Not exact matches
Studies have found that the additive increases risk of certain types of cancer in
mice and the International Agency for Research on Cancer classifies byproduct 4 - Mel
as «possibly carcinogenic to
humans.»
a comment for you, a ufo picture who the fbi acredired
as a real.pedrfo castillo who was teh one that sent me that noticie, i just did no much
as put my
mouse on that such an ufo,
and sudendly something so i called part of
human appeard.
The study found that
mice with peanut allergies developed similar symptoms
as humans, notably itchy skin
and breathing issues.
Hassles such
as buying paper towels or searching for the perfect used car that used to require legwork,
human interaction,
and possibly even wearing pants can now be done with a click of a
mouse from one's own living room.
As part of the study, researchers found that
mice engineered to develop symptoms of
human inflammatory disease,
and which also lacked the ATG16L1 gene, developed gut damage.
Compared with
mice with cells from healthy people
as well
as non-chimera
mice, those whose brains had
human schizophrenia cells were more afraid to explore a maze, more anxious, more antisocial, less able to feel pleasure (from sipping sugar water), worse at remembering,
and more sleepless — all of which characterize people with schizophrenia, too.
«We don't know if the observed reversibility of the disease symptoms
as observed in the
mouse,» he says, «exists in
humans who have a much longer period of pre -
and post-natal brain development than
mice — months
and years in
humans, weeks in
mice.»
The
mice behaved just like others of their kind,
as far
as scientists could tell,
and they also looked the same — except for the
human mini brain that had been implanted into each rodent's own cortex, made visible by a little clear cover replacing part of their skull.
To better understand their findings, the team examined the animal model for APS1 (i.e.
mice with the same genetic defect
as human patients with the syndrome)
and found that male
mice spontaneously developed an inflammatory disease in their prostate glands — a so - called prostatitis —
and reacted to transglutaminase 4.
The behavioral tests used here modeled one dimension of the disease — an inability to experience pleasure from normal activities — but not others, such
as stress
and anxiety,
and probably tap into different brain mechanisms in
mice than in
humans, he says.
The system is effective in both
mouse and human cells
as well
as in
mouse embryos.
Using the modified system,
human melanoma
and breast cancers
as well
as mouse melanoma cells were diagnosed with greater ease
and efficiency.
The researchers have compared various processes involved in gene expression, such
as gene transcription
and chromatin modification,
and have repeated this in different tissues
and cell types from both
humans and mice.
By combining the pieces in one way or another, we would obtain very different circuits (
as happens between
mice and humans) although the basic mechanisms governing the operation are based on the same methods
and available resources.
He thinks the hormone might also boost fertility in men,
as many hormones have been found to have the same effects in
mice and humans.
An unknown component of breast milk appears to kill HIV particles
and virus - infected cells,
as well
as blocking HIV transmission in
mice with a
human immune system.
Several studies have supported a role for cancer stem cells in the aggressive brain tumors called glioblastoma, but those studies involved inducing
human tumors to grow in
mice,
and as such their relevance to cancer in
humans has been questioned.
While
mouse models have traditionally been used in studying the genetic disorder, Deng said the animal model is inadequate because the
human brain is more complicated,
and much of that complexity arises from astroglia cells, the star - shaped cells that play an important role in the physical structure of the brain
as well
as in the transmission of nerve impulses.
Then they compared the results with the genetically modified
mice,
as well with healthy
humans and mice.
They found that blocking ANGPTL3 activity with an investigative injectable antibody, known
as evinacumab, reduced triglycerides by up to 76 percent
and lowered LDL cholesterol 23 percent in
human study participants,
and largely reversed signs of atherosclerosis in a
mouse models.
As reported in a paper published online in the New England Journal of Medicine, researchers from Penn Medicine, Regeneron Pharmaceuticals,
and a group of international collaborators studied ANGPTL3 in both
humans and mice.
BO plays a role in mate selection among
mice,
and some experiments have suggested its importance for
human mate selection
as well (ScienceNOW, 18 June 2004).
«But I also came with the veterinarian perspective,
and as I talked to people, I realized there was an opportunity to answer questions in dogs with cancer that can't be answered in either
humans or
mice.
The LPA receptor is expressed in the brain of
human fetuses, just
as in
mice,
and in the same types of neural progenitor cells.
Unlike rodent models, which are developed from inbred strains of
mice kept in controlled environments, companion animals, like
humans, are genetically diverse
and are exposed to many of the same environmental influences
as their owners are.
