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Tag: "toxins" at biology news

Chemists create 'Superbowl' molecule; May lead to better health

...plications, including the removal of environmental toxins and aiding in chemical purification procedures, the investigators say. Their study was published in the Dec. 29 print issue of the journal, one of the peer-reviewed publications of the American Chemical Society, the world's largest scientific society...

Inexpensive, mass-produced genes core of synthetic biology advances at UH

...oning organisms that canproduce energy, neutralize toxins and make drugs and artificial genesthat could eventually be used in gene therapy procedures. Gene therapyis a promising approach to the treatment of genetic disorders,debilitating neurological diseases such as Parkinson’s and endocrinedisorders such ...

U of M researcher examines newly emerging deadly disease

...oves to the lungs, making superantigens (bacterial toxins that activate large numbers of T cells), often leading to death due to hypertension and shock. Purpura fulminans has been identified in five cases in the Minneapolis-St. Paul, Minn., metropolitan area during 2000-2004, as described in the April 1, 20...

Spider Venom Could Yield Eco-Friendly Insecticides

...y, a small group of these spiders yields plenty of toxins for King's chemical analysis. Funnel-web spider v.... King is studying the molecular structures of the toxins that selectively target the nervous systems of insects to understand the toxins' mechanism of action...

Solution to Pollution: New Bacteria Eats Toxic Waste

..., yet Sims found the land to be relatively free of toxins and asked the question, why? After conducting soil analysis tests, Sims found microbes in the soil that had destroyed the toxic chemicals. Sims then collaborated with researchers from the Utah State biology department to identify the microbes. The t...

Researchers discover molecule that causes secondary stroke

...rcher Joseph Clark, PhD, results from a buildup of toxins caused by bleeding from the initial stroke. "Norma... Clark says. "After a hemorrhagic stroke, however, toxins given off by the brain bleed contribute to the development of specific molecules that later causes t...

Development of portable infectious disease detector

...ps of cells and studying how they respondto drugs, toxins and pollutants. To do so, the interdisciplinary teamhas developed two basic technologies: special electrodes that canmeasure the concentrations of the chemicals that cells consume andexcrete in extremely small volumes and the use of fluids flowingthr...

UCSD discovery may help extend life of natural pesticide

...indings should facilitate the design and use of Bt toxins to prevent insects, which the researchers believe ...k furthermore opens up the possibility of using Bt toxins against roundworms that parasitize humans. "These parasites infect nearly one-third of the human po...

World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics

...sport time and the pancreas is severely damaged by toxins which circulate in the blood stream after brain death." "Our expectation is that these islets from near-perfect organs will work better, although it's too early to tell," he says. The recipients use the same drugs to prevent organ rejection as are ...

Researchers uncover sequence of major rice pathogen

...ickly," Dean says. M. grisea undoubtedly produces toxins which may enable it to be a more effective pathoge...be to take apart the clusters and learn more about toxins and their production. "The primary mission is to uncover the organism's weaknesses. You do that by ...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...blooms, known as red or brown tides, which release toxins in the water that can poison mollusks and fish. Excessively large blooms can also overwhelm a marine ecosystem by depleting oxygen in the water. Scientists suspect that many harmful blooms are artificially fueled by fertilizer runoff from farms, whic...

Protein prevents detrimental immune effects of bacterial sepsis

...mmune response meant to clear the pathogen and its toxins actually causes damage to the host's own tissues w...tics that delicately balances removal of bacterial toxins and damage to host tissues. ...

UCLA scientists store materials in cells natural vaults

... and DNA * Extracting and imprisoning cellular toxins into the vault * Stabilizing proteins in vaults to increase their lifespans AUTHORS: Leonard Rome, professor of biological chemistry and senior associate dean of research; Bruce Dunn, professor of material science and engineering; Jeffrey Zink,...

Mutation in clams protects against paralytic shellfish poisoning but raises human health risk

Just like people, clams can be affected by the toxins that cause paralytic shellfish poisoning (PSP), bu... mutation in clams that gives some protection. PSP toxins interfere with nerve function, and the mutation, which changes a single amino acid in a sodium chann...

Venom doc tracks down snake bioweapons

...rs ago. Since that time, various prey-immobilizing toxins have evolved from innocuous proteins that were nor...ves upon injection. Over time, these newly derived toxins became a normal part of the saliva protein repertoire. To date, 24 different snake venom toxins have...

Chronic Sinus Infection Thought To Be Tissue Issue, Mayo Clinic Scientists Show It's Snot

...ng now on removing the mucus, which is loaded with toxins from the inflammatory cells, rather than the tissue during surgery. Leaving the mucus behind might predispose patients for early recurrence of the chronic sinus infection." Dr. Ponikau conducted this research along with Hirohito Kita, M.D., and Gail...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

...y -- a needle-like projection -- to inject various toxins into the cell, killing it. The researchers endowed these bacteria with an additional enzyme, which the microbes also injected in cells. This enzyme can snip the green dye into two pieces. When that happens, those cells, when exposed to fluorescent li...

Immune system's distress signal tells bacteria when to strike back

...s immune system. It can repel antibiotics, secrete toxins similar to those used by anthrax, latch onto the bowel wall, bore its way through, and flow into the blood stream. As a consequence, patients with widespread Pseudomonas infection often die within a few days. Alverdy and colleagues were able to pinp...

Insects develop resistance to engineered crops

.... But when crops engineered with just one of those toxins grow nearby, insects may more rapidly develop resi...op plants, such as maize and cotton, creates these toxins that are deadly to insects but harmless to humans. Bt crops were first commercialized in 1996, and ...

Say what? Bacterial conversation stoppers

...olera bacteria sense a quorum, they turn off their toxins and excrete an enzyme to cut themselves loose from the intestine, so they can move out of the body where they can infect another person. Here, E. coli squelched much of the quorum-sensing response of the cholera bacteria, although the effect was no...

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