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Down syndrome abstract term paper
The cause and effects of Down Syndrome
General information on down syndrome
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Peyton Owen
Bio 1014
5 December 2016
I. Introduction:
In our world today, Down Syndrome, also known as Trisomy 21, is one of the most common genetic conditions. Down Syndrome affects one in every 691 babies each year. Approximately 400,000 Americans have Down Syndrome and around 6,000 babies in the United States are born with it every year (“What is Down Syndrome”). It is very likely for a child with Down Syndrome to develop leukemia in their lifetime. The risk of leukemia is much higher for that of someone with Down Syndrome than it is for someone not affected by Down Syndrome. So, is there some kind of connection between the development of Leukemia in children with Down syndrome? II. What is Down
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The disease is known by the uncontrolled growth of blood cells, usually white blood cells in the bone marrow (“Leukemia Information”). The leukemia cells overcrowd and replace normal blood and marrow cells (“Leukemia Information”). Leukemia is likely to occur when when some blood cells have mutations in their DNA. There could be other changes in cells that could contribute to the forming of Leukemia (“Leukemia”). According to Leukemia Causes - Mayo Clinic, Certain abnormalities cause the cell to grow and divide more rapidly and to continue living when normal cells would die. Over time, these abnormal cells can crowd out healthy blood cells in the bone marrow, leading to fewer healthy white blood cells, red blood cells and platelets, causing the signs and symptoms of leukemia (“Leukemia”). Leukemia is classified based on its speed of progression and the type of cells involved …show more content…
First there is Acute leukemia. Acute leukemia is when the abnormal blood cells are immature blood cells, known as blasts (“Leukemia”). They can’t carry out their normal functions, and they multiply rapidly so the disease worsens quickly (“Leukemia”). Acute leukemia is probably the most aggressive form of leukemia. This form requires aggressive timely treatment. (“Leukemia”) When Chronic leukemia occurs, cells are only capable of maturing partly. The cells are unable to to mature completely in this type of leukemia (“Leukemia”). Although the cells look fairly normal, they are not (“What is Chronic Myeloid Leukemia”). Generally, they do not fight off infection as well as normal white blood cells do. With Chronic leukemia, it usually takes a while before they cause problems (“What is Chronic Myeloid Leukemia”). Most people are able to live many years with Chronic leukemia, but chronic leukemia is generally harder to cure than acute leukemia (“What is Chronic Myeloid Leukemia”). In acute leukemias, cells do not mature and progress the way they should, causing the immature cells to continue to reproduce and build up (“What is Chronic Myeloid Leukemia”). Without treatment, people generally live for a few months. In some cases, the leukemia responds favorably well to treatment and the patient can be cured (“What is Chronic Myeloid
Leukemia is another type of cancer it is a malignant progressive disease. Some symptoms of leukemia is people weight loss, frequent infections, and easy bleeding or bruising. Also chills, dizziness, fatigue, fever, nausea, night sweats, weakness, or sweating are also side effect or symptoms of leukemia. Most people have to shave their hair of and some people fight the cancer and win. Leukemia involves abnormal white blood cells these cells responsible for fighting infection. The abnormal cell in leukemia does not function in the same way as normal white blood cells do. The leukemia cells continue to grow and divide, eventually crowding out the normal blood cells. There is over 50,000 cases of leukemia occur yearly in the U.S.
There are four main different types of leukemia. It is grouped by how fast it spreads and what kind of white blood cell it affects. The group of how fast leukemia spreads is either acute or chronic. Acute leukemia gets worse faster and may make a person feel sick right away. Where chronic leukemia gets worse slowly and may not cause symptoms for years. The group of what kind of blood cells leukemia affects is either lymphatic or myelogenous. Lymphatic leukemia affects white blood cells called lymphocytes. Where myelogenous leukemia affects white blood cells called myelocytes. When the two groups come together they form four main types of leukemia. They are acute lymphoblastic leukemia (ALL), acute myelogenous leukemia (AML), chronic lymphoblastic leukemia (CLL), and chronic myelogenous leukemia (CML). Each type is different in its own way but experts still don’t know for sure what causes leukemia.
