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Tag: "growth" at biology news

Wisconsin scientists grow critical nerve cells

...constitute naturally secreted chemicals - a mix of growth factors and hormones - that provide the exact grow...on growth, Li foraged labs worldwide to obtain the growth factors and other natural chemicals needed to guide cells from one stage of motor neuron development...

A new mechanism of regulating RNA degradation

...ing pathways, such as those mediated by changes in growth conditions." That would allow the cell to differentially control the level of SMD-target RNAs, while leaving the NMD-regulated RNAs untouched. This is likely to be the "tip of the iceberg" for Staufen1's function in mammalian cells, said Maquat, and...

FDA Approves Human Hookworm Vaccine for Phase I Safety Trials

...ing pathways, such as those mediated by changes in growth conditions." That would allow the cell to differentially control the level of SMD-target RNAs, while leaving the NMD-regulated RNAs untouched. This is likely to be the "tip of the iceberg" for Staufen1's function in mammalian cells, said Maquat, and...

It's not all genetic: Common epigenetic problem doubles cancer risk in mice

...e engineered to have a double dose of insulin-like growth factor 2 (IGF2) develop more so-called precursor cells within the lining of the colon than normal mice. When these mice also carried a colon-cancer-causing genetic mutation, they developed twice as many tumors as those with normal IGF2 levels, the re...

Priming embryonic stem cells to fulfill their promise

...iggering the differentiation of stem cells:soluble growth factors, adjacent cells, mechanical forces, andext...an now take whatwe've learned, add combinations of growth factors, and even add othercells to embryonic stem cells, we may be able for the first time tostudy ...

Growth in the sea comes down to a struggle for iron

...some major regions of the oceans can stimulate the growth of diatoms and other phytoplankton, but something ...rsistent excess of nutrients because phytoplankton growth is reduced." Many scientists from around the world are now studying iron effects in these regions. ...

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

...ion, many other factors can result in intrauterine growth restriction and low birth weight. The Joslin study, published in the March edition of Diabetes, reinforces what scientists have known from previous studies in humans: Infants with low birth weight -- typically defined as under five and one-half poun...

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

...muscles do not receive enough blood, thebody makes growth factors that stimulate the bone marrow to releasestem cells that "home" to the muscle that is not getting enough blood.These stem cells include endothelial progenitor cells (EPCs), which isthe type of cell needed to make new blood vessels and to repa...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...between cells," said Gage."Also, components of the growth medium have the capacity to change theimmunologica...lution to the problem was to usehuman serum in the growth medium," Varki said. When the team grew thecells in heat-inactivated human serum specially selected ...

Plants, animals share molecular growth mechanisms

...rotein complex that apparently switches on plants' growth machinery, has opened a scientific toolbox to lear...o-cell adhesion," Szymanski said. "They affect the growth of the whole plant and also the shape and size of types of cells in the plant." Results of the stud...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...n offer a unifying hypothesis for the development, growth and evolution of the disease, and complete the review with a discussion of the clinical implications for practicing physicians. ...

Plants respond similarly to signals from friends, enemies

...ich is part of a pathway that leads to a series of growth changes that include the formation of either nodules housing bacteria or giant cells from which the nematodes feed. The scientists also discovered that, like rhizobia and contrary to popular belief, the root-knot nematode signals plants from a dista...

The secret to longevity in tubeworms

...down into the sediments, L. luymesi stimulates the growth of sulfide-producing microbes, and ensures its own long-term survival. The sulfide this worm needs is created by a consortium of bacteria and archaea that live in the deep sea cold sediments surrounding the seep where the worm lives. These chemoauto...

Bacteria collection sheds light on urinary tract infections

...ministering subtherapeutic doses of antibiotics as growth promoters in animals. E.coli is common bacteria found in humans and animals. Thousands of E.coli live in the organs of humans and animals and provide multiple benefits such as aiding in digestion of certain nutrients. However, E.coli is also commonl...

U-M scientist to talk about tissue engineering at AAAS

...e to breaking. Parathyroid hormone stimulates bone growth in these patients, and Krebsbach sees potential to use it for similar gains in tissue engineering new bone. Bone morphogenetic proteins help cells differentiate into specific kinds of bone, and encouraging cells to make more BMPs during tissue engin...

Cytoplasm affects the number of vertebrae in carp-goldfish clones

...tributions of the nucleus and egg cytoplasm to the growth and development of vertebrates. ...

Leukemia Drug Breakthrough Study In New England Journal Of Medicine

...n in pill form, Revlimid simultaneously blocks the growth of new blood vessels that nourish tumors (anti-ang...aboratory observations that the agent improved the growth of red blood cell precursors from MDS bone marrow. Celgene will submit the seminal findings of List'...

Clam embryo study shows pollutant mixture adversely affects nerve cell development

...onents can work together to adverselyaffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of EnvironmentalToxicology and Pharmacology, is the first step toward understanding howexposure to BCE might affect human nerve cell development--knowledgethat may one day pro...

Study identifies predictors of HIV drug resistance in patients beginning triple therapy

...onents can work together to adverselyaffect neuron growth in a model organism.The study, which is reported in the January 2005 issue of EnvironmentalToxicology and Pharmacology, is the first step toward understanding howexposure to BCE might affect human nerve cell development--knowledgethat may one day pro...

Mouse brain tumors mimic those in human genetic disorder

... years in humans,the cells slowed down to the same growth speed as astrocytes in controlmice."The fact that cell growth is dramatically reduced after a few monthsin mice and after a few years in humans tells us there may...

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