Tag: "arms" at biology news

Bodys own antibodies may drive new strains of HIV

...r a vaccine to work, it will need to activate both arms of the immune system: antibodies, which are key in thwarting the initial infection; and killer white blood cells, which provide longer-term protection. In recent years, AIDS scientists have made progress on the cellular front; several vaccines using ...

Aspirin prevents polyps in colon cancer patients

... death were also similar between the two arms of the study. The study was halted when an independent data and safety monitoring board found the statistics about the benefits of aspirin so compelling, it felt that patients in the pla...

24-Wk data from CONTEXT trial comparing GW433908/ritonavir QD & BID to Lopinavir/ritonavir BID

... failure. The medications in all three treatment arms were administered as part of combination therapy that included two reverse transcriptase inhibitors (RTIs). In this study, 908 was administered without food or fluid restrictions. 908 is the calcium phosphate ester pro-drug of amprenavir (APV) and wa...

How the nose knows a rose-or a mate

.... "Think of the glial cells as a person with their arms wrapped around the axons," Greer said. "We've taken these glial cells, and have begun to make spinal cord cells functionally enervate areas." During the AAAS Annual Meeting, a panel on olfactory research also will explore the question of "olfactory m...

Insect antibiotics Resistance is futile!

... for new therapeutic agents. "We're engaged in an arms race against infectious bacteria. With each new antibiotic, bacteria have found a way to evolve resistance primarily by slightly altering cellular enzymes," said Axelsen. "Bacteria may be unable to alter their genetic machinery, and this may explain...

Topical oxygen helps hard-to-heal wounds heal faster and better

... the best healing rates: such wounds on the trunk, arms and hands had a 75 percent and 100 percent healing rate, respectively. Half of all acute wounds on the legs and feet healed. Chronic wounds that responded well to the oxygen therapy ...

For spinal cord injury patients, new insights for rehabilitation therapy

...rchers measured resting blood flow in the legs and arms and blood pressure in patients with SCI and compar...nd vascular resistance was profoundly lower in the arms than in the legs. To distinguish between the effect of loss of central neural control versus decondi...

Evolving slower gets you the bigger piece of the pie

A well known effect in the arms race that ensues between host and parasite, the red queen effect, states that the species that is able to evolve countermeasures faster than its partner will gain the upper hand. New research claims that this is not so when considering mutualistic in...

UW researchers discover gene mutation associated with a form of Charcot-Marie-Tooth disease

...rized by nerve degeneration in the hands and lower arms and in the feet and lower legs. The nerve damage leads to muscle weakness and loss of sensation in these parts of the body. Affecting about 1 in 2,000 people, Charcot-Marie-Tooth disorders are the most common inherited neurological diseases. Differen...

Exercise and recreation for people with mobility impairments

...that measured applied hand force and torque. Their arms were prepared with markers for tracking arm movement. Participants propelled on a roller system at two constant speeds while data were collected. The shoulders moved through a greater range of motion, and loads were calculated that were nearly two ti...

Clinical trial shows timing of chemotherapy improves survival in breast cancer

...o- or three-week cycles. Patients in the other two arms of the trial were randomized to receive concurrent AC followed by T, also in two- or three-week cycles. Because frequent administration of chemotherapy can result in a condition called neutropenia--the decline in the number of certain white blood cel...

Researchers reach milestone in fight against lymphatic filariasis

... disease manifestations such as extremely enlarged arms and legs, and genital disfigurement. Combined with conclusions drawn from mathematical analysis of the interrelationships between the potentials of mosquito transmission and human infection, the report clearly sets the precedent that annual mass tre...

Multitasking genes manage related traits in plants

...ic coordination, for instance, is the reason human arms don't grow out of concert with legs and send people's knuckles dragging to the ground. "It keeps the parts in the right proportion, so they can do a job," he said. Understanding that a single gene affects more than one part can help reveal why plant...

Neanderthals used both hands to kill

... suggests theythrew spears, rather than using both arms to thrust them. But Steven Churchill at Duke University in Chapel Hill, North Carolina,thinks this reasoning is flawed. A two-handed spear thrust will put far morestress on the dominant arm holding the back end of the spear than the frontarm, he says...

Clock cues: Cellular sensing, metabolism research wins Amersham Biosciences and Science Prize

...oteins that fight against silencing, uncovering an arms race between viral and host DNA. EUROPE/Sisters Stick Together: The critical process of cell division requires that replicating and dividing chromosomes pair up correctly before finding their way into new cells. Sister chromatids-the two strands that...

Study shows first direct evidence that transplanted muscle cells can take root in damaged hearts

... it could not examine the hearts directly. In both arms of the study, a sample of cells was removed from the quadriceps muscle, and treated with enzymes to isolate the satellite cells. They were then grown in a laboratory under carefully controlled conditions, to give the original handful of cells time to...

Butterfly restrains Darwin

...raits are linked to each other. A person with long arms always has long legs. The evolutionary biologists from Leiden wanted to investigate, in the laboratory, whether they could rear butterflies with all possible combinations of characteristics or whether certain combinations were not possible. They used...

Your brain is teaching your nose new tricks, say UC Berkeley researchers

... limbs to force patients to try use their affected arms or legs has resulted in recovery of some use of those limbs. The researchers conducted their work through a very simple mechanism using the chemical androstenone. Androstenone cannot be detected by approximately 30 percent of the population. Howev...

Study provides direct evidence of the role of telomeres in prostate cancer development

...lized structures located at the end of chromosomal arms that stabilize and protect chromosomes. In addition, they play a role in preventing cells from reproducing uncontrollably. "Our study found that short telomeres may represent useful markers for assessing effectiveness in cancer chemoprevention stud...

Study finds link between common neurological disorder and Alzheimer's disease

...cell to another. Neurons are characterized by long arms called processes that extend away from the cell body, and under normal circumstances proteins move along a system of microtubules to reach all parts of the neuron. Problems with the internal transport of proteins can lead to neuronal malfunction and ...

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