delaMonte: Therapeutic targets
of brain insulin resistance in sporadic Alzheimer's disease.
Moreover, it was found that the inactivation
of the brain insulin receptor caused increased food intake in female mice (266).
Not exact matches
Once glucose from the food you eat is absorbed into your bloodstream blood glucose levels go up and your pancreas starts secreting
insulin to help get that sugar out
of your bloodstream and into your
brain and muscles where it is needed (after all, it is not safe to have high blood sugar levels.)
Whenever a sweet substance touches the tongue, our
brains senses that this is food and it is time for our body to produce
insulin to take that food and bring it into our cells for the use
of energy.
This research noticed a strong correlation between
insulin resistance in the
brain and early Alzheimer's Disease, suggesting that Alzheimer's might be considered a neuroendocrine disorder
of the
brain or so - called «type 3 diabetes».
It Is a great source
of saturated fat which helps with cardiovascular health, weight loss, absorption
of calcium, liver health, nerve signaling (which helps with metabolism and
insulin release), supports the immune system,
brain and lungs!
These findings provide the first evidence
of a direct effect
of maternal metabolism on fetal
brain activity and suggest that central
insulin resistance may be programmed during fetal development.»
The consequences for the unborn child are also spelt out, with the authors saying: «The
insulin resistance
of the fetal
brain may be interpreted as metabolic imprinting
of insulin resistance with important consequences for later life.
Over the past 15 years, the GFP gene has enabled scientists to watch a plethora
of previously murky biological processes in action: how nerve cells develop in the
brain, how
insulin - producing beta cells form in the pancreas
of an embryo, how proteins are transported within cells, and how cancer cells metastasize through the body.
Pardridge and his colleagues wondered if they could slip therapeutic compounds into the
brain with the help
of insulin and transferrin, a molecule that moves iron from place to place; both
insulin and transferrin are granted free passage across the blood -
brain barrier.
The mutant gene, which is present in up to 20 %
of Caucasians and 50 %
of black people, binds to
insulin receptors in the body — mainly in the
brain and pancreas — and so prevents
insulin from binding there.
Another research group has shown in hamsters that
insulin resistance can affect the hippocampus, a part
of the
brain critical for learning and remembering facts and events.
«Both forms
of exercise improved the whole body's
insulin sensitivity equally efficiently and most likely, we would have seen a change also in the
brain's metabolism after moderate training if the exercise period would have been longer.
Researchers at the University
of Turku, Finland, studied how high - intensity interval training (HIIT) alters the
brain's glucose metabolism in physically inactive
insulin resistant people.
«MHCI levels are altered in the Alzheimer's
brain, and altering MHCI levels in mice disrupts memory, reduces synapse number and causes neuronal
insulin resistance, all
of which are core features
of Alzheimer's disease,» Boulanger said.
Such «couch - potato» animals develop a range
of health problems, including
insulin resistance, diabetes, high blood pressure, impaired
brain function, increased oxidative stress and inflammation.
The research team discovered leptin and
insulin interact with proopiomelanocortin (POMC) neurons in the
brain's hypothalamus, causing them to send signals through the nervous system promoting the conversion
of white fat into brown fat.
Researchers already knew that
insulin helps regulate dopamine, but previous research suggested that the effect might go the other way, with
insulin reducing the amount
of available dopamine in some
brain areas.
Insulin plays many roles in the
brain — it is involved in memory formation, and it helps to keep synapses free
of protein debris, including the tau tangles and amyloid plaques that build up in Alzheimer's, Craft says.
Mice lacking
insulin receptor in
brain or on hypothalamic neurons display an array
of metabolic abnormalities, however, the role
of insulin action on astrocytes and neurobehaviors remains less well - studied.
Here, we demonstrate that astrocytes are a direct
insulin target in the
brain and that knockout
of IR on astrocytes causes increased anxiety and depressive - like behaviors in mice.
Martins - Green and her team exposed mice to THS for up to six months, collecting
brain, liver, and serum samples after one, two, four, and six months
of exposure to test for hormonal alterations,
insulin resistance, metabolic syndrome, and damage to the liver and
brain.
A drug like metformin, [which is] an
insulin sensitizer in the body, may also be an
insulin sensitizer in the
brain,» said Dr. Richard Lipton, director
of the division
of cognitive aging and dementia at Montefiore Medical Center in New York City.
Treatment
of the mice with
insulin, either by normal injection or injection into the fluid surrounding the
brain, reversed the process.
In addition, the molecular beacons technique http://www.lependart.com could have broad applications across regenerative medicine, because it could be used with other types
of cells produced from stem cell cultures, such as
brain cells or
insulin - producing islet cells.
Gladstone scientist Dr. Sheng Ding has exposed more chameleon - like qualities
of the human skin cell, using chemical cocktails to turn skin cells into fully functional
brain, heart, liver, and
insulin - producing pancreas cells.