What is Leukemia? Leukemia is a cancer in blood forming cells that are in early stages of development. Most of the time the white blood cells, but some types of leukemia start in other types of blood cells. Blood cells are form in bone marrow. Any of these cells can turn into a leukemia cell, once this happens the cell does not mature like it should. The cell may start to produce rapidly and the mutated cells probably won’t go through apoptosis like they should. These cells build up in the bone marrow and crowd out the healthy cells. Typically, leukemia cells get into the blood stream rather quickly. From the blood stream they can spread to places like lymph nodes, spleen, liver, central nervous system or other organs where the leukemia cells can cause those other cells to function irregularly.
Most cases of Down syndrome are not inherited. When the condition is caused by trisomy 21, the chromosomal abnormality occurs as a random event during the formation of reproductive cells in a parent. The abnormality usually occurs in egg cells, but it occasionally occurs in sperm cells. An error in cell division called nondisjunction results in a reproductive cell with an abnormal number of chromosomes. For example, an egg or sperm cell may gain an extra copy of chromosome 21. If one of these atypical reproductive cells contributes to the genetic makeup of a child, the child will have an extra chromosome 21 in each of the body's cells.
The emphasis on health and fitness has become paramount in our society today in an effort to prevent and combat diseases such as Cancers. Cancers are a group of over 100 diseases that affects every aspect of the human system from skin, to bones, to muscles, to blood. One of the most common blood disorders is Leukemia. As defined by the U.S. National Library of Medicine, Leukemia is a type of blood cancer that begins in the bone marrow. The bone marrow is the soft tissue in the center of the bone that is responsible for the production of blood cells. The term leukemia means white blood. The term leukocytes refer to white blood cells, which are body’s defense against infections and other foreign substances. When Leukemia occurs there is an uncontrolled increase in the number of white blood cells. When this occurs, these cancerous cells inhibit the production of healthy red blood cells, platelets, and mature white blood cells. Over time the cancerous cells can spread to the bloodstream and lymph nodes. They can also travel to the Central Nervous System and the rest of the body.
- Acute myelogenous leukemia (AML): Is a cancer of the bone marrow and the blood that will progress quickly without treatment. This type of leukemia affects mainly the cells that aren’t fully developed. Therefore, making the cells not carry out their normal functions. With this type of dysfunctional activity in the cells at an early stage, this why it is very important to get care and treatment as soon as possible.
There is no actual behavior or environmental factor that could cause Down syndrome. Down syndrome is mainly caused by three different disorders. Trisomy 21, Mosaic Down Syndrome, or Translocation Down Syndrome, are three different types of causes. “Trisomy 21. About 95 percent of the time, Down syndrome is caused by trisomy 21 — the child has three copies of chromosome 21 (instead of the usual two copies) in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.” Trisomy is the most common cause for the Down syndrome disorder. The Mosaic Down syndrome is a one of the rare causes that the disorder has. This happens when both normal and abnormal are caused by cell division after fertilization. Translocation Down Syndrome occurs when a part of the chromosome 21 attaches itself to another chromosomes and then it has two unusual copies of the chromosome. Children who have the disorder are different individuals and have different facial appearance. “Infants with Down syndrome may be average size, but typically they grow slowly and remain shorter than other children the same age. In general, developmental milestones, such as sitting and crawling, occur at about twice the age of children without impairment.” Knowing about all the causes or symptoms in Down syndrome can help to try to figure out a way to help the
An individual who has Down syndrome can be recognized as different from others since he or she have different physical features, but the question is, what causes individuals to have deformed face, little different features than someone who does not have Down syndrome? The reason some individuals are born with Down syndrome is because of an extra chromosome, this chromosome, which carries number 21. It is also known as Trisomy 21. Having this sort of disability, does not truly affect their life in a way they are not able to live, but it affects their cognitive levels, their physical growth of the child with Down syndrome. As the mother goes for an ultra sound, doctors can detect that the child within the mother’s womb has Down syndrome. (1) Mothers over age 35 have higher risk of giving birth to a child with Down syndrome, and 1 in every 1,000 women at the age of 30. In addition, in every 100 women, who age 40 there is a mother has a child with this case. As woman ages there is a higher chance of conceiving a child with Down syndrome than a woman who is in her mid-20s or younger. (2) This essay will highlight the effects and supports of Down syndrome in children.
