Hungry
mice produce more of the protein encoded by the SIRT1 gene, the team reports in the 3 March Nature.
The reason for this response, Gordon says, was twofold: Firmicutes bacteria transplanted from the fat
mice produced more of the enzymes that helped the animals extract more energy from their food, and the bacteria also manipulated the genes of the normal mice in ways that triggered the storage of fat rather than its breakdown for energy.
Not exact matches
Despite the presumed virulence
of the strain — experiments with
mouse lungs showed it
produces 1000 times
more bacteria in infected cells than do standard varieties — Valway says the number
of TB cases that developed were kept in line with other typical outbreaks, which «shows that doing good contact investigations is important and preventative therapy works.»
Fiona Mathews
of the University
of Exeter, UK, who led the study, says the findings echo those in animals, which are also
more likely to
produce boys during times
of plenty, whereas female
mice with low blood sugar also seem
more prone to
producing girls.
Six pairs
of mice — with one
mouse engineered to
produce gobs
of human A-beta and one normal — were surgically joined for a year, causing blood mingling that's far
more extensive than that
of a blood transfusion.
Indeed, the researchers found that
mice fed the drug
produced more ABC1, they report in the 1 September issue
of Science.
Cutting calories from the diets
of mice, fruit flies, nematode worms and yeast led all
of the organisms to
produce more hydrogen sulfide, Mitchell and colleagues found.
Mice that were genetically engineered to
produce higher - than - average amounts
of the microRNA were
more resistant to constant stress: They did not develop any
of the behaviors associated with chronic stress, such as anxiety or depression, which would normally appear.
In 2009, they observed that these «humanized»
mice produced more frequent and complex alarm calls, suggesting the human mutations may have been involved in the evolution
of more complex speech.
In humans, as in
mice, fat cells
of the obese already
produced plenty
of leptin —
more in fact than those
of their thin counterparts, since the level
of leptin was directly proportional to the amount
of fat.
«By identifying the signals that instruct
mouse progenitor cells to become cells that make tubes and later insulin -
producing beta cells, we can transfer this knowledge to human stem cells to
more robustly make beta cells, says Professor and Head
of Department Henrik Semb from the Novo Nordisk Foundation Center for Stem Cell Biology at the Faculty
of Health and Medical Sciences.
The researchers tested two anti-CK2 drugs for their ability to stimulate the production
of new brown fat in
mice: a new small - molecule CK2 - blocker called silmitasertib (CX - 4945), which is already in clinical trials as a cancer therapeutic; and a
more precise next - generation antisense oligonucleotide (ASO) drug developed in collaboration with Isis Pharmaceuticals, which eliminates CK2 by blocking the RNA instructions cells use to
produce it.
The most intriguing mutant type
of mice were unusually thin; they generated
more active osteocalcin, secreted
more insulin, and
produced many times
more of the insulin - releasing cells in the pancreas.
Photoswitches inserted into retinal ganglion cells (RGC)
of blind
mice produce much less variety
of response (all evenly red means the cells fire at the same time), while blind
mice with photoswitches inserted into bipolar cells (ON - BC driven) exhibit much
more variety in their retinal response to light, closer to that
of normal
mice.
Using
mice, this study found that in obesity, CB1 cannabinoid receptors become enriched on the nerve terminals that normally inhibit orexin neuron activity, and the orexin neurons
produce more of the endocannabinoids to activate these receptors.
Their answer, garnered through a series
of electrophysiology, dendritic spine density and immunohistochemistry experiments with
mice that were genetically altered to
produce either
more new neurons or kill off newborn neurons, supports the second model — some
of the cortical neurons transfer their connections from mature granule cells to the new granule cells.
The full
mouse connectome would
produce hundreds
of times
more data than can be found on all
of Google's computers, says Jeffrey Lichtman, the neuroanatomist leading the Harvard team.
«In our
mouse experiments, olive oil
produced essentially identical effects as Plenish —
more obesity than coconut oil, although less than conventional soybean oil — and very fatty livers, which was surprising as olive oil is typically considered to be the healthiest
of all the vegetable oils,» said Poonamjot Deol, an assistant project scientist working in Sladek's lab and the co-first author
of the research paper.
