Tag: "chemicals" at biology news
Hopkins researchers uncover critical player in cell communication
...wn TFII-I and separately assaulting the cells with chemicals
caused the cells to take up more calcium than usual. The researchers realized that when they depleted the cells of TFII-I, the cell responded by installing more calcium channels in their surfaces that allow calcium and only calcium to enter the cel...
Natural anti-viral enzyme helps keep cancer cells alive, researchers find
.... UT Southwestern researchers are now looking for chemicals
that block TBK-1. They are also screening cancer cells for similar biochemical pathways essential to their survival but not essential in normal cells. "This is making us think that there are many other surprises awaiting discovery regarding biologica...
Ghengis Khan wonder berry could conquer heart disease
...buckthorn is a known source of biologically active chemicals
and is used in Tibet, Mongolia, China and Russia f...more than 40% of polyphenols - the same beneficial chemicals
found in red wine, 50% of flavonoids and 70% of vitamin C present in the pulp of the red berries. ...
An infectious agent of deception, exposed through proteomics
...genetic sequence to those known to make and modify chemicals
in the microbe's cell wall called peptidoglycan. ...armed with this mouse-model information can target chemicals
or immune responses that disrupt peptidoglycan synthesis and other processes linked to Salmonella's ...
Parasitic plants sniff out hosts
... flail about looking for a host but sense volatile chemicals
produced by other plants and identify potential ho...world and is a difficult pest to eliminate because chemicals
that kill the parasite also often kill the host plant. "There is currently no reliable way to get ri...
With record resolution and sensitivity, tool images how life organizes in a cell membrane
What's the difference between a lifeless sack of chemicals
and a living cell? It's all in the way they're organized, according to Stanford biophysical chemist Steven Boxer. With colleagues at Stanford, the University of California-Davis and Lawrence Livermore National Laboratory, he has developed a way to im...
Fire ant-attacking fly spreading rapidly in Texas
... specialize on small or large workers, on distinct chemicals
laid down by the ants on trails, on time of day and on season and so forth. Our goal is to copy what we believe to be nature's complex control system." Gilbert and his colleagues are looking at the fire ant-fly relationship in parts of Argentina th...
Scientists find popular acne drug leads to depression-related behavior in mice
...ffects the brain." Accutane belongs to a group of chemicals
called retinoids. This group includes vitamin A and vitamin A-related compounds known to affect development of the nervous system. For this reason Accutane is not prescribed to pregnant women. "Retinoids have long been studied for their ability to a...
China's environmental challenges
...iversity) tackle the topic of endocrine disrupting chemicals
in China's rivers and coastal waters, looking particularly at the impacts on Chinese sturgeon, night herons, and carp--all of which have exhibited sex organ malformations. Frontier's Finishing Lines columnist Katherine Ellison highlights Goldman Env...
Define 'precautionary principle' to avoid clashes over biotechnology under World Trade rules
... the environment and the use for refrigeration of chemicals
later found to destroy atmospheric ozone. So far, however, the precautionary principle has not been adopted authoritatively beyond international environmental law. The UNU-IAS report notes differences between Europe and North America are highly p...
California scientists find natural way to control spread of destructive Argentine ants
...ciety. Slight alterations in the "recognition" chemicals
on the exoskeletons of these closely related pests...esults strongly suggest that by manipulating these chemicals
on the exoskeleton, one could disrupt the cooperative behavior of these ants and, in essence, trigge...
Of rice and hen: Fashions from the farm
...ly of cellulose. Using a special combination of chemicals
and enzymes, a process that is now under patent review, Yang and Reddy developed fibers from the straw. The properties of the fibers indicate that the fibers are capable of being spun into fabrics using common textile machinery. The resulting fabric ...
Biodegradable napkin -- featuring sensitive nanofibers -- may quickly detect biohazards
...s containing antibodies to numerous biohazards and chemicals
and would signal by changing color or through another effect when the antibodies attached to their targets. Users would simply wipe the napkin across a surface; if a biohazard were detected, the surface could be disinfected and retested with another ...
Animal physiology conference sheds light on human physiology
...re runoff contaminated the water with agricultural chemicals
-- died. The frogs where he did his dissertation work 10 years ago have disappeared. Ditto for the area he researched five years ago. His work translates to humans, he says. For instance, a clinical study in Missouri found a correlation between low ...
High-value chemicals produced from ethanol feedstocks could boost biorefinery economics
...ificant economic boost from the sale of high-value chemicals
such as vanillin flavoring that could be generat... same feedstock. Revenue from these "side stream" chemicals
could help make ethanol produced by biorefineries cost competitive with traditional fossil fuels. ...
Genome code cracked for breast and colon cancers
...y. Within each tumor cell, billions of individual chemicals
called nucleotides pair together in a preprogrammed fashion to build the rungs of a DNA ladder that compose genetic instructions. Changes called mutations in the nucleotides can create coding errors that transform a normal cell into a cancerous one....
Fast-freeze snapshot yields new picture of nerve-muscle junction
...naptic proteins affect release of neurotransmitter chemicals
at the junctions -- the signal that enables nerve cells to issue commands. The technique described in the new study, high-pressure freeze electron microscopy and immuno-gold staining, now provides an accurate picture of where these synaptic proteins...
UW-Madison researchers find new way to 'sweeten' key drugs
...nts and other organisms such as bacteria make many chemicals
that can be used to treat human disease. Such natural agents are primary sources of drugs employed to fight cancer and thwart infection. Key chemical features of such drugs are natural sugars, molecules that frequently dictate a chemical compound's ...
Chemical compounds restore normal glucose levels and insulin action in obese mice
... cellular models and demonstrated how two of these chemicals
- PBA (4-phenyl butyric acid) and TUDCA (taurine-conjugated derivative) - reduced ER stress, prevented JNK activation, and restored normal glucose homeostasis in type 2 diabetic mice. The researchers used the ob/ob murine model, where mice are both...
New genetic link to cot death identified
...h factor (VEGF) are involved in the production of chemicals
called cytokines which are important for the correct functioning of our immune system. Specific variants of these cytokine-producing genes, says the research, leads to an excessive inflammatory response to bacterial infection resulting in cot death...
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