Huffman hoped to understand how THC and related compounds interact
with brain receptors and perhaps find treatments for nausea and glaucoma.
Not exact matches
Our
brains are loaded
with receptors for capsaicin, and we respond to it by releasing endorphins, natural compounds that have a calming effect.
Not to mention that our
brains have cannabinoid
receptors that we are born
with and they become active and our bodies release natural pain relief during natural childbirth, and natural childbirth only.
Epigenetic regulation of the glucocorticoid
receptor in human
brain associates
with childhood abuse
Scientists at Duke Health who developed the new model also discovered that targeting a
brain receptor in mice
with this type of autism could ease repetitive behaviors and improve learning in some animals.
One of your biggest discoveries was how addiction affects the D2
receptor, the protein that determines how sensitive individuals are to the release of the neurotransmitter dopamine, a chemical in the
brain associated
with feelings of reward and pleasure.
«These effects were reduced, however, in terms of both intensity and duration, if the mice had been treated
with a kappa - opioid
receptor antagonist, a drug that blocks the activity of one of the
brain's own opioid systems.»
And so we found a variant in one of the GABA
receptors [that] is associated
with alcoholism, and this fits in
with some of the
brain wave pattern activity that it looks like alcoholism [and] is linked to disinhibition, so [it's] a problem
with the inhibition of
brain waves that people should generally have.
They found that elevated anxious temperament is associated
with decreased messenger RNA expression of two neuropeptide Y
receptors, Y1R and Y5R, in the central nucleus of the amygdala, a region of the
brain that plays an important role in regulating fear and anxiety.
The neurons send their signals to the
brain's olfactory bulb, where each of thousands of little clusters of neurons called glomeruli receives input from olfactory neurons
with just one
receptor type.
A new report in the current issue of Biological Psychiatry by researchers at the University of Wisconsin at Madison suggests that deficits in one of the
brain's off switches for anxiety, neuropeptide Y
receptors, are decreased in association
with anxious temperament.
Conditions that cause the
brain's
receptors to stop functioning properly are often mistaken for schizophrenia or bipolar disorder because these diseases are associated
with a decrease in activity of the NMDA
receptors, which control how someone thinks, makes decisions, and perceives the world around them.
Perhaps most significantly, in a study led by Frances Champagne — then a graduate student in Meaney's lab, now an associate professor
with her own lab at Columbia University in New York — they found that inattentive mothering in rodents causes methylation of the genes for estrogen
receptors in the
brain.
This pruning changes the relative density of
receptors in the circuit linking the area of the
brain involved
with processing rewards (the basal ganglia) and the area of the
brain implicated in inhibition and control (the prefrontal cortex).
To find evidence for the phenomenon, her team began looking for MHCI
receptors in the
brain — literally, molecules that would connect
with MHCI to help get the message through.
Despite all of these negative effects they have very little benefit in improving psychosis in people
with dementia Pimavanserin works differently to other antipsychotics, by blocking a very specific nerve
receptor (THT2A) in the
brain.
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.
When THC strikes specific cannabinoid
receptors, it triggers domino chains of interacting molecules in neurons that culminate in both unusually elevated and abnormally low levels of various neurotransmitters (the molecules that
brain cells use to communicate
with one another).
The participants were injected
with a radioactive compound which binds to their
brain's opioid
receptors.
Now researchers report that they have sorted out how the drug toys
with nicotine
receptors in the
brain.
«
Brain genes related to innovation revealed in birds: Glutamate brain receptors, linked with human intelligence, are also associated with problem - solving skills in wild birds.&r
Brain genes related to innovation revealed in birds: Glutamate
brain receptors, linked with human intelligence, are also associated with problem - solving skills in wild birds.&r
brain receptors, linked
with human intelligence, are also associated
with problem - solving skills in wild birds.»
This illustration shows how the rabies virus inhibits nicotinic
receptors in the
brain, which interferes
with communication and induces frenzied behavior.
Indeed, by examining
brain tissue and slices from the cocaine - addicted rats at various stages of withdrawal and craving, Wolf and her colleagues discovered that the incubation period and the subsequent spike in craving appeared to correlate
with the appearance of atypical AMPA
receptors on the surface of neurons in the NAc, which could help explain cocaine craving.
Maged Harraz, Ph.D., a research associate and the first author of the newly published research paper, says the researchers already knew that ketamine interacts
with excitatory NMDA
receptors on nerve cells in the
brain to block their activity.
These compounds block the neurotransmitter acetylcholine from interacting
with its
receptors in the
brain.
Autism - linked protein SHANK3 (red) and pain
receptor TRPV1 (green) interact
with one another in sensory neurons outside of the
brain.
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.
