Tuesday, 22 January 2013

Gamma Globulin relevance in medical use



Human blood constitutes of many different substances that play a vital role in keeping the blood fresh and volatile. Blood proteins are also one of such protein found in blood plasma (component of blood) that are responsible of carrying out major body functions like transportation, regulation and to carry out smooth activities of immune system in the human body. The major blood proteins present in human plasma are Globulins, albumin, and fibrinogen. All the plasma proteins are synthesized in liver except for the Gamma Globulin, a sub type of globulin protein.

The globulins are a family of globular proteins that have higher molecular weights and water solubility values than the albumins. Some globulins are produced in the liver, while others are made by the immune system. The normal concentration of globulins in the blood is about 2.6-4.6 g/dL. Globulins are categorized into four categories Alpha 1, Alpha 2, Beta and Gamma Globulins and these can be distinguished from one another using the method of serum protein electrophoresis.

Here let’s discuss about the Human Immune Serum Globulins also called as Gamma globulin. They are also termed as immune globulins or antibodies constitute the major part of plasma globulin proteins. These types of globulins are produced by the mature B cells of the immune system and are used by the body's defense system against the foreign invaders like bacteria, infections and viruses. These globulins are further divided into five classes IgG, IgA, IgM, IgD and IgE. These globulins play a major role in defending the body against many external attacks so there necessity is crucial in the human body. But every individual must have normal range of Gamma Globulin present in their blood as decreased levels are indicative of an immune deficiency and elevated levels may lead to blood cancers like Multiple Myeloma and certain lymphomas.

Human Immune Serum Globulins or Gamma Globulin are extracted from the healthy donors and are preserved in liquid or powdered state to utilize them in aid to patients with lower level of immunity in their body. They are prescribed in many different forms as per the condition of the patient. There are many medical uses of these globulins which had developed today with latest advancement in technologies in medical world.
Some of the medical uses of Gamma Globulin:
Gamma globulin injections are usually given to the patients in an attempt to temporarily boost their immunity against various diseases or infections. As these globulins are the product derived from human blood, their injections along with blood transfusions and intravenous drug use can pass Hepatitis C to its recipients. Also, its therapy has proven to be a successful therapy for several medical conditions like hepatitis A, measles and the autoimmune disorder Kawasaki disease (abnormal inflammation of the blood vessels) in children. In addition to this gamma globulin therapy can make a kidney donor and recipient compatible regardless of blood and tissue match, and also can boost immunity for people who cannot produce gamma globulins naturally.
However, gamma globulin therapy comes along with a risk of negative side effects. Patients receiving this form of therapy may experience headache, backache, muscle or joint pain, and overall feelings of fatigue or illness. These effects decrease as the body becomes habituated to the therapy. According to researchers these may actually cause a stroke or heart attack in elderly patients with multiple risk factors. However, the Human Immune Serum Globulins packed with goodness can work wonders and act as a firewall against various immune deficiency diseases like HIV, AIDS and cancer etc.

Risks associated with Donating Plasma




Plasma is a vital substance of human blood that have many important functions associated with it like transportation of blood, preventing the human body against various infections and diseases, bleeding control and supply of various nutrients in the body. This substance also works wonders when it is extracted from the human blood and synthesized for making medicines and vaccines. Donating Plasma can benefit patients who need help in emergencies and critical situations like accidents and operations etc.

Donating Plasma not only benefits the recipients but also donors can profit by engaging in this donation act. Whenever a donor visits a donation center to give their donations they get paid for each of their sessions. These Plasma Donor Locations are paying the donors from $100 - $500 for each of their donation. However, the rates and terms differ with each location and medical body.

