Tag: "needed" at biology news

Bioartificial kidney under study at MCG

...lso can harm the kidneys. Even the contrast medium needed to study kidney function can be toxic. "I have seen healthy people on antibiotics for urinary tract infections develop renal failure; that's not uncommon, but it's most dreaded in the critically ill patient," Dr. Szerlip says. ...

Wisconsin scientists grow critical nerve cells

...rmones - that provide the exact growing conditions needed to steer the cells down the correct developmental ...ain the growth factors and other natural chemicals needed to guide cells from one stage of motor neuron development to another. But once past a certain point,...

Priming embryonic stem cells to fulfill their promise

...cells are considered the blank-slate, raw material needed torepair or replace damaged or missing liver, nerv...searchers to find the optimal extracellular matrix needed to turnembryonic stem cells into cells with therapeutic potential," saidBhatia. "We think we've deve...

Growth in the sea comes down to a struggle for iron

...tribute to the diverse oceanographic understanding needed to determine whether or not adding iron to ocean waters is a wise tool in any attempts to manage a changing climate. ...

New, automated tool successfully classifies and relates proteins in unprecedented way

...ntify and disable part of a tumor cell's machinery needed toprocess proteins for cancer growth."Our tool represents a step forward because it is based on standardizedfeatures and not on features chosen by the human eye, which isunreliable. By automating the clustering of proteins inside cellimages, we also ...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

...e a consequence, said Dr. Patti. "In our study, we needed to find out what was happening in these mice, before they got the problem." Their insulin levels provided a clue. In the prenatally undernourished mice, the insulin secretion stayed about the same, regardless of the glucose level in the bloodstream....

Emory Study Tests Bone Marrow Stem Cells to Improve Circulation in Legs

... progenitor cells (EPCs), which isthe type of cell needed to make new blood vessels and to repair damagedones.Patients in the clinical trial will be given an injection of either agrowth factor called GM-CSF (granulocyte-macrophage colony stimulatingfactor) or placebo (sterile salt water) three times a week ...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...as a fait accompli--somethingthat the plaques only needed to inflict on nerve cells once. Accordingto Holtzm...sis by the effects of the plaques.More research is needed to determine if similar effects will occur inhumans. Abeta antibodies are currently being considered...

Key molecule in plant photo-protection identified

...as a fait accompli--somethingthat the plaques only needed to inflict on nerve cells once. Accordingto Holtzm...sis by the effects of the plaques.More research is needed to determine if similar effects will occur inhumans. Abeta antibodies are currently being considered...

Tiny particles could solve billion-dollar problem

...will be efficient enough to provide the throughput needed to make the whole approach effective. Tests in Wong's lab have found that the gold-palladium nano-catalysts break TCE down about 100 times faster than bulk palladium catalysts. ...

Plants, animals share molecular growth mechanisms

...o proceed normally, activators such as ARP 2/3 are needed to trigger actin filaments' formation and growth, Szymanski said. However, scientists don't know the specific function of certain actin filaments. The molecular tools Szymanski's research team developed will help scientists learn more about these fun...

Researchers Uncover Key Step In Manufacture of Memory Protein

...lay a crucial role in the manufacture of a protein needed for long-term memory, according to a team of resea...vered that the enzyme carboxypeptidase E, (CPE) is needed to deliver the early, or inactive, form of BDNF ?proBDNF ?to a special compartment in the neuron (ne...

Scientists Replicate Hepatitis C Virus in Laboratory

...t cell into the culture medium. Further testing is needed before the researchers can determine if the viral ...lease from host cells. Another HCV model system is needed to show the beginning stages of the viral life cycle ?viral entry into host cells and viral activity...

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

...molecules that do not occur naturally,but that are needed for new generations of vaccines and therapeuticagents, including vaccines for HIV and other viral diseases. Thistechnology also will facilitate development of new medications throughthe creation of humanized yet synthetic antibodies that could beespe...

Iron Deficiency Sparks Dramatic Changes In Gene Expression

...ls areproduced, and the body is deprived of oxygen needed for energymetabolism. Iron deficiency causes wide-ranging symptoms from fatigue,weakness and cognitive deficits to serious heart complications anddevelopmental disorders. Iron deficiency also contributes to thepathology of hereditary blood disorders,...

Gene variations explain drug dose required to control seizures

...keup might also influence the dose of chemotherapy needed to successfully fight a tumor, while minimizing often intolerable side effects. ...

Purdue proves concept of using nano-materials for drug discovery

...s of reactions with the same amount of protein now needed to run only about 10 reactions." Findings being reported in the paper detail how researchers created the device with the same "microfabrication" techniques used to make computer chips. The reactors range in diameter from about 400 to 60 microns, or ...

Scientists rid stem cell culture of key animal cells

...vine in origin, is the other animal material still needed to culture stem cells. Xu became interested in unveiling molecules derived from the mouse feeder cells because, in their absence, stem cells start to differentiate within two to three days. Xu started by evaluating the effect of changing stem cell g...

New research questions basic tenet of neuron function

... sequester neurotransmitters and release them when needed into the synapse, or space between nerve cells, wh... Dr. Kavalali said. "Higher-resolution analysis is needed to test whether the two sets of vesicles are indeed distinct." Dr. Kavalali said that if the two ty...

Critical role in programmed cell death identified

...l death, or apoptosis, is essential for life; it's needed for nervous system development and it keeps the body up and running. Miscues and failures are instrumental in cancer, autoimmune disorders or neurodegenerative diseases. Mitochondria, the organelles responsible for producing energy to fuel cell proc...

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