Assignment 1
1) When verified the blood samples, a normal sample of blood was bright red in colour, however, Miriam’s blood colour was much duller red in comparison to the normal sample. Under the microscopic view, for normal blood cells, it was observed that the cells were spherical and completely enclosed. However, this was not the case in Miriam’s blood cells. In her microscopic view, few of her cells were not spherical, they were straight instead. Therefore, yes, Miriam red blood cells do show phenotypic characteristics of sickle-cell disease as her cells do appear in sickle shape. About 33% of her cells show that she has been affected by Sickle-cell anemia (number of sickle shaped cells divided by total number of cells in the microscopic
…show more content…
The migration pattern of the patient did show mutation in the protein. The patients RBC count is also quite high. Rose appeared to be heterozygous as only her father suffered from the abnormal complexion, but her mother and sister had normal complexions. When Rose’s peptide sequence was observed, on the 99th position, Asp- was replaced by His- amino acid. A change in the beta chain’s 99th amino acid results in replacing His- amino acid instead of Asp- amino acid, which is why abnormality in the haemoglobin is caused (Jones et al. 1967). A study was done in order to show the increase in oxygen affinity due to hemoglobin Yakima (Jones et al. 1967). The increase in oxygen affinity by the haemoglobin Yakima and few other similar abnormal haemoglobins might have been due to similar structures and might explain possible characteristics of reversible combinations with oxygen present in the normal haemoglobin (Jones et al. 1967). They study also concludes that the change in beta chain resulted due to slow electrophoretic mobility in the haemoglobin Yakima (Jones et al. 1967). The study provided an explanation that on the beta carbon with the alpha NH group, the hydrogen bond between OH and COO- group is present of the 4th position in the helix (Jones et al. 1967). However, this intrahelical bond is not formed by histidine amino acid at the position G1 in haemoglobin Yakima (Jones et al. 1967). This means, if an intrahelical hydrogen bond forms between alpha carbon of FG 5 and alpha NH group at G4, the size of the G helix would vary (Jones et al.
Sickle Cell Anemia is an inherited form of anemia, a condition in which there isn’t enough healthy red blood cells to carry sufficient oxygen throughout your body. Normally a person has flexible and round blood cells. With Sickle Cell anemia, Hemoglobin molecules in red blood cells, that carry oxygen in the body, are defective causing some of the red blood cells to change and form a sickle, or crescent moon shape.
Sickle Cell Disease is an illness that affects people all across the globe. This paper will give a description of the sickness through the discussion of the causes, symptoms, and possible cures. Sickle Cell Disease (SCD) is a "group of inherited red blood cell disorders."(1) These disorders can have various afflictions, such as pain, damage and a low blood count--Sickle Cell Anemia.
Sickle Cell anemia is a type of anemia- A condition where there aren’t enough healthy blood cells to carry adequate amounts of oxygen throughout the body. It is also known as Sickle Cell Disease (SCD). Normally red blood cells (RBC(s)) have a round shape, making them very flexible and giving them the ability to travel through your veins easily. However, when a person has sickle cell anemia, red blood cells become rigid and develop a crescent-like shape. This shape makes it hard for blood cells to travel through the body’s tiny veins. Thus, the crescent-shaped cells often get stuck in tight spots of the body and result in serious blood clots.
Sickle cell anemia occurs when a person inherits two abnormal genes (one from each parent) that cause their red blood cells to change shape. Instead of being flexible and round, these cells are more rigid and curved in the shape of the farm tool known as a sickle - that's where the disease gets its name. The shape
Sickle Cell anemia is a group of inherited red blood cell disorders, or a collection of recessive genetic disorders characterized by a hemoglobin variant called Hb S. Normal red blood cells are round like doughnuts, and they move through small blood tubes in the body to deliver oxygen. Sickle red blood cells become hard, sticky and shaped like sickles used to cut wheat. When these hard and pointed red cells go through the small blood tube, they clog the flow and break apart. This can cause pain, damage and a low blood count, or anemia. There is a substance in the red cell called hemoglobin that carries oxygen inside the cell. One little change in this substance causes the hemoglobin to form long hard rods in the red cell when it gives
Sickle cell is a blood disease. People with sickle cell anemia have crescent moon shaped blood cells that are hard and sticky. When the Sickle cells move through blood tubes, they can clog blood flow and break apart. This can cause main, damage, and a low blood count. The symptoms of the disease are not life threatening, however are not enjoyable. Sickle cell anemia can cause you to experience dizziness, headaches, and shortness of breath. Your skin may also turn more yellow or pale than it usually is. Sickle cell is an inherited disease. It is an unpreventable disease that you are born with. If you have a sickle cell gene, you do not have sickle cell, however your children have a 25% chance of having sickle cell anemia. This blood disorder can cause pain and discomfort but it is unlikely that your life will be in danger if you have the disease.
Predication: On 06/09/17, Asset Protection Manager (APM) Jakub Orlando received an investigative, analytical lead regarding Customer Service Associate (CSA) Rose Gomez who was suspected of using her own Balance Rewards card in different customer transactions to build up the point, that were redeemed for personal gain.