As plasma contains various nutrients, proteins and antibodies that can help the body to fight against various diseases its loss from the blood by Donating Plasma can have possible side effects. Though there are minimal complexities traced till date, all the Risks associated with Donating Plasma should be considered as well. Both the donors and as well the Plasma Donor Locations doctors must look for certain precautions before indulging in a donation.
Some of the precautions the donor must look into before going for a donation are given below:
·         The donor must have adequate rest before going for a donation. If the donor is tired it will imbalance his blood pressure levels which will affect the donation process.
·         They must be well hydrated prior to the session. Drink plenty of fluids before and after the donations will help.
·         They must have a healthy meal before going to the Plasma Donor Locations for giving their plasma. It is recommended to avoid red meat, fried foods and greasy items before the session as it can thicken your blood thus slowing down your donation process.
·         Should not consume alcohol if one is planning to donate plasma. They should also be away from drugs and addicts.
·         Must be healthy and must at least weight 110 pounds.
·         Should be 16 years and above.
·         Women should avoid frequent donations as who donate too often experience lower levels of hemoglobin in their blood.
·         Should not indulge in donating more than twice a week.
·         Must always visit a registered and professional Plasma Donor Locations. They must also make sure that the staff there is fully trained and can give a hassle free session with professional expertise.
·         Should consult a health care professional if any complications rise in the middle or after the donation.
·         Don’t forget to use the bathroom before you start to give plasma because you can’t stop the process in the middle.
·         Must clear the pre examination process to get eligible for donating.

The process of donating is same like donating blood. The only difference is that in this Plasmatherisis process the plasma is separated from the blood by a centrifuge, and then the blood is sent back to the donor's body. However taking needed precautions can help in simplifying the process and as well can rescue the donor from all the possible risk factors. There are no long term health risks of donating plasma as long as required steps are taken by the donor and the donation center. There will be a small mark on the arm where the needle was inserted, but this will disappear quickly if the liquid vitamin E is applied regularly on the area.

Hepatitis B Vaccines made from Human Plasma



Human blood constitutes of many different substances that play a vital role in keeping the blood fresh and volatile. Blood proteins are also one of such protein found in blood plasma (component of blood) that are responsible of carrying out major body functions like transportation, regulation and to carry out smooth activities of immune system in the human body. The major blood proteins present in human plasma are Globulins, albumin, and fibrinogen. All the plasma proteins are synthesized in liver except for the Gamma Globulin, a sub type of globulin protein.

The globulins are a family of globular proteins that have higher molecular weights and water solubility values than the albumins. Some globulins are produced in the liver, while others are made by the immune system. The normal concentration of globulins in the blood is about 2.6-4.6 g/dL. Globulins are categorized into four categories Alpha 1, Alpha 2, Beta and Gamma Globulins and these can be distinguished from one another using the method of serum protein electrophoresis.

Here let’s discuss about the Human Immune Serum Globulins also called as Gamma globulin. They are also termed as immune globulins or antibodies constitute the major part of plasma globulin proteins. These types of globulins are produced by the mature B cells of the immune system and are used by the body's defense system against the foreign invaders like bacteria, infections and viruses. These globulins are further divided into five classes IgG, IgA, IgM, IgD and IgE. These globulins play a major role in defending the body against many external attacks so there necessity is crucial in the human body. But every individual must have normal range of Gamma Globulin present in their blood as decreased levels are indicative of an immune deficiency and elevated levels may lead to blood cancers like Multiple Myeloma and certain lymphomas.

Human Immune Serum Globulins or Gamma Globulin are extracted from the healthy donors and are preserved in liquid or powdered state to utilize them in aid to patients with lower level of immunity in their body. They are prescribed in many different forms as per the condition of the patient. There are many medical uses of these globulins which had developed today with latest advancement in technologies in medical world.
Some of the medical uses of Gamma Globulin:
Gamma globulin injections are usually given to the patients in an attempt to temporarily boost their immunity against various diseases or infections. As these globulins are the product derived from human blood, their injections along with blood transfusions and intravenous drug use can pass Hepatitis C to its recipients. Also, its therapy has proven to be a successful therapy for several medical conditions like hepatitis A, measles and the autoimmune disorder Kawasaki disease (abnormal inflammation of the blood vessels) in children. In addition to this gamma globulin therapy can make a kidney donor and recipient compatible regardless of blood and tissue match, and also can boost immunity for people who cannot produce gamma globulins naturally.
However, gamma globulin therapy comes along with a risk of negative side effects. Patients receiving this form of therapy may experience headache, backache, muscle or joint pain, and overall feelings of fatigue or illness. These effects decrease as the body becomes habituated to the therapy. According to researchers these may actually cause a stroke or heart attack in elderly patients with multiple risk factors. However, the Human Immune Serum Globulins packed with goodness can work wonders and act as a firewall against various immune deficiency diseases like HIV, AIDS and cancer etc.