Children born to older parents are at greater risk for genetic abnormalities, such as Down syndrome. No one knows what causes the chromosomal abnormality that results in Down syndrome, a condition according to the National Association for Down syndrome, affects one in 800 to 1,000 babies in the United States. Any woman regardless of her culture, race and socio-economic status can have a baby with Down syndrome. However, a mother’ age seems to be a unifying factor among children with Down syndrome. Older women have a greater chance of giving birth to a baby with Down syndrome, and the risks increases with every passing year. The National Association for Down syndrome estimates the chance of having a baby with Down syndrome to be as follows:
Down syndrome, a genetic disorder, is the most common cause for intellectual disabilities, occurring at an average of one out of every 700 births (CDS, 2006). This disorder is caused by the extra chromosome 21 (also known as Trisomy 21). According to Hassold and Sherman (2002), the probability of giving birth to a child with DS is not linked to any race, ethnicity, socioeconomic status or geographic location. Maternal age seems to be the only etiological factor that may cause DS.
The term leukemia refers to cancer of the white blood cells known as leukocytes or WBC’s(“Leukemia”). Leukemia forms in the bone marrow forming unhealthy cells in the body. When someone has leukemia, larger numbers of abnormal white
Leukemia is an abnormality in the blood where the cancer cells are in the blood,but DS children respond well towards chemotherapies and have a better survival rate. Myelodysplastic syndrome is found in the bone marrow and is pre-cancerous meaning that it more of a chance of becoming cancerous. Myelodysplastic syndrome is when abnormal cells take over the bone marrow and the platelet counts in the red blood cells decrease( Dixion 2-3). Transient myeloproliferative disorder is only found in newborn babies with Down syndrome. This is when the abnormal white blood cells grow rapidly,but only ten to twenty percent of babies develop transient myeloproliferative disorder. This can turn out to be cancerous or non-cancerous either can be present. Treatment varies for different babies and the abnormal cells may go away by themselves and will not need to find the best treatment plan, but no matter what the baby will need to be followed closely to make sure it goes away. WIth the abnormal white blood cells makes the body of someone with DS more prone to leukemia, but the leukemia will not develop in the child until later years( Dixion
‘’Down syndrome is a type of mental retardation caused by extra genetic material in chromosome 21’’(1). In the beginning, children with Down syndrome were referred as “mongoloids” because they looked like people from Mongolia but, the term was changed to Down’s syndrome. Down’s Syndrome named after John Langdon Down, the man who first described it (2). Down syndrome due to a genetic cause and it has more than one type and characteristics.
Down syndrome, which is also called Trisomy 21, is a condition in which extra genetic material causes delays in the way a child develops mentally and physically. Down syndrome is named after British doctor John Langdon Down. He first prescribed the condition in 1887. In 1959, an extra chromosome was identified as the cause. Down syndrome features and problems can vary from child to child. Some children need a lot of medical attention and others lead healthy lives. In the United States, Down syndrome affects around 1 in every 800 babies. Down syndrome cannot be prevented, but can be detected before a child is born. There are two types of prenatal tests: screening and diagnostic. Screening tests estimate the risk that a fetus has Down syndrome.
This occurs when the child has an extra copy of chromosome 21, it can be called trisomy 21. Down syndrome is the most common chromosome disorder and cause of mental retardation. The most common case that causes Down syndrome is non-disjunction, which is when the one parent passes on 24 chromosomes and one parent passes on 23 chromosomes resulting in 47 chromosomes. As the woman grows older, the risk of having a child with down syndrome becomes increased. Down syndrome affects the physical characteristics of a child, which include a smaller and lower set nose and mouth, rounded cheeks and small ears. Down syndrome patients tend to have small hands with little fingers. Studies have shown that 30-50% of children who have Down syndrome have heart