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Tag: "connect" at biology news

Threats to wild tigers growing

...ctory. The scheme features wildlife corridors that connect 12 reserves. Tiger conservation efforts have also been successful in the Russian Far East. Many tiger reserves in the India, in contrast, have been mismanaged and have failed to protect the animals, according to the article. Plans to make use of t...

How brain pacemakers erase diseased messages

...n -- in which nerves project in all directions and connect with one another to form multiple, looping networks -- makes studying how deep brain stimulation works a challenge, Grill said. Grill's team created a mathematical model of a normally functioning brain cell. The researchers then gave the model neu...

'Insulator' helps silence genes in dormant herpes virus

...are the nucleotides on each side of the rungs that connect the strands of the DNA ladder. "By establishing an insulator in early latency, the Herpes virus can protect this one small region of the genome from silencing, allowing infected cells to survive," says study senior author Jumin Zhou, Ph.D., an ass...

Scientists identify prion's infectious secret

...05, identified the amino acid regions where prions connect with one another to form amyloids. Those interaction regions turn out to be the same regions Tessier identified as recognition elements?further confirmation that these regions are key to prion activity. Tessier and his colleagues plan to further...

World's leading scientists announce creation of 'Encyclopedia of Life'

... be made available in all major languages and will connect scientific communities concerned with ants to apples to zebras. As part of its work, the Encyclopedia of Life will collaborate and partner with a wide range of organizations, individuals, and experts to help strengthen the Encyclopedia and its impac...

In Iran, cheetahs collared for the first time

...e first steps in establishing a plan to secure and connect the few remaining populations of this incredible animal." Once ranging from the Red Sea to India, the Asiatic cheetah today is hanging on by only the thinnest of threads. In the 1970s, estimates of the number of cheetahs in Iran ranged from 100 to...

Deconstructing brain wiring, one neuron at a time

...type of neuron, to see which other cell types they connect with and how those connections are configured. To do this, they need a tracer that can tease apart the chain of directly connecting neurons, identifying them one by one. Viruses that naturally spread between neurons have previously been used to ou...

NIDA study identifies genes that might help some people abstain from smoking

...ll adhesion, which governs how cells recognize and connect to their neighbors) and a cyclic G-dependent protein kinase gene, which plays a key role in normal brain development. In addition to genes implicated in intracellular signaling and intercellular interactions, a number of genes involved in other proce...

Shedding new light on proteorhodopsin

.... If a capacitor is already fully charged and you connect a battery to it nothing happens. However, if you drain the capacitor and then connect a battery, a current will flow." To observe proteorhodopsin in action and measure its effects, Li...

Vasectomy may put men at risk for type of dementia

...Preliminary evidence from the study also seemed to connect another form of dementia to a vasectomy. In a smaller group of 30 men with a dementia called frontotemporal dementia (FTD,) 37 percent had undergone a vasectomy. The earliest symptoms of FTD are personality changes, lack of judgment and bizarre behav...

Computer imaging assists with facial reconstructive surgery

... chin through the point where the neck and the jaw connect Mentocervical angle: the intersection of a line drawn from the tip of the nose to the chin and a line drawn next to the neck Facial convexity angle: the intersection of a line drawn from the forehand to the chin and a line drawn from the bottom o...

Conceptualizing a cyborg

...ons are grown in a bioreactor. Axons sprout out to connect the neuron populations on each plate. The plates are then slowly pulled apart over a series of days, aided by a precise computer-controlled motor system, until they reached a desired length. For the interface, one of the plates is an electrical...

Motor protein plays key role in connecting neurons

...ays Dr. Xiong, who is dissecting how neurons first connect with the goal of helping restore communication lost in spinal cord injuries and other disorders. "Growth is precisely controlled during development," she says and errant growth can impair brain wiring or connectivity. "Myosin X gets the DCC ...

Engineering the heart piece by piece

...ing the kinds of molecules needed to signal to and connect with other cells, and to produce the extracellular matrix that supports cells in tissue. The U-M Artificial Heart Laboratory has teamed up with a commercial partner to develop a novel perfusion system that can deliver controlled nutrient exchange...

Breathing easy: When it comes to oxygen, a bug's life is full of it

...w trachea branch to smaller trachea and eventually connect to form the tracheal network. His laboratory, which has identified more than 50 genes controlling various aspects of airway development, has also studied how oxygen-starved cells behave in developing airways. Krasnow’s laboratory is also investigatin...

Research project tackles 'regeneration' gap

...te matching funds, "The Regeneration Project" will connect scientists who work with adult human stem cells ?the building blocks of self-renewal that exist within our brain, bone marrow and blood ?with scientists who study how tissues and limbs develop in a variety of organisms. "A salamander can be injur...

Researchers show that veins stiffen as we age

... to your organs and limbs. Microscopic capillaries connect the arteries to the veins. The veins then transport the blood back to the heart. The veins are equipped with valves to prevent any backflow of blood caused by gravity as blood is returned to the heart from the lower extremities. The walls of the ve...

Growth factor stimulates rapid extension of key motor neurons in brain

...icospinal motor neurons ?critical brain cells that connect the cerebral cortex with the spinal cord and that ...ry nerve impulses to the spinal motor neurons that connect to muscles ?and that blocking IGF-1 activity reduces that growth in both cultured cells and in livin...

Neuron cell stickiness may hold key to evolution of the human brain

...uding growth and structure, and enables neurons to connect with other neurons and supportive proteins. Differences in the molecular connections of human neurons compared to the neurons of chimps, mice and other animals, could help explain why the human brain is capable of far more complex cognitive functions...

Researchers seek to design first treatment for neuroAIDS

...n their branches (dendrites), which would normally connect them to other nerve cells. Such disconnected nerve cells, if protected by the right drug, have the potential to be "reconnected," researchers said. HIV also "activates" immune cells that reside in the brain. In response, those cells set off chain re...

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