Look at specific human break through
from animal experiments, do these justify experiments now?
Insofar as we can generalize
from these animal experiments to humans, they provide a potential rationale for using low - protein diets to treat cancer patients, and raise the important clinical question of how to best maintain proper detoxification in these patients.
The guidelines have been developed by the NC3Rs to improve standards of reporting and ensure that the data
from animal experiments can be fully evaluated and utilised.
«It is indeed a remarkable finding that is consistent what with what one would have expected from prior findings
from animal experiments,» said lead author Jie Li, a Brown postdoctoral fellow.
Yet much of the evidence cited by smart drug enthusiasts comes
from animal experiments which can, by virtue of their design, test only a drug's effect on learning, not recall.
Based on the amounts being found in people and what is known about the metabolism of bisphenol A
from animal experiments, it also appears that human exposures are above the current U.S. safety limit, according to the assessment.
Not exact matches
He has achieved fame by
experiments in which, after removing the amygdalae
from the brains of cats, he observed that the cats veered «helplessly
from one inappropriate affect to another, boredom where there should be fear... sexual arousal where there was nothing that would stimulate an intact
animal.»
Then in 1961 Stanley Jacob, a University of Oregon Health Sciences Center surgeon looking for a way to supercool
animal organs for transplant
experiments, learned of DMSO
from Robert Herschler, a chemist employed by the Crown Zellerbach paper company.
This printed eyelash scarf (currently on sale for $ 29.50)
from J. Crew Factory is available in several bold prints; the sweet hyacinth (shown) is a fun option is you want to
experiment with
animal prints.
Much of what we know about how
animals change appearance during domestication comes
from a famous
experiment in Siberia in the 1950s.
Insights
from experiments on
animals are often difficult to apply to humans, Hartung, of Johns Hopkins University, said in a news briefing February 12.
Among other things, the law requires facilities to win approval for
animal experiments from the Committee for the Purpose of Control and Supervision of Experiments
experiments from the Committee for the Purpose of Control and Supervision of
Experiments Experiments on
Animals.
In another
animal microbiome
experiment, Jeffrey Gordon, a biologist at Washington University in St. Louis, took a suite of microbes
from the guts of both obese and lean mice and transplanted them into the guts of microbe - free mice.
And instead of surmising the
animals» thinking
from field observations or working with a single trained subject, she conducted repeatable laboratory
experiments, carefully designed to rule out alternative interpretations, with multiple birds whose history was uncorrupted by previous work.
One of the earliest compelling studies to suggest a relationship between diabetes and air pollution was an
animal experiment published in 2009 in Circulation
from researchers at Ohio State University and other institutions.
They are part of a long - running biological
experiment to repeat domestication by turning a wild canid —
from the family of
animals including wolves, foxes, jackals and dogs — into a fox version of a domestic dog (SN: 5/13/17, p. 29).
In a final
experiment, the group gave the
animals a compound that prevented LPA
from binding to its receptor on mouse brain cells, right before they were injected with hydrocephalus - inducing LPA.
But it wasn't clear
from mouse
experiments if the SCN was responsible for this resistance to strong temperature changes in living
animals.
Nevertheless, there remain many gaps in scientists» understanding of the effects of blasts on the human brain; most new knowledge has come
from experiments with
animals.
Complex phenomena — which we have so far only been able to study in live
animals - can now be investigated in simple laboratory
experiments using cultivated cells,» says postdoc Hans Christian Cederberg Helms
from the Department of Pharmacy.
Collins said that because Hydra is such a simple
animal and because it is able to regenerate after complete dissociation into individual cells, it offers researchers the opportunity to use similar techniques as the ones employed in their
experiments to examine how an organism develops
from an unstructured group of cells into a complex body plan.
The evidence that oxygen radicals were beneficial came
from experiments in which researchers gave
animals an antioxidant called N - acetyl cysteine.
Experiments demonstrated that, even after being stored at 40ºC for 6 months, their rabies vaccine protected
animals from viral infection.
She needed a farm to host an audacious
experiment dreamed up by geneticist Dmitry Belyaev: to create a domestic
animal as docile as a dog
from aggressive, wily silver foxes.
Using clinical, genetic, and gene expression data as filters to distinguish genes whose copy number alteration causes cancer
from those for whom copy number changes are incidental, the team whittled down their list
from 14,000 to a more manageable number, each of which they systematically tested using genetic
experiments in
animals.
The case is in keeping with the recent European trend of increasingly stringent regulations for
animal research; most notably, a September 2007 petition in the European Parliament to end all nonhuman primate
experiments gained support
from more than half of its members.
