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Sickle cell research essay
Flashcards sickle cell disease
An Overview Of Sickle Cell Disease
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Sickle Cell Anemia and Red Blood Cell Physiology Introduction Sickle cell anemia is a disorder in which the body makes crescent-shaped red blood cells. Normal red blood cells are disc-shaped. They move easily through your blood vessels and contain an iron rich protein called hemoglobin. This protein carries oxygen from the lungs to the rest of the body. Sickle cells contain abnormal hemoglobin due to a mutation in the hemoglobin chain. This type of hemoglobin is known as sickle hemoglobin or hemoglobin S. Sickle hemoglobin is what distorts red blood cells into a sickle shape. Sickle cells are sticky and less elastic than normal red blood cells. They are not able to pass through the blood as easily so in result they tend to block blood flow in blood vessels. Blocked blood flow causes pain, organ damage, and increases the risk for infections. In this disease, the abnormal red blood cells begin to die at a much faster rate then they are produced. The bone marrow attempts to create more red blood cells but it does not match the rate of how fast they die. Sickle cell anemia is an inheritable disease and has no widely available cure. Annotated Bibliography Maciaszek, Andemariam, and Lykotrafitis. “Microelasticity of Red Blood Cells in Sickle Cell Disease”. [Internet] 2011 January 11. [cited 2014 May 24] Available from: http://www.engr.uconn.edu/~gelyko/articles/SAGE_11.pdf This paper describes how atomic force microscopy is used to measure mechanical properties of living and fixed cells. This method was applied to red blood cells from patients with sickle cell disease to determine the difference in elasticity between the cells in an oxygenated state and a deoxygenated state. Distinctions are also made between the shape and ... ... middle of paper ... ... beyond the age of 20 and most did not survive to age 50. With todays research, doctors can make an early diagnosis and use recently developed treatments to improve the life expectancy of people with the disease. Patients with hemoglobin S may now live to age 50 or older. Current studies attempt to make new drugs to protect organs against damage from the disease. With such deep commitment, it is possible that there will one day be a cure. Incidence In 1990, sickle cell anemia was identified as a cause of death for a large number of children in Connecticut. In result all babies born are to be checked for sickle cell. At one point, the newborn screenings in Connecticut identified over 570 babies with the disease and 17,475 with the trait. Eventually, the screening program and follow-up care methods helped make a great reduction in the mortality of children.
The cells are held together by regions known as intercalated disks. These overlapping, finger-like extensions of the cell membrane contain gap junctions and desmosomes. Gap junctions are protein-lined tunnels which allow currents to travel from cell to cell to ensure the cells contract in unison. Desmosomes are known for holding the Heart Cells together during a contraction. This is induced by the sliding of the cardiac
A normal red blood cell can live up to one hundred and twenty days. A red blood cell with the membrane defect might live ten to thirty days. When the child develops low levels of red blood cells, it is because the cells break down faster than they are being replenished. The body contains hemoglobin, which is a form of protein that carries oxygen around the body, giving it to the cells that need it (Seattle Childrens).... ...
We have yet to find a cure, but they have found a drug that helps reduce
What is Sickle cell disease? Sickle cell affects a disease; that disease is called which affects the hemoglobin when the red blood cells that send oxygen through the body are killed off and weakened. Sickle cells can be found in every 1 and 1000 African Americans, it is affecting about 70,000 to 80,000 Americans in the United States. Sickle cell is a death threatening disease, and the severity of symptoms can vary from person to person (Sickle cell disease (SCD), 2015). Some people have light conditions, but others can have severe conditions, which, mean they could be hospitalized. Characteristics of this disease are caused by a minimum of low blood cells, which is called anemia.
