There are one hundred billion nerve cells (neurons) within our brain
connecting to the many forms of communication networks of the body. Several
groups of nerve cells have specific functions, such as thinking, remembering, and
learning. Other groups help us to smell, see and hear.
Imagine the brain as a factory at work almost twenty-four hours a day,
receiving supplies, generating energy, constructing things and waste removal.
Then there is the process and storing of information and the main communicating
with the other nerve cells. The work function keeps everything moving perfect,
but it does require co-ordination and oxygen.
Researchers have discovered plaques and tangles, two abnormal structures
which are the prime suspect for causing damage and killing nerve cells within
the brain. Plaques are deposits of a protein fragment called beta-amyloid that
builds up in the spaces between nerve cells are referred to as plaques, and
Tangles are bent fibres of another protein called tau that tend to build up
inside of the cells.
As people age, they develop some plagues and tangles and those diagnosed
with Alzheimer's are found to generate far more. Recent study has shown that
the plagues and tangles are developed in a conventional method and expand in
areas critical to memory before dispersing into other areas of the brain. It is
not sure what roles these two abnormal structures exactly have but scientist
believe they play a vital role in closing the connections among nerve cells and
disturbing the procedure that cells need to survive.
With every moving and working nerve cell running well, and when an
unexpected failure occurs in the process an onslaught of problems can occur.
Scientists believe microscopic changes in the brain appear long before
Alzheimer's illness prevents part of the cells from functioning properly. The damage
and death of nerve cells are the main course of memory malfunction and other
dementia symptoms of Alzheimer's disease.
They are not sure where the trouble starts and ongoing research will
help us to learn more about this disease. As the damage spreads, cells begin to
lose their ability to work well and eventually die causing irreversible changes
in the brain.
A recent
study had concluded that women develop symptoms of Alzheimer's disease at a
faster rate than men do. A study conducted on Alzheimer's sufferers of both
sexes found that men with the problem regularly outperform women on tests that
measured a senior's memory capacity and their ability to perform verbal,
distance and depth tasks.
Research indicates that women are more likely to be diagnosed with
Alzheimer's disease than men are and the investigation into this research has
been sparse and inconsistent. This present study aimed to get a clearer
understanding of gender based differences and the possible causes of these
disparities.
Several indications research has seen the cause of some of the
disadvantages of women contracting the disease than men. Hormones play an enormous
role in making women more susceptible to Alzheimer's and studies have shown
that estrogen may serve as a shield against the disease.
Men have proved to be more powerful and have cognitive reserves, which
prove as a buffer against the symptoms of Alzheimer's, and other forms of dementia.
It appears that men have more exposure to reserve building activities than women
do.
Another factor considered are the genes and the primary genetic risk
factor for Alzheimer's disease, the APOE genotype has proved to be more damaging
on the cognitive functioning of women than men.
Alzheimer's is at the forefront of biomedical research today, and many possible
approaches are currently investigated worldwide. Researchers are uncovering
many aspects of the disease and related dementias as possible. Some of the most
remarkable progress has shed light on how Alzheimer's affects the brain. A
better understanding of how this works will lead to improved ways of dealing
with this disease.
This article was published on the Guardian LV a while back.
This article was published on the Guardian LV a while back.
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