The sickle-shaped red blood cells are not as effective in carrying oxygen which deprive the tissues of a steady supply of oxygen. Also normal red blood cells are flexible and can move through the blood vessels easily to deliver oxygen to the tissues due to their biconcave shape. Sickle-shaped cell does not possess flexibility because of its shape and will therefore stick to the walls of the blood vessels, causing blockage which slows down blood flow and limits the oxygen transport to the body
In fact, sickle cell trait is protective against malaria. Malaria is a disease caused by blood-borne parasites transmitted through mosquito bites. According to a theory, the genetic mutation is connected with the sickle cell trait that occurred thousands of years ago. The mutation increased carriers to survive malaria infection. Survivors then passed the mutation to their offspring. Sickle cell disease is known as a sickle cell anemia. Sickle cell diseases are caused by genetic change in hemoglobin. Hemoglobin is called sickle hemoglobin (Hb-S), has a tendency to develop into rod-like structures that alter the shape of the usually flexible and round red blood cells. The cells take on a shape that resembles that curved blade of a sickle. Sickle cells have a shorter life span than normally-shaped red blood cells. The results in chronic anemia caused by low levels of hemoglobin and decreased numbers of red blood cells. Sickle cells are flexible and stickier than normal red blood cells and can become trapped in small blood vessels preventing blood flow. The delivery of oxygen can result in pain and damage to connect tissues and organs. Sickle cell disease is within the
The purpose of this essay it to determine whether or not Jonathon Jackson, a 30 year old air traffic controller whom has been faithful to his company and job for over eight years that has recently discovered he has sickle cell anemia, should be dismissed from his job regarding his genetic test results. Sickle cell anaemia is the most severe form of sickle cell disease and is a genetic disease of the red blood cells (Gibbons, 2015). Red blood cells have a disk like form which allows them the ability to travel through blood vessels. Although in people with sickle cell, the red blood cells form an abnormal crescent shape which makes them rigid and sticky as shown in Diagram 3 below. This causes the sickled cells to get trapped in small vessels which blocks blood from reaching different parts of the body leading to pain, tissue damage and many more symptoms (University of Utah, 2015). The term anaemia comes from having a shortage of red blood cells in your blood which occurs because sickled cells only last up to 10- 20 days while normal red blood cells last approximately 120 days. The name ‘sickle’ comes from an old farm tool known as a sickle as shown in Diagram 4 below which represents the same shape as curved sickled cells (Petch, 2012). Sickle cell disease affects millions of people worldwide and is most common in those who have ancestors from Africa, the Mediterranean, The Arabian Peninsula and Spanish speaking areas in South America. People with sickle cell anaemia on
The symptoms of Sickle Cell Anemia were observed for over five thousand years in Africa. The first reported case of sickle cell anemia however was in 1846, when an autopsy of a runaway slave showed an absence of a spleen. However, it was first discovered by Ernest Irons, an intern of Dr James B Herrick in the United States in 1910. He viewed an anemic patient’s blood under the microscope and observed “elongated and sickle shaped” red blood cells. However, cases of these sickle shaped red blood cells were of African patients only. In 1922, the disease was named “sickle cell anemia” by Vernon Mason. Hahn and Gillespie discovered in 1927 that red blood cells are made into sickle shaped cells by the change in their molecular structure in the absence of oxygen. In 1948, Watson suggested that infants did not show symptoms of sickle cell anemia because of the presence of fetal hemoglobin, HbF. In 1949, it was shown that the disease was inherited and that only people homozygous for the gene got the disease. In 1951, Linus Pauling and his colleagues showed that sickle cell anemia was caused by abnormality in hemoglobin and had a different chemical structure than normal hemoglobin molecules. They proved the change in structure of sickled cells through gel electrophoresis of hemoglobin from normal blood cells and sickled blood cells. They published the paper “Sickle Cell Anemia, a molecular disease” that spread awareness of the disease. The actual amino acid change however was
Sickle cell anemia is an inherited condition that makes the red blood cells appear sickle shaped and unable to function well. Red blood cells play a role in transport of oxygen to tissues and carbon dioxide from tissues as a waste product. Thus in a person with sickle cell anemia, delivery of oxygen and removal of waste gas compromised. Some of the symptoms of this condition include shortness of breath during light exercise like climbing stairs, dizziness and may ultimately lead to death if not managed quickly.
Sickle Cell Disease is an inherited blood disorder that affects the red blood cells. The red blood cells that turns normal red blood cells that are healthy and functioning into cells that are shaped sickled and crescent moon form become severely low and anemic. The oxygen - carry molecule in red blood cells that are called hemoglobin that creates an error in the red blood cell, that makes the cell sickled. When the sickled shaped cells block small vessels the condition results in oxygen depletion to the tissues surrounding the blocked vessels, Which the damages tissues causes many health
A 25-year-old women with homozygous sickle cell disease presented to tertiary center at 32 weeks’ gestation with weakness, fever, and worsening anemia. Her obstetric history included previous pregnancy post two years complicated with mild preeclampsia resulting in cesarean delivery at term, but had no reports of sickle cell complications like painful crisis, splenic sequestration or blood transfusion. On arrival she reported left upper abdominal pain, temperature 38oC, heart rate 115bpm, blood pressure of 120/80. Her spleen was palpable 4cm below left costal margin with tenderness. Laboratory results indicated hemoglobin 2.4g/dl and hematocrit 7.8%.
Sickle Cell Anemia is a disease that affects how oxygen is carried throughout the body by blood. Specifically, sickle cell anemia is characterized by a change in the shape of red blood cells from a smooth donut shape to a crescent or sickled shape, almost the same shape as a crescent moon. The sickled cells are very long and stiff, so sometimes