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Tag: "late" at biology news

New report: Explosive growth changes salmon industry

... salmon catches from more than $800 million in the late 1980's to less than $300 million. The decline in value of wild salmon catches has had wide-ranging economic and social effects on wild salmon fishermen and fishing communities. "Wild salmon could never supply the market demand being met by farme...

How trees manage water in arid environments

...y moisture present in bedrock fractures. Because a late spring/early summer period without any rain is very common in southern Arizona, the mountain forest must have evolved the capability to survive it. The rapid recovery of this forest when heavy rains begin confirms the tight coupling between the trees...

Newborn brains grow vision and movement regions first

...of brain development takes place between birth and late childhood that we know very little about. This study gives us the first glimpse into understanding that," he said. The study is the first to systematically obtain very high resolution magnetic resonance imaging (MRI) scans on a large group of newbo...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...t mutations in Dpc4 can also occur, but they do so late in the course of disease progression. The current study showed that the combination of Kras and an early mutation of Dcp4, in which one copy of the suppressor gene is eliminated, lead to cancer by a different path, beginning with the creation of a di...

New technologies coming too fast for Indian farmers

...arming troubles predate its introduction. In the late 1990s, there was an epidemic of farmer suicide in the Warangal District. Many farmers are deeply in debt and have been for generations. Stone's study shows that the farmers' inability to recognize the varying seeds being sold at market contributes ...

Study shows hope for early diagnosis of Alzheimer's

... the earliest indication of this common scourge of late life.? The researchers employed signal processing and automated neural network analysis of event related potentials (ERPs) of the EEG signals, monitoring how the patients?brains reacted to a series of auditory stimuli. Clark’s team conducted neu...

Turning green gunk to gold, anti-cancer gold

...l cryptophycins, the most difficult step came very late in the synthesis, at the point at which a key part called an epoxide---a highly strained, three-membered ring oxygen-containing group, crucial for the drug's anti-cancer activity---becomes attached to the molecule. The epoxide group can be attach...

Ebola outbreaks killing thousands of gorillas and chimpanzees

...eports of large ape die-offs first surfaced in the late 1990s, outbreak amplification was assumed to be through "massive spillover" from some unknown reservoir host. The new study, conducted by researchers from the Max Planck Institute for Evolutionary Anthropology, Cambridge University, and Stony Brook U...

UCSF brain tumor vaccine trial shows promising results

... larger, multi-center phase 2 study is planned for late 2007. Derived from each individual’s tumor, vitespen contains the “fingerprint?of the patient’s particular cancer and is designed to reprogram the body’s immune system to target only cancer cells bearing this fingerprint. The vaccine is intended t...

New study may show how to forestall a fatal, virus-caused immune-system meltdown

...ule normally associated with cancers was activated late in infection with the lethal strain of the virus. “We can go in and design an experiment where we can start testing drugs that already have FDA approval,?Bowick said. “If we can go straight from discovery to drug candidates, that’s quite a big leap f...

Post oak grasshoppers emerging

...ve. The post oak grasshoppers become adults in late April, and from early May to mid-June the females lay their eggs in the soil. A female typically lays five to six eggs at a time in a pod, and will produce two to four pods over her lifetime. In the spring, when post oak leaves begin to emerge, the e...

Prenatal cocaine's lasting cellular effects

...ndow of time during gestation -- equivalent to the late first trimester and early second trimester in humans -- caused specific alterations in brain circuits that use the neurotransmitter dopamine. Additionally, these cocaine-exposed offspring showed attention problems as well as insensitivity to stimulan...

Scientists find new genetic clue to cause of Alzheimer's disease

...own as SORL1 may be a factor in the development of late onset Alzheimer's disease, an international team o...t Alzheimer's, and one that increases risk for the late onset form. This discovery provides a completely new genetic clue about the late onset forms of this...

Inflammation may play role in metastasis of prostate cancer

...ggers metastasis, which is the spread of cancer in late stages of prostate cancer development. The finding...evel of Maspin is present, but it is turned off in late stages. Early tumors contain low amounts of active nuclear IKKa, whereas late-stage tumors contain ...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

... Napoleon, born Aug. 15, 1769, ruled France in the late 1700s and early 1800s. He conquered much of Europe, but he was ultimately defeated at the battle of Waterloo in 1815. The British then exiled him to St. Helena, an island in the South Atlantic Ocean. He died May 5, 1821. The cause of his death ...

Birth rate, competition are major players in hominid extinctions

...d have the capacity to store food and water in the late Pleistocene. No evidence exists that Neandertal could store either. Both Neandertal and modern humans suffered from the primate curses of single births widely spaced. For Neandertal, cultural adaptation was not sufficient to overcome and compete...

Cancer researchers add spice to research against rare neuromuscular disease

...as explained some previously baffling developments late in the course of that disease, opening the door to newer treatments. In 1988 Chang was the first to clone the androgen receptor, and he was the first to discover that the protein needs molecular allies called co-factors to accomplish many of its t...

DNA analysis reveals rapid population shift among Pleistocene cave bears

...n of the bears inhabiting a European valley in the late Pleistocene era. The findings illustrate the ability of DNA sequence analysis to reveal aspects of animal population dynamics in the distant past and potentially illuminate the influence of human migrations in animal population changes. The new work,...

Bacteria research offers hope for new vaccine against meningococci

...0 people were affected in a matter of weeks in the late 1990s. Without treatment, mortality among those who contract the disease is 85-90 percent, with treatment some 10-15 percent. Patients also run a high risk of serious disability after recovery. Only humans are susceptible to infection from meningo...

Motor protein plays key role in connecting neurons

...as the neuron develops. She has documented that in late stages of development, when the axon needs to stop growing, a shorter molecule, minus the motor, is expressed. "Probably after the neuron is developed, the major work of myosin is done. There are many cleavage sites in the middle and this typically l...

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