Tag: "cells" at biology news
New molecular regulators of hyperthyroidism and goiter
...king the alpha-subunits of both Gq and G11 only in cells
of the thyroid gland. These mice had reduced thyroid gland function and many had symptoms similar to individuals with hypothyroidism. In addition, the thyroid gland in these mice was unresponsive to the proliferative effects of TSH and a goitrogenic ...
A unique arrangement for egg cell division
...hat is responsible for chromosome reduction of egg cells
in mice. In the current issue of Cell they report ...h is very different from what happens in all other cells
in the body. The process is likely conserved across species and the new insights might help shed lig...
JCI table of contents: Aug. 9, 2007
...king the alpha-subunits of both Gq and G11 only in cells
of the thyroid gland. These mice had reduced thyro... region. It is characterized by loss of the muscle cells
of the heart (cardiomyocytes). Although this loss is generally considered to occur mostly through a ...
New test improves detection of liver cancer
... group of liver diseases in which the normal liver cells
become damaged and are replaced by scar tissue. This reduces the amount of healthy liver tissue, and the accumulation of scar tissue disrupts the development and functioning of this complex organ. Cirrhosis of the liver has various causes, including:...
Brain blood flow gives clues to treating depression
... imbalance in the brain that makes it hard for the cells
to communicate with one another. A variety of antidepressant medications and psychotherapies are used to treat depression. Sometimes electroconvulsive therapyapplying an electric current briefly to produce a seizureis useful, especially for those who...
Female gender provides an advantage in renal diseases
...roteins that contribute to kidney scarring) in the cells
located around the small blood vessels of the kidn...duces the production of collagen in these cultured cells
and may reduce scarring in renal disease. Looking Ahead: Raloxifene and Renal Disease Silbig...
Sugar and spice and everything nice: Health differences in newborn girls and boys
...drogen ions (H+) which can accumulate in the liver cells
during ischemia leading to detrimental affects. Thus, to better understand the gender effects of infant liver transplantation, the researchers examined anaerobic end-product accumulation in newborn male and female livers during no-flow ischemia. Ba...
Weizmann Institute scientists discover a control mechanism for metastasis
Metastasis when cancer cells
dissociate from the original tumor and migrate via...rate, it first must detach itself from neighboring cells
and the intercellular material to which it is anchored. Before it can do this, it receives an order ...
News tips from the Journal of Neuroscience
...he authors expressed mutant variants in chromaffin cells
from Munc18 null mice and used uncaging of calcium to trigger release of primed vesicles. Expression of the NV mutation that prevents binding to closed syntaxin1 reduced vesicle docking. However, Munc18-1 NV rescued release, albeit to a lesser extent...
Other highlights in the Aug. 7 JNCI
...that was recently identified in noncancerous liver cells
of liver cancer patients was a good predictor of w...milar gene expression pattern in noncancerous lung cells
could predict the prognosis of lung cancer patients. They found 11 genes in noncancerous lung tis...
High-intensity ultrasound may launch attack on cancer, wherever it lurks
...e form of ultrasound that shakes a tumor until its cells
start to leak can trigger an alarm that enlists im...d of the cancerous tissues. However, if the cancer cells
spread to other vital organs such as the lung or brain, the outcomes are often much worse. HIFU in...
Penn researchers discover how key protein stops inflammation
...nflammation by examining how Bcl-3-deficient mouse cells
respond to infection. Their studies revealed that Bcl-3 interacts with p50, a protein that inhibits gene transcription by binding to DNA. p50 turns off the DNA region coding for inflammation, halting the response to infection, explains Chen. Withou...
UCLA scientists produce functioning neurons from human embryonic stem cells
...CLA were able to produce from human embryonic stem cells
a highly pure, large quantity of functioning neuro...n able to produce neurons - the impulse-conducting cells
in the brain and spinal cord - from human embryonic stem cells. However, the percentage of neurons i...
UCF research links proteins, stem cells and potential Alzheimer's treatment
...ealth, combined a technique for transplanting stem cells
into rats and a newly discovered compound, phenser... brain. Six years ago, he reported that brain stem cells
transplanted into aged rats seemed to become functional neurons and improved age-associated memory l...
Anthrax bacterium's deadly secrets probed
...ts immune system, enabling the bacterium to infect cells
or survive in the bloodstream. Knowledge of a pathogenic bacteriums secreted proteins and how they function can therefore help with the search for treatments. As genes carry the code for proteins, researchers are able to use knowledge of a bacteriu...
Teamwork between 2 key proteins necessary for normal development and regulation of red blood cells
...F2 can turn on the embryonic globin genes in adult cells
we don't know if this is true yet - then these fi...aid. According to Lloyd, the production of blood cells
involves a complex differentiation pathway with interactions between many molecular players and prot...
UF, French scientists seek test to detect gene doping in athletes
...or example, the animals produced so many red blood cells
that their veins clogged, and many eventually died after developing massive allergic responses to the therapy. I think many athletes know of the technology. Theyre aware and theyre concerned. WADAs aware and concerned, Friedmann said. One can ove...
Not all embryonic stem cell lines are created equal
...hnique for producing functioning neurons from stem cells
that will be important for creating models of huma...thwestern Medical Center at Dallas. Embryonic stem cells
are developmentally immature cells
that are capable of self-renewal and of differentiating into any ...
In a first, Einstein scientists discover the dynamics of transcription in living mammalian cells
...ficial gene that they had inserted into one of the cells
chromosomes. Then, by attaching fluorescent tags to RNA polymerase II, they were able to closely monitor all three phases of the transcription process: binding of the enzyme molecules to DNA, initiation (when the enzyme links the first few RNA nucleo...
New mechanism links smoking to lung damage
...tress, such as exposure to cigarette smoke, damage cells
in the lungs. Toxins in cigarette smoke, they s...ittle provocation, turn into major breaches in the cells
integrity, leading to rapid cell death. This discovery by researchers from the University of Chic...
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