New light shed on marine luminescence
... make the sphincters contract or relax show that when the sphincters relax, the krill begins to luminesce, presumably because of the increased flow of oxygenated
blood to the photocytes.
As bioluminescence has developed independently at several different points in evolution, different species have ...
Researcher seeks to turn stem cells into blood vessels
... in the lab," Gerecht said, "because some research indicates that a lack of oxygen causes stem cells to form blood vessels in order to deliver more oxygenated
blood to affected areas of the body. We are using our engineering approach to find out if this is actually what happens."
The research is ...
TGen Clinical Research Services at Scottsdale Healthcare and Mayo Clinic study new cancer drug
... form of the drug, the more resistant hypoxic cells are exposed to high concentrations of released cytotoxic agent, which can also diffuse into the oxygenated
regions of a tumor cell.
The Phase 1/2 trials are investigating the safety and activity of TH-302 in combination with a number of conventional ...
Breakthrough optical technology to assess colon cancer risk, accuracy
... is where all polyps and cancer start -- and the accuracy with which these things can be measured."
Researchers used the optic probe to measure oxygenated
(Ohb) and deoxygenated (Dhb) hemoglobin (Hb) specifically in the colonic lining where small blood vessels circulate. At NorthShore's Evanston ...
Certain anticancer agents could be harmful to patients with heart disease
... the hedgehog pathway to modulate its signal and increase and decrease blood vessels on demand, providing a mechanism to ensure a constant supply of oxygenated
blood for the energy-hungry cells of heart muscle."
The researchers say that the role of hedgehog signaling in the vasculature of the heart means ...
... as this room offers a unique environment for DC-magnetoencephalography, which is a measure of neuronal activity. The concentration changes of oxygenated
and deoxygenated hemoglobin are assessed optically using another advanced technique, time resolved near infrared spectroscopy, which is compatible ...
Healthy rivers needed to remove nitrogen
... the nitrogen.
Oregon had even lower levels of denitrification than the national average. Johnson said the combination of high-gradient streams, oxygenated
water and porous stream beds is not conducive to the denitrification process.
A lot of streams in Oregon have subsurface water flowing beneath the ...
Study reveals a key to blood vessel growth and possible drug target
... or the growth of blood vessels, is active not only during embryonic development but throughout the life of the body, providing a source of oxygenated
blood to tissues damaged by wounds.
However, it is also active in a number of disease processes, including cancer. Without a blood supply, tumors ...
New CPR promises better results by compressing abdomen, not Chest
... perfusion," or pumping blood through the heart muscle, which is critical for successful resuscitation because the heart muscle is nourished by oxygenated
blood, Geddes said.
"Unfortunately, in standard chest-compression CPR, blood sometimes flows in the wrong direction, which means the coronary ...
Hearts of male and female rainbow trout are different
... epicardium, much like the human heart, receives oxygenated
blood via the coronary circulation. Conversely, ... incubated in a respiration cell containing an oxygenated
buffer solution with glucose as the energy ... disease and cancer), or (c) glucose + NaCN under oxygenated
and hypoxic conditions.
The researchers ...
... blood and the gases, O2 and CO2. The respirator syringes introduce the oxygenated
perfluorocarbon to the very last alveola. Here oxygen is released and ... part of the perfluorocarbon from the lungs and introduces the next oxygenated
dose. The same machine carries out the removal of CO2 from the ...
Amphibians in losing race with environmental change
... against them, scientists say. Examples include:
Many amphibians lay their eggs in shallow, open water in direct sunlight to provide a more oxygenated
environment, increase growth rate of larvae and reduce predation. But the increased levels of UV-B radiation in today's sunlight, due to erosion of ...
Neural bottleneck found that thwarts multi-tasking
... magnetic resonance imaging, or fMRI, an imaging technology that reveals the brain areas active in a given mental task by registering changes in oxygenated
blood concentration in these regions. While fMRI is an excellent tool for identifying a particular area in the brain involved in a given task, it ...
Virus may control Australia's
... over the waterways. They can tolerate a wide range of water temperatures, salinity and pH levels. Carp can also survive and breed in polluted, poorly oxygenated
"The fish grow to up to 20 kilograms or more in weight and each female can lay up to three million eggs in a single season," Dr Crane says. ...
Finding an answer to Darwin's Dilemma
... the oxygen levels in the world’s oceans at the time these sediments accumulated in Avalon.
The close connection between the first appearance of oxygenated
conditions in the world’s oceans and the first appearance of large animal fossils confirms the importance of oxygen as a trigger for the early ...
Common carp sheds new light on surviving in extreme environments
... in the heart and muscle cells of humans and vertebrate animals - also exists in many other tissues of the common carp, enabling it to survive in low oxygenated
Myglobin is found in large quantities in diving mammals such as whales and seals and helps them remain submerged for long periods ...
Cincinnati surgeons report new treatment for often-fatal injury
... who suffer this injury--known as blunt thoracic aortic trauma--die before ever reaching a hospital.
The aorta is the main artery that carries oxygenated
blood from the heart to be distributed throughout the body.
A severe blunt thoracic accident, usually a non-penetrating "deceleration" injury, can ...
Feds give researchers ok for safety test of adult stem cells in patients with heart disease
... will grow (neovasculogenesis). The hope is the new blood vessels will replace or supplement those blood vessels that fail to adequately supply oxygenated
blood to heart tissue. The method was developed by Mary Laughlin, M.D., a hematologist, and Vincent Pompili, M.D., a cardiologist, both of Case, UHC ...
Brain activity related to processing faces is similar in people with, without autism
... dependent signals. The signals can be localized in the brain and translated into digital images that portray neural activity level as a ratio of oxygenated
to de-oxygenated hemoglobin, the iron-containing pigment in red blood cells. Researchers then can quantify these signals to generate maps of various ...