Doctor insights on:
What Chromosome Carries The Gene For Sickle Cell Anemia
From a medical standpoint, "genetic" refers to the potential heritability of various medical conditions. While some conditions are inevitable (at some point in one's life) as a consequence of simple genetic heritability (eg huntington's disease), a large number of medical conditions (including all behaviorial health disorders) are the expressed final pathway of a ...Read more
It is inherited: Hemoglobin (HGB) is a complicated chemical that is in the red blood cells and carries oxygen. We inherit one gene from each parent that makes one of the parts of HGB called beta chains. If we inherit a sickle beta chain gene from one parent and a normal beta chain gene from the other, we have sickle trait. If we inherit a sickle beta chain gene from both parents, we have sickle cell anemia. ...Read more
Several: There are several genetic defects that lead to sickle cell anemia. They all lead to a change in the 6th Amino Acid in the beta-globin chain in which valine is substituted for glutamic acid. At least 5 different dna mutations have been identified that all lead to the same Amino Acid substitution, and thus, sickle cell anemia. ...Read more
Yes: A bone marrow transplant can replace the cells responsible for creating sickle cells with cells that produce normal hemoglobin. This is a very difficult and dangerous procedure that can lead to significant complications and death. This is why it is not routinely used to treat sickle cell anemia. Research is ongoing in attempts to have people with sickle cell anemia make normal blood cells. ...Read more
Blood: The genetic defect is in the hemoglobin molecule. ...Read more
No: Sickle cell trait is when a person has one mutated copy of the beta-hemoglobin gene and one normal copy. You always inherit the mutated hemoglobin from one of your parents. Thus, one parent always has at least sickle cell trait if the child has sickle cell trait. Therefore trait does not skip a generation. ...Read more
Genes: Sickle cell anemia occurs when someone has 2 sickle cell genes. Normal hemoglobin (hb) genes code for hb a. A sickle cell gene codes for hb s. Having 1 hb a gene & 1 hb s gene leads to sickle trait. This will have no symptoms, but has some health consequences. 2 genes for hb s leads to sickle cell anemia. To make things more complicated, there are other abnormal hb genes that can cause problems. ...Read more
Hemoglobinopathy: Patients with sickle cell anemia make an abnormal hemoglobin (hgb.). Normal HGB consists of paired protein chains (globin) and an iron containing part (heme). Patients with ssa inherit an abnormal beta-globin gene from each parent. Carriers have one normal beta-globin gene and one sickle beta globin gene. The carriers (trait) have no symptoms. ...Read more
Carrier vs. Affected: Sickle cell trait denotes being a carrier while sickle cell disease is someone who has the disorder. Sickling requires 2 genes. A person with the s gene and a normal gene would be a carrier and considered to have sickle cell trait. Someone who has s and s would be considered to have sickle cell disease and would likley be affected. ...Read more
Sickle cell Trait: can offer some protective value regarding severity of malarial disease. In a person who has sickle-cell trait – the red blood cells are destroyed prematurely before the Plamodium can reproduce. According to one study “Sickle cell trait provides 60% protection against overall mortality. Most of this protection occurs between 2-16 months of life, before the onset of clinical immunity..." ...Read moreSee 2 more doctor answers
Mutated gene: It is believed a single gene mutation occurred hundreds of years ago in a person in sub-Saharan Africa. When carried as one of a pair (trait), it seemed to confer resistance to malaria. It is transmitted as a recessive gene, meaning the normal gene next to it can do the work. When 2 defective genes are present, (sickle cell disease) the proper work is not done and the blood cells are defective. ...Read moreSee 1 more doctor answer
close to normal : Scd is many types , the most severe is the ss-disease . Even among patients with ss disease, there are risin the past it was about 4decades. With the improved care, prevention of serious complications by early diagnosis, blood transfusion, exchange for stroke patients and the use of hydroxy urea, life expectancy is becoming close to normal in many patients with scd who are under good medical care. ...Read moreSee 1 more doctor answer
My father has a rare type of sickle cell that affects his WBC's instead of RBC's. Is there any information on this type of Sickle Cell Trait?
Get better info: Your dad may have a white cell disorder but it has nothing to do with sickle cell trait which is a specific red cell disorder. You need to consult with your day and find out the proper name for his disorder before we can comment. A doc may have compared it to sickle cell trait to try to explain it. ...Read moreSee 1 more doctor answer
Most less severe: Most are less severe in sickle cell thalassemia, but depends. HbS/B(0)thal: similar to HbSS in severity maybe slightly less severe. HbS/B(+)thal: has 60% HbSS and 30% HbA, thus less severe than HbSS (sickle cell alone). HbS/A-thal: less severe than HbSS due to decreased HbSS amount. ...Read more
Who will have it bad: The trend currently is trying to find out why some people have very little problems and others can be so troubled by this disease. In some, the disease will cause strokes, lung problems, leg ulcers etc. If we knew early on who would have it bad, maybe treatments could be given earlier to prevent these problems. But not everyone has it bad, so it is hard to know. ...Read more
An inherited blood disease causing red blood cells to be sickle (curved) shaped instead of round. It shortens life expectancy, and can result in bacterial infections, painful swelling of the hands and feet, fever, arthritis, leg ulcers, fatigue, anemia, eye damage, and ...Read more
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