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Friend
If you worked during the 20th century in the construction industry or in shipbuilding and was exposed to asbestos, you should read this until the end.
Friend
If you worked during the 20th century in the construction industry or in shipbuilding and was exposed to asbestos, you should read this until the end.
CAUSES OF MESOTHELIOMA
Mesothelioma is a highly aggressive cancer that
is difficult both to diagnose and to treat. Between 2,000 and 3,000 cases of
malignant mesothelioma are diagnosed each year in America, and the incidence of
mesothelioma cancers is projected to increase during the next decade.
What Causes
Mesothelioma?
An overwhelming body of scientific and medical
evidence points to the fact that malignant mesothelioma is caused by asbestos
exposure. Currently, there is no other known cause for the disease. Asbestos is
a naturally occurring fibrous substance that was very widely used in the
construction and shipbuilding industries during the first three-quarters of the
20th century. Asbestos was touted for its durability, fire resistance, and
excellent insulating properties, and was used in several thousand different
manufactured products, including construction materials, household appliances,
and brake linings.
How Does Asbestos
Cause Mesothelioma?
Internal organs and body cavities are covered
by a thin tissue membrane called mesothelium. This lining covers the lungs
(where it is called the pleura), the heart (where it is known as the
pericardium), and body cavities such as the abdominal cavity (where it is
called the peritoneum). The mesothelium provides both support and protection
for organs and body cavities, as well as serves as a source of lubrication that
helps support organ function and health.
Mesothelioma develops in the linings of organs
and body cavities, typically in the pleura, pericardium, or peritoneum. In very
rare cases, mesothelioma may develop in the lining of the testicles, known as
the tunica vaginalis. The exact method by which asbestos causes mesothelioma is
still being researched, but medical professionals offer four different
theories:
• Asbestos causes irritation and inflammation
of mesothelial cells, eventually leading to irreversible scarring, cellular
damage, and eventually cancer.
• Asbestos fibers enter cells and disrupt the
function of cellular structures that are essential for normal cell division,
causing cellular changes that lead to cancer.
• Asbestos causes the production of oxygen “free
radicals.” These molecules damage cellular DNA and cause cells to mutate and
become cancerous.
• The presence of asbestos causes cells to
produce oncoproteins. These molecules cause mesothelial cells to ignore normal
cellular division restraints, leading to cancer.
The element that ties each theory together
states that asbestos induces cellular damage, which causes cells to lose
control over their own cycles of normal division and begin dividing
uncontrollably. Healthy cells follow
cycles of cell division that ensure tissues and
organs do not grow beyond normal size; in cancer cells, these restraints are
lost.
In cases of mesothelioma, the result is that
membranes in the affected location begin to thicken, and fluid builds up in the
spaces between membrane layers. As cancer cells continue to divide and pile on
top of one another, tumors begin to form. The end result of uncontrolled
division of cancer cells is that the function of the body’s organs and systems
are impaired, due to factors such as internal pressure caused by the growth of tumors,
and the reduction of availability of essential nutrients for organs.
Are There Any Other
Causes of Mesothelioma?
The answer to this question is a simple “no.”
Doctors and research scientists have not been able to determine any other
causes of mesothelioma other than asbestos exposure. They do know, however,
that smoking can aggravate a less serious asbestos-related disease, such as
asbestosis, and prompt the formation of tumors and the onset of mesothelioma.
Those who have been exposed to asbestos on a regular basis are advised not to
smoke.
I recommend that if you or someone in your family has adiagnosis of this disease are placed in contact with TheMesothelioma Cancer Center, they have a U.S. phone line 1-800-590-6512. They can give you much information about this topic.
I hope you keep visiting us and I send you a hug
God Bless
JARAMILLO JOHNY
I hope you keep visiting us and I send you a hug
God Bless
JARAMILLO JOHNY
