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Tag: "aggressive" at biology news

Study shows lizard moms dress their children for success

...blotched lizards. Orange-throated males are highly aggressive and usurp territory from other lizards; yellow-thr...ne induced a striped back pattern (suitable for an aggressive male spending lots of time in the open). Stripes were also induced in non-orange daughters. Both of ...

Researchers use MRI to predict recovery after spinal cord injury

...lings said, "these findings could result in a more aggressive clinical strategy for patients who may appear to have a severe SCI but may indeed have the capacity for substantial neurological recovery." According to the National Spinal Cord Association, 250,000 to 400,000 people in the United States are livin...

Mule deer moms rescue other fawns

...mple survival, said Lingle. "Having a rigid and aggressive response to the simple sound of a fawn distress ca..." Mule deer may have developed a more effective aggressive defence because they rely on fighting to protect themselves against predators year-round, while whit...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...ant related to lycopene, and an increased risk for aggressive prostate cancer. According to the researchers, th...rs, was the relationship between increased risk of aggressive prostate cancer ?defined as disease that has spread beyond the prostate ?and beta-carotene, another ...

Scientists identify pancreatic cancer stem cells

...es that these cells are likely responsible for the aggressive tumor growth, progression, and metastasis that def...r, she said. The markers that define the highly aggressive pancreatic cancer subtype are not identically matched to those found in aggressive breast cancer, th...

UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice

In experiments with laboratory mice that bear aggressive human breast cancers, UC Davis researchers have used hot nanoprobes to slow the growth of tumors -- without damage to surrounding healthy tissue. The researchers describe their work in the March issue of the Journal of Nuclear Medicine. "We have dem...

Study finds surfing safer than soccer

...ommon injuries reported. This is likely due to the aggressive turning and aerial maneuvers, which score highly in competitions, but also appear to place high stress on a surfer's knee," says Nathanson, who is also an emergency physician at The Miriam Hospital and an assistant professor at Brown Medical School, ...

Female Antarctic seals give cold shoulder to local males

...ewer parasites, and in the case of males, are more aggressive and father more offspring. It had long been assumed that the females were passive, simply mating with their nearest male. However, using paternity tests, the scientists demonstrated that only a quarter of the females conceived to their nearest mal...

Gene variations contribute to aggression and anger in women

...nin activity is related to a decrease in angry and aggressive behaviors. In the study being presented today, researchers sought to determine if this relationship was genetically determined. The study is the first to look at the relationship between variations in the serotonin receptor 2C gene and anger and host...

Synthetic peptide targets latent papilloma virus infections

...tein-Barr virus, the cause of mononucleosis and an aggressive form of lymphocytic leukemia called Burkitt's leukemia, and the Kaposi's sarcoma virus, which can develop to cancer in those with AIDS. ...

A genetic 'gang of 4' drives spread of breast cancer

...ession of target genes. "We found that depriving aggressive metastatic tumor cells of these genes decreased both their ability to grow large aggressive tumors in the mouse mammary gland and also the ability to release cells from these tumors into the c...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...stic lesions that can be detected earlier, is less aggressive and has a 50 percent long-term survival rate. Why ...ing properties of TGFb and thereby manifest a more aggressive behavior. "With accurate animal models of both forms of pancreatic ductal cancers now in hand, it...

Chemo combination improves survival in asbestos-related cancer

...multicenter study finds. Mesothelioma, a rare but aggressive form of cancer that occurs in the lining of the lu... a very bad prognosis are often willing to undergo aggressive therapy, although the toxicity is serious and potentially life-threatening." ...

A rarity among arachnids, whip spiders have a sociable family life

...vior for these arachnids long-thought to be purely aggressive and anti-social, according to a Cornell researcher. Social behavior is extremely rare in arachnids, a class that includes spiders, amblypygids, scorpions and mites, among others; only 76 (or less than 0.1 percent) out of the 93,000 known arachnid s...

Molecular differences between early and advanced melanomas could provide new drug targets

... immunocompromised (nude) mice, the mice developed aggressive tumors that expressed high levels of VEGF, whereas...mitochondrial mutations were not essential for the aggressive growth of melanomas induced by Akt. "Our research shows that Akt overexpression on its own is su...

Scientists find method to pick noncompetitive animals, improve production

... previous research, Muir showed that choosing less aggressive animals from a group for breeding purposes increas... naturally. For instance, chickens bred to be less aggressive don't engage in as much pecking, which often causes severe injury and even death. The energy that an...

Finnish scientists discovered a new approach to treat virus-induced lymphomas

...coma and primary effusion lymphoma (PEL). PELs are aggressive lymphomas with reported median survival time short...ere are no current therapies effective against the aggressive KSHV-induced PEL. KSHV displays two patterns of infection: latent and lytic phase. During latency, o...

Selective marker found to indicate aggressive form of breast cancer

...arker for basal epithelial breast tumors, a highly aggressive cancer with similarities to mammary stem cells, th...ther screening subtypes, which likely reflects its aggressive nature. These important clinical correlations likely explain why this subtype disproportionately ac...

Elderly spinal cord injuries increase five-fold in 30 years, Jefferson neurosurgeons find

...atients and should be factored in when considering aggressive interventions and counseling families regarding prognosis." However, they also found that these patients have had an increase in survival over this period. Admissions by geriatric SCI patients have increased five-fold and the percent...

Birth rate, competition are major players in hominid extinctions

... of tools and were extremely successful as active, aggressive hunters of large game. We see evidence of hunting, kill sites, butchery and even herding off cliffs. We find thrusting spears and butchering knives." The Neandertal encountered increasing environmental seasonality with longer cold seasons and short...

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