That call was made based on the evidence arising from many fields of medical research, and from a considered perspective of aging as a process
of damage accumulation, one that can be most effectively treated by repair of that damage.
Not exact matches
One study published in the American Academy
of Optometry's Optometry & Vision Science journal found that using goji berry daily as a dietary supplementation for 90 days increases plasma zeaxanthin and antioxidant levels significantly, which protect eyes from hypopigmentation and
accumulation of oxidative stress compounds that can
damage the macula.
One
of the primary causes
of cancer is the
accumulation of DNA
damage by free radicals.
The governor said that a total
of 14 fatalities and six injuries were attributed to the storm, and more than 370 roofs were
damaged and 38 structures completely destroyed due to the weight
of the considerable snow
accumulation.
In this study, partial reprogramming
of cells in vitro reduced DNA
damage accumulation and restored nuclear structure.
«New method to reduce
accumulation of damaging Huntington's disease protein.»
The newly identified gene affects
accumulation of amyloid - beta, a protein believed to be one
of the main causes
of the
damage that underpins this brain disease in humans.
Oxidative stress is
damage to the body caused by an
accumulation of unstable molecules called free radicals.
Scientists have associated the
accumulation of these clusters with tissue
damage that leaves sponge - like holes in the brain.
The finding identifies how vulnerable cell groups react and respond differently to the
accumulation of mitochondrial DNA
damage seen in the disease, highlighting the need for cell - specific treatments.
The
accumulation of these clusters has been associated with tissue
damage that leaves sponge - like holes in the brain.
JA is produced immediately after something
damages the plant tissue, and its
accumulation usually leads to the creation
of the compounds the insects find so distasteful.
These proteasomes usually rapidly stop functioning, leading to the
accumulation of damaged proteins that further impair cell function, contributing to the vicious cycle that leads to cell death.
In aging, this gene expression presumably occurs to compensate for the
accumulation of protein
damages; during diapause, the same genes may be activated to prepare the whole embryo to catch up with the interrupted development and be ready to hatch as the rainy season starts.
Results show that one night
of partial sleep deprivation activates gene expression patterns in peripheral blood mononuclear cells (PBMCs) consistent with increasing
accumulation of damage that initiates cell cycle arrest and increases susceptibility to senescence.
To understand how this
accumulation occurs in response to DNA
damage, the scientists considered the role
of CDK, or cyclin - dependent kinases.
Prof. Umeda found that inhibiting CDKs even with the absence
of DNA
damage would cause the Rep - MYB3R
accumulation seen with DNA
damage and stall the cell cycle before the M phase transition.
There is a great post at the Council on Foreign Relations blog where by Michael Levi boils down global climate change in to two overarching unknowns: (1) extent
of damage by an
accumulation of greenhouse gases, and (2) an uncertainty around which policies, or set
of policies, will succeed in reducing emissions.
Within minutes,
accumulation of bacteria interferes with repair
of the tissue
damage — and these results are the earliest indication showing H. pylori causing disease.
«How nerve cells are
damaged by
accumulation of abnormal proteins.»
Fatty liver disease results from excess
accumulation of fat in the liver (hepatic steatosis), leading to inflammation and
damage to the liver.
Protein aggregates that form after a cell is exposed to high, non-lethal temperatures appear to be part
of an organized response to stress, and not the
accumulation of damaged proteins en route to destruction.
Furthermore, impaired subthalamic activity was caused by anomalous receptor signaling, leading to defective energy metabolism and
accumulation of damaging oxidants.
The cause
of β cell
damage in T2D is currently unknown, but compelling evidence implicates the formation and
accumulation of IAPP misfolded aggregates in the pancreas (Hull et al., 2004; Haataja et al., 2008; Jurgens et al., 2011; Mukherjee et al., 2015), in a manner similar to the way protein aggregates have been shown to be causative agents in a variety
of chronic and progressive PMDs (Soto, 2003).
On the other hand, if the stressful conditions prevail,
accumulation of the
damaged symbiotic zooxanthellae may not maintain the expulsion, which will gradually accumulate in coral tissues.
But in obesity,
accumulation of lipids can cause fatty liver, resulting in cellular
damage to the organ.
This response may be an adaptive strategy to moderate stress to ensure survival, but the
accumulation of damaged Symbiodinium, which causes subsequent coral deterioration, may occur when this response can not cope with the magnitude or duration
of environmental stress, and this might be a possible mechanism underlying coral bleaching during prolonged moderate thermal stress.