In
experiments with mice, the researchers calculated a seventyfold drop in the amount of Sema3D secreted
from mouse pancreatic cancer cells in
animals that lacked annexin A2.
This perfectly preserved frondlet
from the Ediacaran period 565 million years ago was an early
experiment in
animal life that never evolved into another stage.
The loss was bad for the vaccine: In a series of
experiments Hensley and his colleagues showed antibodies
from humans and ferrets (a good
animal model for influenza A studies) that had been exposed to the egg - grown vaccine did not effectively kill the circulating sugar - adorned viruses.
The results indicate that the highest number of new hippocampal neurons was observed in rats that ran long distances and that also had a genetic predisposition to benefit
from aerobic exercise: Compared to sedentary
animals, HRT rats that ran voluntarily on a running wheel had 2 - 3 times more new hippocampal neurons at the end of the
experiment.
In order to identify and avoid possible risks that could arise
from vaccination against AIDS, it is essential to carefully plan and execute
animal experiments in pre-clinical studies.
«A drug produced
from scratch needs to be proven both safe and effective before the FDA will permit its use, and that is a painstaking and expensive process requiring extensive
animal experiments,» Hanauske - Abel says.
For the
animal experiments, Savio Woo of the Center for Gene Therapy at Baylor College of Medicine in Houston and his colleagues first isolated liver cells
from transgenic mice that produce the human protein a1 - antitrypsin in their livers,
from where it is secreted into the blood.
In
experiments on monkeys, they combined an antibody to OX40 with the drug rapamycin, which slows production of IL - 2, and saw «total control» of GVHD: Five of five
animals had no signs of the disease 100 days after a graft
from a highly mismatched donor.
A cheap and simple test that identifies skin irritants in cosmetics and drugs could save thousands of
animals from a life of suffering in laboratory
experiments.
As we learn in Escape
from the Planet of the Apes (1971), the third installment of the series, Dr. Zira vivisected and
experimented on human captives, who in the movie year of 3955 are considered
animals and thus expendable in the pursuit of scientific knowledge.
Findings may be having a profound impact on everything
from animal behavior
experiments to human clinical trials
What is emerging
from this work is a fascinating possible scenario for the humble beginnings of the mighty
animal kingdom: A few thousand spore cells in the ocean, poised to scatter like dandelion seeds, may have decided to stick together and continue their
experiment in group living for a little while longer.
Accepting space and time as forms of
animal sense perception (that is, as biological), rather than as external physical objects, offers a new way of understanding everything
from the microworld (for instance, the reason for strange results in the two - slit
experiment) to the forces, constants, and laws that shape the universe.
The drones the duo have been
experimenting with can hear the bats
from around 20 metres away, so they aren't thought to pose any danger to the
animals.
Experiments performed by coauthor Mireia Uribe - Herranz, PhD, a research associate in Facciabene's lab, demonstrate that when ACT was performed on genetically identical
animals obtained
from different vendors (Jackson Laboratory or Harlan Laboratories), which carry different microbiota, impact of the therapy was not identical.
Recommendations aimed at reducing the incidence of cancers associated with nutrition are based on limited but suggestive evidence
from epidemiological studies and
animal experiments
In
experiments in
animals, researchers
from the University of Michigan Medical School showed that adding rapamycin to an immunotherapy approach strengthened the immune response against brain tumor cells.
«We had some indication that rapamycin would enhance the cytotoxic T cell effect,
from previous
experiments in both
animals and humans showing that the drug produced modest effects by itself,» says Maria Castro, Ph.D., senior author of the new paper.
In
experiments in mice, the researchers found that the activity of Sst interneurons changes when the
animal goes
from not moving its whiskers (in a resting state) to moving them (in an active state), a process known as whisking.
In an
experiment aimed to uncover how concepts are represented in the brain, 29 participants, ages 18 - 28, first viewed several novel cartoon
animals as examples
from two different concept categories whose members were related to families called Romeo or Juliet.
A second
experiment showed that the drugs - plus - DNA therapy reduced bacterial growth
from a secondary infection, and in one of seven
animals, it gave «complete protection» to the lungs against reinfection.
«What's particularly noteworthy about this work is we were able to present an integrative link
from genetics, cell - and
animal - based
experiments, all the way up to clinical outcomes in large human population,» Liu said.
The immunological benefits
from the wild mice's gut bacteria may, in part, explain a persistent problem in disease research: Why disease
experiments in lab mice, such as vaccine studies, turn out very differently in humans or other
animals.
In the
experiments with F66 transgenic mice, a consistent finding was that muscle weights were higher in
animals of the same genotype if they arose
from crosses in which the mother had fewer functional Mstn alleles (Table 1).