Monday, 31 December 2012

Red blood cell Alloimmunization in SCD patients



During pregnancy the antibodies and antigens production levels are traced to be abnormal in women. Such changes can affect the health of the mother and as well the new born along with many complications during pregnancy. RBC Alloimmunization is also one such condition which occurs due to the formation of antibodies to red blood cell antigens in the recipient from previous blood transfusions or a pregnancy. Sometimes this condition is also traced when the body is not exposed to foreign RBC antigens earlier before the transfusions.

The formation of antibodies in the human body differs extensively depending on the patient’s disease, history of transfusions, pregnancy and the rate of antigens production against the donors of different geographical locations. In order to trace the level of RBC Alloimmunization keeping the record of the antibody and antigen rates against the transfusions is important. Normally, the rate of red cell antibodies is estimated to be 20% or more in patients with transfusion dependent diseases like sickle cell anemia and thalassemia etc.

Sickle-cell disease (SCD) is an autosomal recessive genetic blood disorder with over dominance, characterized by red blood cells that assume an abnormal, rigid, sickle shape. Sickling decreases the cells flexibility and results in a risk of various complications. The sickling occurs because of a mutation in the hemoglobin gene during a transfusion. However, Red blood cell transfusions have reduced despair and mortality for patients with sickle cell disease. Transfusions can anyhow lead to RBC Alloimmunization.

Blood transfusion is an essential treatment for the patients with sickle cell disease (SCD). However, transfusions can lead to RBC Alloimmunization with serious complications for the patient. These antibodies produced in such conditions are often directed against antigens expressed on RBC’s of white persons, donors of western countries. However, finding such donors lacking those antigens can sometimes be difficult and identifying and characterizing the antibodies can be a time consuming job causing transfusion delays.

The most serious consequence of RBC Alloimmunization in SCD patients is the risk of developing a delayed hemolytic transfusion reaction (DHTR), which can be life taking. In many cases, the patient's hemoglobin level falls below the pre transfusion level indicating that the patient own RBCs are lysed in addition to hemolysis of the transfused RBCs. This condition is known as hyperhemolysis. Additional transfusions may provoke the hemolysis and further worsen the degree of anemia in the patients.

Not all patients develop all antibodies after exposure to transfused RBCs. This fact pertains not only to patients with SCD but also to other transfused recipients. RBC Alloimmunization cannot be entirely prevented except by transfusions from an identical twin or by autologous transfusions. Preventing RBC antibody formation is also not practical for most patients and, for man yit causes no serious complications. But prevention of RBC Alloimmunization is important in women of child bearing age, and for some patients at risk of serious haemolytic transfusion reactions. It is currently unknown whether RBC Alloimmunization rates differ depending on the presence or absence of clinical complications of SCD.

In conclusion, challenges remain for the diagnosis, prevention, and management of RBC Alloimmunization in SCD. Understanding the mechanisms and associated risk factors will aid in developing strategies to prevent and inhibit production of antibodies in transfused patients and to minimize its life threatening complications resulting from transfusions. Also, Immuno modulatory therapies, such as the use of immune cell depleting agents, costimulatory blockade, and cytokine blockade, may be effective in suppressing RBC Alloimmunization in patients. Tracing the conditions and taking timely precautions can help to recover from such complications during the pregnancy.