During a short break of solitude from studying, I explored and came across that the environment in which most African Americans reside in has a high occurrence of malaria virus. The malaria virus disease is contagious and when it contaminates someone with sickle cell traits, it cannot survive on the external part of the human body so therefore the individual doesn’t develop the deadly malaria virus. While looking further into our class textbook on Human Genetics 11th Edition by Ricki Lewis, and this issue of sickle-cell among the African Americans, I
The first funding for sickle cell disease began thirty years ago the federal legislation dealing with sickle cell was accepted. This legislation present notab...
Sickle cell anemia is an inherited disease of red blood cells. Normally red blood cells contain a protein called hemoglobin A, which carries oxygen to all the organs in the body. With sickle cell anemia, however, the body makes a different kind of protein, called hemoglobin S.
Sickle Cell Anemia is an inherited blood disorder that is extremely challenging to live with. Its symptoms are many, with the most prominent being severe pain that can become unbearable to the point where hospitalization is required. Because sickle cell is a genetic disorder, a person is born with it and it is usually permanent. Unfortunately, there are risks and complications associated with this disease. However there are various treatment options for a patient with sickle cell and also support to help people understand and cope with this challenging disease.
Hamosh, A. (1999, June 13). OMIM Entry - # 603903 - SICKLE CELL ANEMIA. OMIM Entry - # 603903 - SICKLE CELL ANEMIA. Retrieved April 26, 2014, from http://www.omim.org/entry/603903?search=sickle%20cell%20anemia&highlight=cell%20anemia%20anaemia%20sickle
...agnosed at a later stage, most people die within two years of diagnosis and treatment.
In this experiment, we determined the isotonic and hemolytic molar concentrations of non-penetrating moles for sheep red blood cells and measured the absorbance levels from each concentration. The results concluded that as the concentration increased the absorbance reading increased as well. A higher absorbance signifies higher amounts of intact RBCs. The isotonic molar concentration for NaCl and glucose is 0.3 M. The hemolysis molar concentration for NaCl and glucose is 0.05 M. Adding red blood cells to an isotonic solution, there will be no isotonic pressure and no net movement. The isotonic solution leaves the red blood cells intact. RBC contain hemoglobin which absorbs light, hemoglobin falls to the bottom of the tube and no light is absorbed. Determining the isotonic concentration of NaCl and glucose by finding the lowest molar concentration. In contrast to isotonic molar concentration, hemolysis can be determined by finding the
Describe the microscopic features of osseous tissue that help long bones withstand compressive forces without breaking.
While malaria is a curable disease if noticed early enough, there are still hundreds and hundreds of deaths due to malaria every year. This is because not everyone has access to the medicines that can be used to prevent this awful disease. In the last couple of years, a lot of progress has been made in developing a cure or vaccine for malaria. Hopefully, one will be developed within the next few years.
Individuals who inherited this disease from their parents do not possess the standard hemoglobin that should be contained in RBC. Hemoglobin is a protein present in RBC, which transports oxygen to all parts of the body (National Heart and Blood Institute, 2017). The disease which impairs the hemoglobin’s responsibility, prevents blood cells from receiving the sufficient oxygen, causes RBC to be sickle shaped. Sickle cell disease precedes to several painful health complications such as VOC (vaso- occlusive crises), which are severe pain recurring episodes, that can lead to irreversible organ damage. Sickle cell anemia causes red blood cells to hemolyze continuously through an individual’s lifetime… hemolysis is the breakdown of red blood cells (Krishnamoorthy, et al. 2017). An experimental study was conducted with SCD Townes mice to test a possible solution for sickle cell anemia. Throughout a seven-week span, mice orally conveyed dosages of 100 mg/kg of DMF. DMF known as dimethyl fumarate is small complex molecule and which binds and activates to enhance Nrf2 to enhance Hbf. “Nrf2 is a transcription factor that triggers cytoprotective and antioxidant pathways to limit oxidative damage, inflammation, and increases HbF” (Krishnamoorthy, et al. 2017). Fetal hemoglobin (Hbf) is the hemoglobin present in fetuses; it is responsible for the transportation of oxygen
So how big are cells? Most human cells are about ten microns in diameter. This is about o...