Tag: "weeks" at biology news

New study: Preterm birth causes one-third of all infant deaths

...002 preterm birth, birth at less than 37 completed weeks gestation, contributed to more than one-third of i...aths were of infants who were born at less than 32 weeks gestation, the definition of infants who are "very preterm." Birth defects are the leading cause of...

Encouraging results in pancreatic cancer research

...ring the two-week period of administration and two weeks post-treatment, followed by weak tumor growth that leveled off at low tumor sizes. In addition, according to Josef Michl, MD, associate professor of pathology at SUNY Downstate, "When administered from a site distant from the tumor, PNC-28 still ca...

Underweight women at greater risk of miscarriage

...ended in first trimester miscarriage (less than 13 weeks gestation) and 6,116 women whose most recent pregn...fered from nausea and sickness in the first twelve weeks of pregnancy were almost 70% less likely to miscarry, and the more severe the sickness, the better t...

New way of tracking muscle damage from radiation

...d the muscles of 13 patients before, during and 12 weeks after they received radiation therapy for soft tissue sarcoma. The team used a technique called quantitative T2 to determine the extent of swelling in tissues before, during and after radiation therapy; and a technique called dynamic enhanced magneti...

Smashing the time it takes to repair our bones

...ng, healthy people took approximately six to eight weeks to heal. "It might be possible to significantly reduce the healing time. That would be the goal." Dr Hannay graduated from QUT with a PhD from the Faculty of Built Environment and Engineering....

'Protecting virus' offers instant flu protection and converts flu infections into their own vaccines

...enerated by conventional flu vaccination takes 2-3 weeks to become fully effective. Experiments so far sho...t a single dose of protecting virus can be given 6 weeks before an infection with flu virus and be effective. This could also have a substantial advantage o...

Anticipation plays a powerful role in human memory, brain study finds

...er more of them right away," says Nitschke. Two weeks after the experiment, scientists met with the stud...s activity during the picture-viewing exercise two weeks before. That suggested that those subjects' brains had already started converting short-term memorie...

Transplanted brain cells hold promise for Parkinson's disease

...ave begun studies that delay the transplants until weeks after injury. For this study, researchers compared animals that received placebo treatment with those that received only protective neurotrophic factors secreted by stem cells and those that had a transplant. Animals that received transplants e...

Newts which regrow their hearts

... to build up new heart muscle. It takes around two weeks for the heart function to be restored in the newt. The data shows that at this point the expression of the muscle-specific proteins is again normal, i.e. the cells have differentiated again, and have regained their characteristic properties. The r...

Scientists discover way to block growth of prostate cancer cells

...0% of mice treated with MDL survived ten to twelve weeks longer than the untreated control group. "To the best of our knowledge, this is the first report of a specific enzyme inhibitor MDL that blocks androgen-induced oxidative stress in the prostate and prevents spontaneous prostate tumour development,...

Early HIV treatment fails to restore memory T cells

Most of the body’s memory T cells vanish within weeks after a person is infected with the HIV virus. In a study from the Aaron Diamond AIDS Research Center and the Bernard-Nocht Institute appearing in the international open-access journal PLoS Medicine, researchers report that these memory T cells, most...

HIV-1 kills immune cells in the gut that may never bounce back

... Prior research had shown that, just two to four weeks after contracting HIV-1, the lymphoid tissue layer in the mucous membrane of a patient's gastrointestinal (GI) tract can lose up to 60 percent of its CD4 memory T cells -- immune cells responsible for recognizing invaders and priming other cells for ...

Vaccination with embryonic stem cells prevents lung cancer in mice

...lted in 60% of mice remaining tumour free after 27 weeks and ESC + STO/GM-CSF resulted in 90% remaining tumour free. Importantly, tumours arising in vaccinated mice were, on average, about 80-90% smaller than tumours in unvaccinated mice. All the unvaccinated mice developed tumours. None of the vaccinat...

Proteins necessary for brain development found to be critical for long-term memory

...to exhibit heightened withdrawal reflexes days and weeks after the shocks are over. When the animals are shocked, a brain chemical known as serotonin is released that promotes the formation of a long-term memory associated with the shocks. However, when Carew and his colleagues blocked the interaction be...

Studies look at how genes affect antipsychotic drug response

...zophrenia who are treated with risperidone for six weeks as part of UIC's First Episode Program. "Allowing patients with schizophrenia an increased chance at medication response literally could change their lives," Bishop said. "While we know a great deal about the pharmacology of antipsychotics like r...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

... in 10 of those treated see symptoms return within weeks or months after surgery fails to keep open the nasal passages, scientists say. The Hopkins report, published in the July issue of the American Journal of Rhinology, is believed to be the first to identify the enzyme's presence in the nose and con...

Train your brain to hear your friends at a party

...rrets to perform the same task twice a day for two weeks and made a startling discovery. At first, the ferr...g had been disrupted by the earplug) but after two weeks they regained their ability and by the end of the period were as good at detecting the location of t...

Stroke symptoms common among general population

...physical examinations were conducted three to four weeks later. A stroke risk score was calculated for each individual based on demographics, behaviors and other risk factors, with higher scores indicating a greater risk for stroke. A total of 3,292 (17.8 percent) of the participants reported having ha...

Artificial cornea offers better results for infants, some blind patients

...be very effective in infants and children from six weeks to 13 years old, restoring vision and putting an e...t. The youngest child to receive the implant was 5 weeks old. Along with his work in children, Aquavella has implanted the device in more than 100 adults ...

Some butterflies travel farther, reproduce faster

... A lot. The butterflies live between two and three weeks after emerging from the pupa, so they have to produce eggs quickly. In the fragile world of a butterfly, a day can make all the difference between reproducing and not. The physiological difference The researchers delved into what was behind the...

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