So when Drake and his colleagues measured the RNA levels — a direct link to how much
of a gene is being
produced — in the genes
of 334
mice, he didn't expect to find
more than a few variations that might help explain why males and females have such different rates
of cardiovascular disease and diabetes or why they react differently to certain drugs.
The team found lower levels
of TRNP1 in areas that were destined to form folds, and higher levels in areas that would not have developed them, suggesting that the protein
produced by the gene inhibits
more complex brain development in humans as well as in
mice.
In addition, substances called growth factors,
produced naturally in the brain, were
more abundant in key regions on both sides
of the brain in optogenetically stimulated, stroke - affected
mice than in their unstimulated counterparts.
In studies
of neural development in
mice, Stahl found that TRNP1
produces a protein that determines whether neural stem cells self - replicate, leading to a balloonlike expansion
of cortical surface area, or whether they differentiate into a plethora
of intermediate stem cell types and neurons, thickening the cortex and forming
more complex brain structures.
When the total number
of wheel revolutions was quantified during the 14 - hour data collection period, IL - 15Rα — KO
mice produced 15,090 wheel revolutions (equivalent to 5.4 km), 6.3-fold
more than the B6129 control
mice (Figure 3B).
Similarly, we observed that male IL - 15Rα — KO
mice produced 6.3-fold
more wheel revolutions compared with B1629 control
mice in cage wheel running experiments and had a larger number
of ambulatory photobeam breaks in the light and dark cycles.
Multiple
mouse models
of SMA have been
produced, generally by knocking out the endogenous
mouse SMN1 gene and replacing it with one or
more copies
of the human SMN2 gene that
produces much less full - length SMN protein than the SMN1 gene.
Reduction
of htt to 50 % endogenous levels
produces viable
mice with no overt phenotypes (Duyao et al., 1995; Zeitlin et al., 1995) however
more detailed evaluation has revealed deficits in cognition and motor behavior (Nasir et al., 1995) raising the possibility that lowered htt starting in development may have adverse effects in the
mouse.
However, unlike the
mouse, the zebrafish is smaller and can
produce more offspring in a shorter time (200 eggs per week compared to a
mouse litter
of 15 pups in 21 days).
Researchers comparing normal and obese
mice found that obese
mice produced more than twice as much
of a small microRNA molecule called microRNA - 143 in their liversANCHOR.
We hypothesized that this would be sufficient to
produce stable increases in progranulin levels in the hippocampus
of Grn + / −
mice, but were also interested in whether progranulin might be increased in
more FTD - relevant regions, such as the frontal cortex.
DartMouse ™ offers clients a marker - assisted congenic breeding strategy to
produce congenic
mice with > 99 % recipient strain genetic purity in half the time (5 generations; 1.25 - 1.5 years) instead
of the
more practiced 10 - 20 generations, which can take greater than 5 years.
The extract caused the
mice's muscle cells to
produce more of pretty much all the proteins that make the insulin receptor work — from the IR insulin receptor to GLUT4 transport protein to insulin - receptor substrate to Akt.
in 2016, genetically identical
mice that consumed a high - fat diet were
more likely to
produce obese offspring with impaired glucose tolerance, an early sign
of type 2 diabetes.
More specifically, addition
of the PI3K inhibitor LY294002 to the growth medium
of mouse muscle cells
produces enhanced nuclear localization
of FOXO1 and increased MAFbx mRNA transcription (52, 53).
Principal Translations / Traduzioni principali: Inglese: Italiano:
mouse, plural:
mice n noun: Refers to person, place, thing, quality, etc. (small rodent) Young may refer to: Offspring, the product
of reproduction
of a new organism
produced by one or
more parents; Youth, the time
of life when one is young
Cat toy companies keep this in mind when
producing their products such as toy
mice, birds, butterflies and other «prey» on...
MORE pole toys, and «chase» toys, such as laser toys to chase a beam
of light.
A 2 week course is
more than sufficient, especially these days when all the forms, data and real estate clauses are computer
produced by the click
of a
mouse.