Tag: "then" at biology news
Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says
...nd after their pregnancy. Later on, the women were then
asked to report on their childs sleep habits at 6, 18 and 30 months, detailing how long the child slept (a consolidated daytime and nighttime total), how often the child awoke, and if he or she exhibited any of seven common forms of sleep problems, s...
St. Jude study solves mystery of mammalian ears
...very basic questions about how the body works, and then
use those answers to solve medical problems in the...d-shaped body of the outer hair cell contracts and then
vibrates in response to the sound waves, amplifying the sound. In a previous study, Zuo and his coll...
Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily
...for maintaining immunity. Another protein — gp41 — then
enables HIV to penetrate a T-cell membrane. Fusion takes place specifically through a short stretch of gp41 called fusion peptide 23, or FP-23 for short. Prior studies have shown that FP-23 fuses with, and can even break apart, blood cells and other ...
Genomic Analysis Uncovers New Targets for HIV Vaccine
..., known as the viral load, gradually decreases and then
levels off, a period during which patients do not exhibit symptoms of their disease. The viral load during this leveling out is an indication of how well the patients' own immune system is battling the virus, and this is the point in the infection's ...
Common cancer gene sends death order to tiny killer
...ing p53 and the other containing healthy p53. They then
looked for any of the 500 known human microRNAs that are activated only in cells containing p53. It turned out that the miR-34a gene is turned on by p53, and in fact, experiments demonstrated that p53 binds directly to the genetic material near mi...
Research identifies protein that signals flowering in squash plants
...e leaves of a plant under inducing conditions, and then
is transported through the phloem to the floral me...nly when grown under SD conditions. The authors then
used the potyvirus Zucchini yellow mosaic virus (ZYMV) as a delivery vector to test whether long-dis...
Cells re-energize to come back from the brink of death
...r agents that triggered apoptosis. The researchers then
blocked apoptosis in order to study CICD. “The GAPDH response appears to represent a basic, reproducible event. But in order to verify that hypothesis, we’ll need to study it in the body, especially as we try to develop ways to force cancer cells wit...
Brain inflammation may be friend, not foe, for Alzheimer's patients
...a in select brain regions of its engineered mouse, then
applied the technology in mice specially designed ... scientists can boost IL-1beta in select areas and then
watch what happens as the process unfolds. The team expected to see the telltale clumps of materi...
Blood test may help signal tumor's remission, return in throat cancer patients
...tter markers for detecting cancer as it begins and then
monitoring the course of treatment is a major goal of the NCI and this research in head and neck cancer is an excellent example of the type of collaborative study between two NIH institutes that helps advance the field,” said NCI Director, John E. Ni...
Releasing fish for the future
...ys to boost the survival rates of fish caught and then
released by anglers. Some guidelines designed to ... the released line-cut, gut-hooked yellowfin bream then
shed their hooks over an average of three weeks”, he said. ...
Liver cancer patients with high serum levels of hepatitis B virus face poorer outcomes
...ver function and clinical signs and symptoms. They then
performed statistical analysis to assess which factors might have influenced patient outcomes. The median survival of all patients was 6.83 months. Patients with high pre-treatment HBV DNA had a significantly higher incidence of developing severe ...
Math that powers spam filters used to understand how brain learns to move our muscles
...dict” or “believe” that something new will happen, then
uses that information to help make it so. “We used the idea that prior experience and belief affect the probability of future outcomes, such as taking an alternate route to work on Friday because you’ve experienced heavy traffic Tuesday, Wednesday...
Gene therapy delivery of nerve growth factors reverses erectile dysfunction in animal model
...ically engineered herpes simplex virus (HSV). They then
injected either of the recombinant viruses into the damaged cavernous nerve of rats. GDNF is an important nerve growth promoter and has been shown in other studies to contribute to survival and regeneration of penile nerves. Neurturin also is a nerve...
The insect vector always bites twice
...uninfected, vectors or non-vectors, were separated then
put into contact with the serum of individual subjects, infected or uninfected, exposed to bites. Comparison of salivary protein immunogenic profiles obtained showed that they differ depending on the infection status of the subjects (exposed uninfect...
Bigger horns equal better genes
... "[The horns] require a lot of energy to build and then
carry around. They can be a meter long and are quite heavy, and the ibex carries them for their lifetime, unlike antlers which are shed every year. They also cause the ibex to lose heat in winter, because their core is heavily vascularized." Foun...
Largest synthetic gene ever built offers insights into anti-malarial drug resistance
...They have been able to artificially construct, and then
express in yeast, a protozoan gene that contribute...otein sequence from the NIH PubMed data base. They then
"back translated" the protein sequence using a computer program to change the parasite gene sequence...
Pesticides choke pathway for nature to produce nitrogen for crops
...ased application of synthetic nitrogen fertilizer, then
crop yields are reduced and/or more growing time is needed for these crops to reach the yields obtained by untreated crops. We feel that this is a previously unforeseen factor contributing to declining crop yields." The researchers say that field-...
Caribbean frogs started with a single, ancient voyage on a raft from South America
... DNA-sequence mutations separating two species and then
dividing that number by the rate of change, which is established with the help of fossils and geologic information," explained Hedges. The study's DNA research revealed that, while many ocean dispersals may have occurred over time, only two led to...
In mice, drug protects against diabetes and atherosclerosis
...rform more detailed toxicity tests in animals, and then
move toward human testing. The important lesson from the new study, the researchers wrote in their report, is the demonstration that aP2 can be blocked by a small-molecule, oral compound. In turn, they add, the results suggest that targeting aP2 "...
Brightening prospects of using fluorescent nanotubes in medical applications
...er from the centrifuge, let it set for a while and then
put it back in the ultracentrifuge for another 12 ...ing the gold clusters to the surface of tumors and then
exposing them to wavelengths of light that cause them to grow hot enough to destroy nearby cells. Th...
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