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Tag: "disrupt" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...eased exposure stress hormones, like cortisol, may disrupt a childs formation of a bundle of nerve cells in the brain called the suprachiasmatic nucleus which act as a signaling system that tunes the bodys internal clock. This signaling system helps to properly regulate daily rhythms of waking, sleeping, e...

Pesticides choke pathway for nature to produce nitrogen for crops

... application or exposure to crops through runoff – disrupt natural nitrogen-fixing communications between crops and soil bacteria. The disruption results in lower yields or significantly delayed growth. In a paper appearing online this week ahead of the regular publication by the Proceedings of the Nation...

For many insects, winter survival is in the genes

... the winter. "There may be steps we can take to disrupt the diapause process and make an insect vulnerable to low temperatures," Denlinger said. "At this point, the findings broaden our palette of players that contribute to cold tolerance in insects." He said the next step is to figure out the unique f...

'Insulator' helps silence genes in dormant herpes virus

...eutical companies targets for designing drugs that disrupt those mechanisms. The studies also have implications for treating and manipulating other types of viruses, Zhou says. "This study provides one of first examples of how viral chromatin is organized in a very similar way to host chromatin," Zhou say...

How the brain's backup system compensates for stroke

...used magnetic pulses to temporarily and harmlessly disrupt function in the left PMd in human volunteers. To m...erformance. When they also used magnetic pulses to disrupt the right PMd after the performance recovery, the subjects showed a renewed deficit in performance o...

Premature births may be linked to seasonal levels of pesticides and nitrates in surface water

...r throughout the U.S. Nitrates and pesticides can disrupt endocrine hormones and nitric oxide pathways in the developing fetus," he said. "I believe this work may lay the foundation for some of the most important basic and clinical research, and public health initiatives of our time. To recognize that wh...

DNA repair proteins monitored at double-strand break

...M to the break; and that ATM and NBS1 cooperate to disrupt nucleosomes—the compact packages formed when strands of DNA wind around proteins, called histones, like thread around a spool. Disruption of the nucleosome at the site of a double-strand break allows the DNA to unravel and expose the area to repair p...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

... that affect immunity" The challenge was how to disrupt the flies' sleep. Schneider tried building a machine that jostled the flies randomly. "All it was really good at doing was throwing the tubes around the room," said Schneider. "Also it was too regular, the flies got used to it so they could nap." ...

Genome of yellow fever/dengue fever mosquito sequenced

... develop novel control strategies that efficiently disrupt the transmission cycle or enhance existing strategies. The Ae. aegypti genome sequence is expected to stimulate efforts to elucidate interactions at the molecular level between mosquitoes and the pathogens they transmit to humans. ...

Fast and slow -- How the spinal cord controls the speed of movement

... They suspect that damage to these brain cells may disrupt the release of dopamine, further complicating free movement. Fetcho and his group are building a transgenic line of fish with those brain cells labeled so they may be targeted and removed with lasers....

UCLA study uncovers clues for why Graves' disease attacks the eyes

...xtra receptors allow the new antibody and IGF-1 to disrupt the programming of the T-cells," said principal investigator Dr. Terry Smith, professor of medicine at the David Geffen School of Medicine and chief of molecular medicine at Harbor-UCLA Medical Center. "The antibody provokes the receptor to sign...

Noise echoes in cell communications

...mple form of communication works might show how to disrupt it, and the resulting infection. The team will next apply their idea to the nervous system, where the cell's entire job is to communicate. Published in top journals on theoretical biology, this collaborative research between biology and compute...

Row over study puts Korea's scientific community under scrutiny again

...nalist Jonathan Gornall. It is also threatening to disrupt Korea's efforts to recover scientific credibility in the wake of the recent scandal over Woo-Sok Hwang's stem cell research. Dr Kim claims a paper about premature ovarian failure that he originally published in the Korean Journal of Obstetrics and...

Scientists find genes involved in the battle between Hessian flies and wheat

...an fly larval digestive system. These poisons then disrupt the insects' gut function. "The larvae probe the plant to open a sustained feeding site," said Jonathan Neal, a Purdue entomologist and another author of the paper. "Resistant plants block the larvae from establishing a feeding site. It's as ...

Brown cancer biologists identify major player in cell growth

...growth," Rosmarin said. "Now that we know a way to disrupt GABP and stop division, there is the possibility that a drug can be made to do the same thing in cancer cells." ...

Researchers find gene mutation that causes infertility in male mice

...hanges that are benign in humans versus those that disrupt sperm or egg production. The researchers are engaged in a project to identify ultimately all the genes needed for fertility in mice and apply this information to the human situation. ...

FSU researchers determine a critical factor in workings of proteins

...he organism." Mutations are one factor that can disrupt quick association between proteins and lead to disease, he said. "For example, Wiskott-Aldrich syndrome, a pediatric genetic disorder characterized by eczema, immune deficiencies and low blood-platelet counts, can be traced to mutations on the Wis...

Gallium: A new antibacterial agent?

...um (Ga), which is chemically similar to Fe and can disrupt biological systems by substituting for Fe, inhibits the in vitro growth of Pseudomonas aeruginonsa; even multidrug resistant strains of P. aeruginonsa isolated from individuals with cystic fibrosis. Ga also prevented P. aeruginonsa forming biofilms, ...

Stretching DNA to the limit

...ognize specific molecules, and can thus completely disrupt its ability to replicate and interact with the transcriptional machinery to synthesize proteins. Marszalek and his colleagues have also examined synthetic DNA to figure out the extent to which different bases are affected by UV light. They conclude t...

Key found to kill cystic fibrosis superbug

...s they will let us come up with novel molecules to disrupt the making of Ara4N," says Valvano. "These molecules could then be tested as novel antibiotics." Valvano is a Professor and Chair of the Department of Microbiology and Immunology, a Canada Research Chair in Infectious Diseases and Microbial Pathogene...

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