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Tag: "changes" at biology news

Researchers discover surprising drug that blocks malaria

...gainst malaria attack the parasite, but it rapidly changes its molecular structure to become resistant to those drugs. It would be difficult, however, for the malaria parasite to develop resistance to a drug that acts on a person's red blood cells as the blood pressure medication does, Haldar said. When H...

Rewarding fat rats

... the thing that leads to a "reward," such as food, changes happen in the body and the brain. Describing and understanding those changes has been the focus of Natural Sciences and Engineering Research Council (NSERC) grantee Peter Shizga...

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

...HIV-1. Moreover, they showed that a few amino acid changes in the fragment enhanced its antiretroviral potency by two orders of magnitude. VIRIP and its derivatives remained effective against drug-resistant HIV strains, making them "highly promising for further clinical development," according to the researc...

Scientists unlock secret of what makes plants flower

...which the Arabidopsis plant flowers in response to changes in day length. Earlier research had shown that plants' leaves perceived seasonal changes in day length, which triggers a long-distance signal to travel through the plant's vascular system f...

Flavanols in cocoa may offer benefits to the brain

...the consumption of this cocoa resulted in regional changes in blood flow in study participants, suggesting that cocoa flavanols may have therapeutic potential for the treatment of vascular impairments within the brain itself. “Our study showed that acute consumption of this particular flavanol-rich coco...

Computer imaging assists with facial reconstructive surgery

...al convexity angle increased after surgery. These changes brought the patients closer to the normal range for these measurements and angles. “Surgery for facial disharmony requires artistic judgment and objective evaluation,?the authors conclude. “For surgeons who use computer imaging software, analysis...

Gene chips forecast ecological impacts of climate change

...ion, marine ecosystems will experience temperature changes combined with changes in ocean pH –?ocean acidification. As a consequence of the elevated levels of the greenhouse ga...

Parasite infection may benefit MS patients

...ts showed minimal Expanded Disability Status Score changes (EDSS is used to measure disability due to MS) tha... less than three months, while the other 10 had no changes in EDSS scores. In the uninfected group, 11 patients showed an overall increase in EDSS. Since MS in...

Active ingredient in common Chinese herb shown to reduce hypertension

...art attacks, strokes, or kidney disease. Lifestyle changes are the first-stage treatment for the disease, but...ion of nitric oxide and (4) induced blood pressure changes through vasodilation in hamster blood microvessels. While the mechanisms of how tanshinone IIA or d...

Brain networks strengthened by closing ion channels

...nitive deficits of normal aging, and for cognitive changes in schizophrenia, bipolar disorder, or attention d...able, and some patients with ADHD may have genetic changes in molecules that weaken the production of norepinephrine. Treatments for ADHD all enhance stimulati...

New test for most virulent HPV strains under study

...f getting moderate to severe precancerous cervical changes or cancer is much higher than if you have one of t...ad a 15 percent risk of cancerous or pre-cancerous changes after 10 years, those with type 16 had a 20 percent increased risk while those with the 11 other str...

Mosquito genes explain response to climate change

... photoperiodic response and dormancy. "Climate changes already are extending the growing seasons," Holzapfel said. "We know that portions of the country are becoming warmer and dryer than others. Plants and animals are not confronting this stress directly, but rather they are flowering, reproducing and ...

Living with water scarcity -- world must act now

... better water management along with non-miraculous changes in policy and production techniques" says Margaret Catley Carleson, Chair of the Global Water Partnership, "but world leaders must take action now." As Sunita Narain, 2005 Stockholm Water Prize Winner says, "this issue must become the world’s obsess...

Why is the heart heart-shaped?

...ay be sculpted by cell movement, cell division, or changes in cell size and shape, all of which can be influenced by the local environment. The heart appears as a simple tube early in development; later, the tube walls bulge outward to form the cardiac chambers. In a new study published online in the open...

The connector rotation hypothesis? Phage do not pack their DNA by rotation

...sis of the fluorescence pattern confirmed that the changes in the fluorescence emitted by the molecules as packaging took place did not correspond to any sort of continuous rotational motion. The researchers concluded with more than 99% certainty that the packaging mechanism does not involve rotation. Ho...

Speeding 'fingertip' discovery -- 20 years of protein info in 1 place

...makeup of proteins to identify nearly all chemical changes nature makes by adding phosphate to proteins manuf...esearch was to identify accurately as many protein changes as possible using the new technology. “But to see how well we measured up, we had to compare our fin...

Neural bottleneck found that thwarts multi-tasking

...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 generally provides limited information about how that area responds over time. To over...

Inhibiting blood to save the brain

...ch as loss of balance and muscle coordination, and changes in cognitive function. The disease is marked by loss of myelin, a material that coats nerve fibers. Past studies showed that the destruction of the myelin sheath is associated with the accumulation of fibrinogen deposits in the brain of human MS pat...

Making mice with enhanced color vision

...absorbs a range of wavelengths, but the efficiency changes with wavelength," Nathans explains. "For example, one photoreceptor might absorb green light only half as efficiently as red light. If an animal had only this type of photoreceptor, then a green light that was twice as bright as a red light would lo...

Stretching DNA to the limit

...Duke University have developed a method to measure changes in the mechanical properties of DNA upon irradiati... measurements enable the accurate determination of changes in the elasticity of the DNA strands. Upon exposure to UV light, the force profile of the viral DNA ...

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Breaking Biology News(10 mins):NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
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