable information," Dr Tellam says. "We could potentially achieve as much improvement in cattle breeding and production in 50 years as we have over the last 8000 y...

Defense peptide found in primates may block some human HIV transmissions

...velop resistance at a much slower pace. The next phase of Cole's research will delve more into the mutations that HIV-1 can take in an effort to minimize them as much as possible. Many series of laboratory tests would need to be completed before clinical trials could begin no earlier than 2009. Cole's...

New study reveals signaling pathways required for expansion of pancreas stem cells

...placement of insulin-producing cells occurs in the phase of diabetes when these cells are being actively eliminated," says Alberto Hayek, a professor of pediatrics at the University of California, San Diego and scientific director of the Whittier Institute for Diabetes. "The replacement may occur at the ex...

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