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Tag: "plasma" at biology news

A cherry on top: Tart cherries may alter heart/diabetes factors

...t from cherries. The researchers also measured plasma TEAC, a measure of antioxidant capacity in the blood on which a higher reading means better ability to neutralize damaging free radical molecules produced in the body during metabolism. The rats that received cherries had higher antioxidant capacity,...

Link found between immune system and high plasma lipid levels

...nsuspected link between the immune system and high plasma lipid levels (cholesterol and triglycerides in the... less hepatic lipase ?and consequently, had higher plasma lipid levels. The authors write: "Our data may help to explain the long time dogma that chronic ...

Biologists prove critical step in membrane fusion

...nds of membrane-bound vesicles are attached to the plasma membrane. Within seconds after fertilization, the contents of these vesicles are rapidly released. Previous research has shown that special proteins kept these vesicles tethered to the egg’s membrane. What about the membranes? What do they look like ...

Twin studies reveal genetic components leading to cardiac and kidney disease

...ased in reaction to stress. The study measured the plasma concentration of ET-1 in about 300 twins. The results establish and verify a previously unsuspected link between catecholamines and the endothelial system, showing that this link is due to a genetic variation and therefore runs in families. Hered...

Einstein's tea leaves inspire new blood separation technique

...ocess for rapidly and efficiently separating blood plasma at the microscopic level without any moving parts,...ofluidics (http://bmf.aip.org). Separating blood plasma from red blood cells, proteins and other microscopic particles is an essential step in many common m...

Discovery of an HIV inhibitor in human blood points to new drug class

...es of the peptide are highly stable in human blood plasma and are nontoxic even at exceedingly high concentrations. According to the latest World Health Organization estimates, nearly 40 million people worldwide are living with HIV/AIDS, including more than 2 million children. Close to 4 million people b...

Organic is healthier: Kiwis prove that green is good

...ts show a significant reduction in the increase in plasma lipids caused by cholesterol feeding. "This is potentially beneficial to health with regards to heart disease", he added. Casey Gauthier reports on this story in Chemistry & Industry. ### Please acknowledge Chemistry & Industry and ...

'Super' enzyme may lead way to better tumor vaccines

...yme so that it targeted a particular domain on the plasma membrane of the cell where signaling occurred, making the action of Akt1 more specific. They then eliminated a small part of the Akt1 molecule that had a negative or inhibitory effect. "It turned out that the altered molecule was much more potent,"...

New study finds chocolate chip cookies lower cholesterol

... percent decrease of LDL cholesterol levels in the plasma of the participants of the Right Direction Cookie ... total number of lipoprotein particles and reduced plasma concentrations," said Jay Udani, a key researcher of the study and Medical Director of Medicus Resea...

UCSD researchers create roadmap to integrin activation

...mation between the inside and outside of a cell at plasma membrane sites. Platelets stop the body's bleeding by sticking to one another. When a patient experiences a heart attack or stroke, the platelets stick inappropriately, clumping together and blocking the blood vessel. A signal from inside the pl...

Too mellow for our predatory world

...centration of corticosteroid hormones in the blood plasma increased within just a few minutes. There were significant differences in the various island populations examined by the scientists: marine iguanas with no experience of predator-pressure tolerated a human approach up to one or two metres and fail...

Walking not enough for significant exercise benefits

... Other markers of overall health, such as fasting plasma glucose levels, response to a two-hour glucose tolerance test and various blood lipids were unaffected by either exercise program. "Our concern is that people might think what matters most is the total number of daily steps accumulated, and not pay ...

New biologic treatment for tennis elbow may replace surgery for chronic sufferers

...nts received a one-time injection of platelet-rich plasma (PRP) into their affected elbow. (Platelets are b... injury, but also contain powerful growth factors; plasma is the liquid portion of the blood.) Blood was drawn from a patient's unaffected arm and spun down ...

Study of gene transfer for erectile dysfunction shows promise

...erectile function. The DNA segments ?mixed into plasma ?were injected into the corpus cavernosum, expandable tissue along the length of the penis that fills with blood during erection. A variety of clinical and laboratory tests were used to assess safety. In addition, effectiveness was measured using the...

New study reveals structure of E. coli multidrug transporter protein

...space-the space between the outer membrane and the plasma membrane in gram-negative bacteria like E. coli. "While EmrD and EmrE are completely different proteins from different molecular families," Chang said, "both are multidrug transporters that help bacteria develop multidrug resistance. Together with M...

Nanotechnology being used to improve biocompatibility of human prosthetics and implants

...haracterized. The splats were deposited using both plasma spraying and high velocity oxy-fuel (HVOF) onto polished Ti-6Al-4V substrates. The results showed that the nanostructured HA splats are capable of enhancing the attachment and proliferation of the osteoblast cells. The study also revealed that the ...

A single sugar found responsible for an antibody's ability to treat inflammation

... complex mixture of IgG antibodies made from human plasma that contains the pooled antibodies from thousands...toimmune disorders. In the body, the antibodies in plasma act as part of the immune response to identify and deactivate foreign invaders. When they begin atta...

Natural vitamin E tocotrienol reaches blood at protective levels

... tocotrienol reached concentrations in human blood plasma that would be more than adequate to protect against neurological damage that follows stroke. These findings were published in the May issue of the journal Antioxidants & Redox Signaling. In a separate study, the scientists determined that TCT ...

Researchers discover which organs in Antarctic fish produce antifreeze

...ebrate liver is well known as a source of secreted plasma protein, so there was no reason to think otherwise," said Chi-Hing "Christina" C. Cheng, a professor of animal biology. "It turns out that the liver has no role in the freezing avoidance in these fishes at all." Instead, antifreeze glycoproteins (AF...

Study links high levels of nitric oxide to infertility and sperm DNA damage

...gher concentrations of nitric oxide in the seminal plasma of infertile patients than in healthy men. High co...m DNA damage and NO concentration in their seminal plasma compared to fertile men, and that the sperm DNA damage may be caused by the NO." Dr Amiri said the ...

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