All animals use the same enzyme to create the same methylation mark
as a signal for gene repression,
and her colleagues who study epigenetics in
mice and humans are excited about the new findings, Strome said.
Transplanted into a
mouse, the
human liver buds, about 5 millimeters long, exhibited many functions of the mature organ, such
as metabolizing sugars
and drugs.
Using a
mouse model of HSV - 1
as well
as autopsied samples of
human adult
and fetal tissues, investigators from Dartmouth College's Geisel School of Medicine found that antibodies against HSV - 1 produced by adult women or female
mice could travel to the nervous systems of their yet unborn babies, preventing the development
and spread of infection during birth.
«For example, cancer research is heavily reliant on
mouse models,
and as a result we've become very good at curing
mice, but that hasn't translated very well to
humans.
In a paper publishing August 7th in the Open Access journal PLOS Biology, researchers at the Max Planck Institute of Molecular Cell Biology
and Genetics (MPI - CBG) succeeded in mimicking the sustained expression of the transcription factor Pax6
as seen in the developing
human brain, in
mouse cortical progenitor cells.
Microbeads coated in a
human egg protein work
as a contraceptive in
mice and could also be used to select the best sperm for IVF
«In
mice it's mostly about temperament, whereas in
humans it relies on factors such
as education, wealth
and heritage,» she says.
But
as they push forward with the scientifically challenging transition from
mice to monkeys
and humans, they are setting the course for the future of infertility treatments —
and perhaps even bolder experiments in reproduction.
They injected the particles directly into
mice with an experimental
human brain cancer,
and into the brains of healthy
mice for use
as comparison.
However, if a softer noise (known
as a prepulse) is played before the loud tone,
mice and humans are «primed»
and startle less at the second, louder noise.
Scientists, with practice, have now been able to make nuclear transfer nearly routine to produce cattle, cats,
mice, sheep, goats, pigs,
and —
as a Korean team announced in May — even
human embryonic stem (ES) cells.
The group has already started tweaking
human iPS cells using the same genes that Saitou pinpointed
as being important in
mouse germ - cell development, but both Saitou
and Hayashi know that
human signalling networks are different from those in
mice.
«In complex organisms, such
as fruit flies,
mice,
and humans, scientists have only been able to infer how these enzymes mechanistically accomplish their tasks,» said Daniel McKay, PhD, assistant professor of genetics
and biology
and first author of the paper.
The problem is that in animals, such
as mice and humans, there are many histone genes
and they are scattered throughout the genome.
By pairing a receptor that targets neurons with a molecule that degrades the main component of Alzheimer's plaques, the biologists were able to substantially dissolve these plaques in
mice brains
and human brain tissue, offering a potential mechanism for treating the debilitating disease,
as well
as other conditions that involve either the brain or the eyes.
The researchers then introduced the two strains into
mice transplanted with a
human immune system
and watched in real time
as HIV spread from one CD4 + helper T cell to another.
They found evidence of Del - 1 in the same areas
as osteoclast activity, then followed up by generating
human and mouse osteoclasts in vitro
and found Del - 1 mRNA
and protein expressed at high levels.
This is because the tumors in
mice mirror the genetics
as well
as the molecular
and cellular properties of tumors in
humans.
The result, says Flajolet, is a brain that is hard
and transparent, almost «like glass,» which allowed the researchers to see the amyloid plaques in full detail
and in 3D, in a full
mouse brain hemisphere,
as well
as in small blocks of
human brain tissue.
Enormous projects such
as ENCODE (for
humans and mice) or modENCODE (for other lab model systems, such
as the fly Drosophila or the worm C. elegans) have been devoted to collecting these data in order to analyse
and interpret them in the framework of genomic data
and to form hypotheses about functions
and relations.
Like all mammals, including
humans,
mice lose up to a third of their muscle mass
and power
as they get older.
Buxbaum
and his coworkers point out that FOXP2 is also expressed in the brains of songbirds such
as finches
and canaries,
and further studies of the gene in
mice might provide a better understanding of its role in
human communication.
«Those findings also suggest that FGF21 is regulated the same way in
humans as in
mice and that the process involves the expression
and activation of certain proteins in the brain.»
Just
as the technique restored kidney, muscle,
and insulin - producing function in the
mouse models, he sees a future for rejuvenating neuronal populations, maybe even one day in
human patients.
as being highly expressed in the inflamed intestine of
mice and humans.