Anandamide is among a class of naturally occurring chemicals in the body known as endocannabinoids that attach to the same
brain cell
receptors as does marijuana's active ingredient, THC,
with similar outcomes.
«The
brain along
with the reproductive system and every other cell in your body is exquisitely sensitive to exceedingly small changes in estrogen and other sex hormones, and the fact that the environment is full of chemicals that can activate estrogen
receptors means this phenomenally sensitive system is being perturbed constantly by environmental factors.»
«Our research shows that targeting cannabinoid
receptors in the periphery
with pharmacological inhibitors that do not reach the
brain holds promise as a safe therapeutic approach for the treatment of overeating and diet - induced obesity,» said Nicholas V. DiPatrizio, an assistant professor of biomedical sciences in the School of Medicine, who led the research project.
At the same time, the obese girls sipping milk shakes showed decreased activation in the striatum, a region near the center of the
brain that is studded
with dopamine
receptors and known to respond to stimuli associated
with rewards.
The
brain can't actually feel pain despite its billions of neurons, Godwin said, but the pain associated
with brain freeze is sensed by
receptors in the outer covering of the
brain called the meninges, where the two arteries meet.
Biochemical tests of the adult animals showed that THC - doused
brains had the same number of
receptors that responded to THC as unexposed rat
brains, but more
receptors for heroin and more of a compound associated
with reward behavior in their neurons, the team reports online 5 July in Neuropsychopharmacology.
Many researchers are also hopeful about clinical trials under way
with drugs that block certain
receptors for glutamate, the main neurotransmitter in the
brain that excites neural activity.
This unexpected result fits
with previous work showing that E and Z males have different connections between the neurons harboring pheromone
receptors and the
brain.
In 2010 biologist Valerie Hu of the George Washington University Medical Center and her colleagues found that
brains of people
with autism have low levels of a protein produced by a gene called retinoic acid — related orphan
receptor - alpha (RORA).
The participants were injected
with radioactive compounds that bind to their
brain's opioid and dopamine
receptors.
The group employed various viral tracing methods — infecting
receptor - expressing neurons
with a virus strain and watching them spread as they label infected cells
with a fluorescent protein — to visualize the neural circuit downstream of the ESP1
receptor, as well as providing an image of nerve fibers belonging to specific neurons in the
brain and synapses relaying impulses from neuron to neuron, to map the anatomical foundation that conveys ESP1 signals in the
brain.
Think of
brain cells as rooms
with locks called
receptors on their surfaces and a hypocretin as a key that is also a stimulant.
In a final experiment, when the researchers gave the bees a drug that disrupted
receptors for dopamine, a neurotransmitter linked
with motivation and reward, the bias disappeared, echoing the way this
brain chemical works in mammals.
Mansuy says the behavioral changes were associated
with an increased level of the glucocorticoid
receptor in the hippocampus — the part of the
brain that contributes to stress responses.
The scientists used imaging techniques to visualize the activity in certain areas of the flies»
brains while these were stimulated
with different odours, and they were able to localize and identify the
receptor for citrus.
Given via injection or nasal spray, naloxone binds powerfully
with opiate
receptors in the
brain, repelling the drugs the user has taken and sending him or her into an instant and painful withdrawal.
Receptors facilitate chemical and electrical signals between neurons in the
brain, allowing those neurons to communicate
with each other.
Key to the researchers» efforts to track oxytocin at work in individual
brain cells was use of an antibody developed at NYU Langone that specifically binds to oxytocin -
receptor proteins on each neuron, allowing the cells to be seen
with a microscope.
Researchers
with Oregon Health & Science University's Vollum Institute have given science a new and unprecedented 3 - D view of one of the most important
receptors in the
brain — a
receptor that allows us to learn and remember, and whose dysfunction is involved in a wide range of neurological diseases and conditions, including Alzheimer's, Parkinson's, schizophrenia and depression.
Numerous experiments
with genetically altered mice and rats have shown that when natural
brain compounds, called endocannabinoids, are missing or their
receptors are blocked, the animals are more susceptible to pain, can not control their appetites, have trouble handling anxiety and are less able to cope
with stress.
He examines several well - studied
receptors — the bacterial aspartate
receptor (Tar), human epidermal growth factor
receptor (EGFR), and human
brain - derived neurotrophin
receptor (BDNFR)-- and comes to a conclusion that they all have similar chemical structures
with or without their corresponding ligands.
Four cloned cDNAs encoding 900 - amino acid putative glutamate
receptors with approximately 70 percent sequence identity were isolated from a rat
brain cDNA library.
Researchers have long suspected that a
brain receptor called TrkB was involved
with the growth of spines when we learn, but the new study confirms that the
receptor is indeed crucial and delves further into how it works.