Therefore, the mechanism proposed behind decreased female central
insulin sensitivity is a modulation caused by
brain estrogen signaling, potentially mediated by estrogen effects on ERα in various regions
of the hypothalamus.
Intranasal
insulin decreased fat mass and reduced feelings
of hunger and leptin levels in men only, confirming higher sensitivity to catabolic
insulin action
of male
brains (16, 262, 269).
In the
brain, these signals tell the nerves controlling each specific organ what the proper response is — for example, digestive processes and release
of insulin — according to the signals detected in the GI tract.
Did you know that animal research played an important part in the development
of penicillin, blood transfusions, anaesthetics, deep
brain stimulation and
insulin for diabetics?
Interestingly, estrogen effects within the
brain with consequent alterations
of leptin and
insulin sensitivity could also be verified in male animals after estrogen administration (262).
Abbreviations: AL3E, after L3 ecdysis; FoxO, Forkhead Box O; FRE, FoxO - Response Element; GBP, Growth - Blocking Peptide; GFP, green fluorescent protein; IIS,
insulin /
insulin - like growth factor signaling; ILP,
insulin - like peptide; L3, third larval instar; pAKT, phosphorylated AKT; ppl, pumpless; qPCR, quantitative PCR; Rheb, Ras homolog enriched in
brain ortholog; TOR, Target
of Rapamycin
22 Sep 2015: Sano H, Nakamura A, Texada MJ, Truman JW, Ishimoto H, et al. (2015) Correction: The Nutrient - Responsive Hormone CCHamide - 2 Controls Growth by Regulating
Insulin - like Peptides in the
Brain of Drosophila melanogaster.
This signal regulates systemic growth by controlling the synthesis and secretion
of insulin - like peptides (ILPs) by the
insulin - producing cells
of the
brain [10].
(E, F) Co-culturing wild - type
brains with fat bodies from wild - type, but not from gbp1, gbp2 ex67, larvae induces low levels
of ILP2 (E) and ILP5 (F) accumulation in the
insulin - producing cells.
These results suggest that CCHa2 and CCHa2 - R functionally connect peripheral tissues with the
brain, and that CCHa2 / CCHa2 - R signaling coordinates the animal's growth with its nutritional conditions by regulating its production
of insulin - like peptides.
(A, B) Culturing wild - type
brains with conditioned media from GBP1 and GBP2 expressing cells induces low level
of ILP2 (A) and ILP5 (B) accumulation in the
insulin - producing cells.
(C, D) Culturing wild - type
brains with conditioned media from GBP1 and GBP2 expressing cells decreases the densities
of ILP2 (C) and ILP5 (D) signals in the
insulin - producing cells.
Although no signaling molecules that act downstream
of the Slif / TOR pathway have been identified yet, these fat body - derived signals ultimately regulate the production
of insulin - like peptides (Drosophila
insulin - like peptides; Dilps) secreted from the
brain [10][9].
A role for
brain insulin receptors in the locomotor stimulant response to ethanol in Drosophila melanogaster Christopher Kliethermes, Ernest Gallo Clinic & Research Center, Univ
of California, San Francisco, USA
Human skin cells have also been directly converted into neurons that can be used to study and find treatments for diseases in the
brain, as well as liver cells and
insulin - producing cells
of the pancreas.
Thomson still supports lifting Bush's restrictions, he said, because no one knows whether the new iPS cells can match embryonic cells» knack for growing into any kind
of tissue —
brain cells, heart muscle,
insulin - producing cells and dozens
of others — in mass quantities.
Delivery
of circulating lipoproteins to specific neurons in the Drosophila
brain regulates systemic
insulin signaling.
The proteomes
of the
brain, gut, fat body and muscle tissues from
insulin / IGF signalling mutant Drosophila are profiled.
In addition to increases in the volume
of the hippocampus, a part
of the
brain that can shrink in Alzheimer's patients, the study authors noted other biological changes, including improvements in CRP, a marker
of inflammation, as well as glucose metabolism and
insulin levels.
While the role
of exercise in circulation
of blood and hormone production, like
insulin, is widely acknowledged in the science community, scientists have only suspected physiological communication among our cells and organs — creating a chain reaction
of chatter, with fat cells communicating with muscle cells, muscle cells with
brains cells, and so forth.
They can also affect
brain chemistry and cause the release
of insulin into the blood stream.
• Optimise omega 3s: Low levels
of omega - 3 fatty acids are involved in normal
brain cell function,
insulin control and inflammation.
The sum result
of WGA mimicking
insulin is that your fat cells grow, your calorie consumption rises, your
brain cells don't get the fuel they need (leading to
brain fog), and muscle tone reduces.
Green tea is loaded with antioxidants to help reduce the risk
of heart disease and
insulin resistance, and contains L - theanine, an amino acid that increases levels
of serotonin, dopamine, and GABA, which helps protect the
brain.