However, under thermal stress, the
accumulation of damaged cells may exceed the increased rate
of expulsion
of digested zooxanthella.
These researchers consider that this loss
of zooxanthellae and the
accumulation of damaged cells results in coral bleaching.
Other genetic diseases include Tay - Sachs disease (
damage to the gene for the enzyme hexosaminidase A leads to an
accumulation of a chemical in the brain that destroys it), sickle cell anemia (improper coding
of the gene that produces hemoglobin), hemophilia (lack
of a gene for a blood - clotting factor) and muscular dystrophy (caused by a defective gene on the X chromosome).
Long - lived cells such as cardiomyocytes, retinal pigmented epithelial cells and neurons are particularly dependent
of the efficient function
of their lysosomes to prevent the
accumulation of damaged macromolecules over their extended lifetimes.
The latter triggers a vicious cycle
of persistent DDR and pro-inflammatory signals leading to chronic inflammation, tissue malfunction and degeneration with old age; in DNA repair - deficient patients, the rapid
accumulation of DNA
damage (in view
of the DNA repair defect) would trigger the untimely activation
of DDR signaling leading to the early manifestation
of age - related pathology that is associated with chronic inflammation.
Since aging is exactly an
accumulation of damage and the consequences
of that
damage, repair
of the
damage is the basis for rejuvenation, the reversal and prevention
of degenerative aging and all age - related disease.
Moreover, some scientists suggest, that the
damage of the DNA and the corresponding with it «wrong proteins» is a main factor for the
accumulation of «all the cellular gunk», and they suppose, that even after the removal
of the «gunc», it will accumulate again if the DNA remains
damaged.
AD, PD, and other diseases and functional deficits
of degenerative aging processes emerge from the ongoing and often mutually - reinforcing
accumulation of multiple forms
of cellular and molecular
damage.
Despite the efficiency
of DNA repair mechanisms, some DNA
damage is left unrepaired leading to the gradual
accumulation of DNA lesions in cells.
Reduction
of the DNA repair factor led to an
accumulation of DNA
damage and to neuronal shrinkage.
In addition, the loss
of Ripk2 has been demonstrated to result in the inability
of cells to carry out mitophagy, leading to enhanced mitochondrial production
of superoxide / reactive oxygen species and
accumulation of damaged mitochondria that will trigger a caspase 1 — dependent inflammasome activation (Lupfer et al., 2014).
Age - induced
accumulation of nuclear DNA
damage, decline in mitochondrial function and alterations in gene expression have been thought to contribute to aging.
September 10, 2015 Protein aggregation after heat shock is an organized, reversible cellular response Protein aggregates that form after a cell is exposed to high, non-lethal temperatures appear to be part
of an organized response to stress, and not the
accumulation of damaged proteins en route to destruction.
Aging is characterized by an
accumulation of molecular
damage, decreased stress responses, and a reduced stem cell function, regeneration and organ maintenance.
One reason for this decline is thought to be the inevitable
accumulation of misfolded and
damaged proteins with time accompanied by the collapse in the cells» protective protein quality control mechanisms to deal with
damaged proteins and restore homeostasis.
On the one hand, autophagy functions as a tumor suppressor mechanism by preventing the
accumulation of damaged organelles and aggregated proteins.
It's the
accumulation of damage and corrosion.
«In dermatology, the appearance
of hyperpigmented spots — especially in chronic sun -
damaged skin — is linked to a high lifetime
accumulation of sunlight,» study author Christoph Schwab, MD, wrote in an email to Health.
The functional disruption leads to oxidative stress inside the cell; an
accumulation of highly reactive oxygen compounds takes place and a large number
of the cell's molecules are
damaged.
Many
of the studies which demonstrate the effectiveness
of ice baths in reducing inflammation and
accumulation of white blood cells (the guys responsible for destroying
damaged tissue and creating signals for re-growth) measure this response over a very short time frame - for hours or a couple
of days at best.
A diet high in saturated and trans fats and low in antioxidants can
damage blood vessel walls to cause an immune response related to inflammation and the development
of cardiovascular ailments.8, 9,10 Low - grade inflammation in older individuals has been shown to contribute to fat
accumulation, insulin resistance, and inflammatory - related diseases.11
In our pharmacological class, we discovered aging due to oxidative
damage, number
of cell divisons, waste
accumulation theory, teleomer lengths, effects due to circadian clock etc..
These are caused by
damage to nerves (due to the
accumulation of homocysteine and methylmalonic acid) and low neurotransmitter levels (because
of the impaired synthesis
of methionine, a precursor
of many neurotransmitters).