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Tag: "induce" at biology news

Female birds boost up their eggs when hearing sexy song

...males and influence mate choice decisions and even induce an alteration in the offspring's sex ratio. This study by Leitner et al. now shows experimentally that hearing attractive song also has a selective impact on female physiology. 45 female domesticated canaries participated in this study that was a co...

'Smart' genetic therapy helps the body to heal itself

...ts tested valproate and found that it could indeed induce ALDR gene expression in human cell lines and rat and human brain slices. "We then treated 8 X-ALD patients with oral valproate over 6 months", said Professor Pujol. "We collected samples before treatment, and at 3 and 6 months, and on analysing t...

Scientists discover that ancient genes dictate flowering, fall bud set

...the genes Constans (CO) and Flowering Locus T (FT) induce flowering in response to day length. It turns out ...ge. Because the short daylengths occurring in fall induce bud set, the scientists wondered if FT and CO also controlled this process. When they grew trees ori...

Important gene controlling tree growth and development found

...rable applied interest in these traits. If one can induce early tree flowering it should be possible to dramatically enhance the speed of forest tree breeding. Plant breeding has been extremely successful for the development of superior plant material for agriculture. It has, however, had a small impact on ...

Stomach receptor for H. pylori discovered

...ells with DAF. They also discovered that H. pylori induce DAF expression in cultured gastric epithelial cells and that mice lacking DAF develop attenuated stomach inflammation. "Our results indicate that H. pylori can co-opt a host protein as a receptor and that it can increase expression of this receptor...

AIDS study challenges conventional treatment guidelines for HIV patients

...nd hint at indirect processes though which HIV can induce damage to the immune system, which cannot be adequately captured by measuring HIV levels in the blood....

Killing brain tumors from within: A 'Trojan horse' approach

... double-stranded RNA gobbled up is insufficient to induce them to die. The lethal RNA approach has been applied to mice in which human brain tumors were grown. The tests proved 100% effective in eliminating the tumorous growths. An article on the work of Prof. Levitzki, along with his associate Dr....

Electronic chip, interacting with the brain, modifies pathways for controlling movement

... 2006, edition of Nature, showed such a device can induce brain changes in monkeys lasting more than a week. Strengthening of weak connections through this mechanism may have potential in the rehabilitation of patients with brain injuries, stroke, or paralysis. The authors of study, titled "Long-Term Motor...

A giant among minnows: Giant danio can keep growing

...h. One of the next steps for the researchers is to induce the condition in the giant danio. “We anticipate that the giant danio will be able to handle the muscular dystrophy better because of their ability to increase muscle,?Biga said. What makes this intriguing is that human embryos exhibit hyperplasia,...

Pilot study successful in taming allergic reactions to food

...f items that provoke reactions and, eventually, to induce complete or near-complete tolerance to those items. Burks and his colleagues modeled the study on a commonly used method for treating seasonal allergy sufferers to alleviate symptoms. In this approach, called immunotherapy, physicians give patien...

Therapeutic role found for carbon monoxide

... what we found most intriguing was that CO did not induce the death of all of the smooth muscle cells in the... that in this "co-culture" setting, CO was able to induce death of the smooth muscle cells without adversely affecting the viability of the endothelial cells....

Dragonfly's metabolic disease provides clues about human obesity

...tabolic disease in humans. "What's more, we could induce this activation in muscles from healthy individuals by exposing them to excretory-secretory products obtained from the gregarine parasites," said Schilder. The researchers also found that the muscles of parasite-infected dragonflies oxidized only ...

Common cold virus leads to death in lung transplant patients

...interesting new data suggest that rhinoviruses may induce proinflammatory responses in lung cells independent of viral replication, replication is almost certainly required for a maximal response. However, until the present report, which includes positive bronchoalveolar cultures and lung immunochemistry, i...

Researchers create genetically matched embryonic stem cells for transplantation

...n mice, but Daley, Kim and colleagues were able to induce unfertilized mouse eggs to develop through a series of chemical treatments, then generated embryonic stem cells. Next, they used genetic typing to identify those embryonic stem cells that shared with the egg donor the genes responsible for tissue ...

Researchers discover mechanism that determines when detailed memories are retained

...nd may exist. His laboratory also was the first to induce a specific memory by stimulating the system involving acetylcholine in the brain, setting the stage for the latest findings. ...

The biggest bug in gut discomfort

...an that the bug had evolved a special mechanism to induce its uptake into these nonphagocytic cells and establish its own intracellular niche. Watson and Galan set out to follow C. jejuni down the host cell’s endocytic pathway. Much of the cell’s incoming traffic is usually routed to compartments called lys...

Novel regulatory mechanism identified for key tumor suppressor p53

... of the p53 protein to shut down cell division and induce cell death points to why the availability of a repressive mechanism such as the one outlined in the new study might be crucial for cellular survival. "You can imagine that if the p53 protein were present at all times and able to bind to DNA, cells ...

MIT material stops bleeding in seconds

...ronment. And unlike some other agents, it does not induce an immune response in the animals being treated. When the solution containing the peptides is applied to bleeding wounds, the peptides self-assemble into a gel that essentially seals over the wound, without harming the nearby cells. Even after exce...

Rescuing injured hearts by enhancing regeneration

... damage the liver. "Every treatment trying to induce proliferation of cardiomyocytes also carries a risk of inducing tumor growth, and thus you have to limit the time and location of treatment," Engel adds. One possibility is to inject smaller doses of the agents into the damaged area of the heart ...

Progress made in HIV vaccine development

...livery vaccination approaches has the potential to induce higher levels of T cell responses and a different quality of response than either approach by itself." As Robinson and Weinhold add, the idea behind combining strategies is that "the vaccine uses DNA to prime the immune response and a replication d...

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