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A blood type is a classification of blood, based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells (RBCs). These antigens may be proteins, carbohydrates, glycoproteins, or glycolipids, depending on the blood group system. Some of these antigens are also present on the surface of other types of cells of various tissues. Several of these red blood cell surface antigens can stem from one allele and collectively form a blood group system.
Rh disease is a type of hemolytic disease of the fetus and newborn (HDFN). HDFN due to anti-D antibodies is the proper and currently used name for this disease as the Rh blood group system actually has more than 50 antigens and not only the D-antigen. The term "Rh Disease" is commonly used to refer to HDFN due to anti-D antibodies, and prior to the discovery of anti-Rho(D) immune globulin, it was the most common type of HDFN. The disease ranges from mild to severe, and occurs in the second or subsequent pregnancies of Rh-D negative women when the biologic father is Rh-D positive.
Sir Cyril Astley Clarke, KBE, FRCP, FRCOG, (Hon) FRC Path, FRS was a British physician, geneticist and lepidopterist. He was honoured for his pioneering work on prevention of Rh disease of the newborn, and also for his work on the genetics of the Lepidoptera.
Hemolytic disease of the newborn, also known as hemolytic disease of the fetus and newborn, HDN, HDFN, or erythroblastosis fetalis, is an alloimmune condition that develops in a fetus at or around birth, when the IgG molecules produced by the mother pass through the placenta. Among these antibodies are some which attack antigens on the red blood cells in the fetal circulation, breaking down and destroying the cells. The fetus can develop reticulocytosis and anemia. The intensity of this fetal disease ranges from mild to very severe, and fetal death from heart failure can occur. When the disease is moderate or severe, many erythroblasts are present in the fetal blood, earning these forms of the disease the name erythroblastosis fetalis.
Sir Robert Geoffrey Edwards was a British physiologist and pioneer in reproductive medicine, and in-vitro fertilisation (IVF) in particular. Along with obstetrician and gynaecologist Patrick Steptoe and nurse and embryologist Jean Purdy, Edwards successfully pioneered conception through IVF, which led to the birth of Louise Brown on 25 July 1978. They founded the first IVF programme for infertile patients and trained other scientists in their techniques. Edwards was the founding editor-in-chief of Human Reproduction in 1986. In 2010, he was awarded the Nobel Prize in Physiology or Medicine "for the development of in vitro fertilization".
Rho(D) immune globulin (RhIG) is a medication used to prevent RhD isoimmunization in mothers who are RhD negative and to treat idiopathic thrombocytopenic purpura (ITP) in people who are Rh positive. It is often given both during and following pregnancy. It may also be used when RhD-negative people are given RhD-positive blood. It is given by injection into muscle or a vein. A single dose lasts 12 weeks. It is made from human blood plasma.
Alexander Solomon Wiener, was an American biologist and physician, specializing in the fields of forensic medicine, serology, and immunogenetics. His work led to the discovery of the Rh factor in 1937, along with Karl Landsteiner, and subsequently to the development of exchange transfusion methods that saved the lives of infants with hemolytic disease of the newborn. He received a Lasker Award for his achievement in 1946.
Ronald Finn was a medical researcher born in Liverpool, England. His research work contributed to advancing knowledge on the Rhesus factor. He died of cancer of the stomach.
Hemolytic disease of the newborn (anti-Kell1) is the second most common cause of severe hemolytic disease of the newborn (HDN) after Rh disease. Anti-Kell1 is becoming relatively more important as prevention of Rh disease is also becoming more effective.
Hemolytic disease of the newborn (anti-Rhc) can range from a mild to a severe disease. It is the third most common cause of severe HDN. Rh disease is the most common and hemolytic disease of the newborn (anti-Kell) is the second most common cause of severe HDN. It occurs more commonly in women who are Rh D negative.
The term human blood group systems is defined by the International Society of Blood Transfusion (ISBT) as systems in the human species where cell-surface antigens—in particular, those on blood cells—are "controlled at a single gene locus or by two or more very closely linked homologous genes with little or no observable recombination between them", and include the common ABO and Rh (Rhesus) antigen systems, as well as many others; 44 human systems are identified as of December 2022.
The Rh blood group system is a human blood group system. It contains proteins on the surface of red blood cells. After the ABO blood group system, it is the most likely to be involved in transfusion reactions. The Rh blood group system consisted of 49 defined blood group antigens in 2005. As of 2023, there are over 50 antigens among which the five antigens D, C, c, E, and e are the most important. There is no d antigen. Rh(D) status of an individual is normally described with a positive (+) or negative (−) suffix after the ABO type. The terms Rh factor, Rh positive, and Rh negative refer to the Rh(D) antigen only. Antibodies to Rh antigens can be involved in hemolytic transfusion reactions and antibodies to the Rh(D) and Rh antigens confer significant risk of hemolytic disease of the newborn.
Philip Levine was an immuno-hematologist whose clinical research advanced knowledge on the Rhesus factor, Hemolytic disease of the newborn (HDN) and blood transfusion.
Hemolytic disease of the newborn (anti-RhE) is caused by the anti-RhE antibody of the Rh blood group system. The anti-RhE antibody can be naturally occurring, or arise following immune sensitization after a blood transfusion or pregnancy.
James Christopher Harrison, also known as the Man with the Golden Arm, is a blood plasma donor from Australia whose plasma contains antibodies against RhD which are used in making a treatment for Rhesus disease. One of the founding donors of New South Wales' (NSW) Rh Program, he regularly donated until, on 11 May 2018, he made his 1,173rd donation – his last, as Australian policy prohibits blood donations from those past age 81.
Sir Michael Houghton is a British scientist and Nobel Prize laureate. Along with Qui-Lim Choo, George Kuo and Daniel W. Bradley, he co-discovered Hepatitis C in 1989. He also co-discovered the Hepatitis D genome in 1986. The discovery of the Hepatitis C virus (HCV) led to the rapid development of diagnostic reagents to detect HCV in blood supplies, which has reduced the risk of acquiring HCV through blood transfusion from one in three to about one in two million. It is estimated that antibody testing has prevented at least 40,000 new infections per year in the US alone and many more worldwide.
Vincent J. Freda was an American obstetrician who shared the 1980 Lasker-DeBakey Clinical Medical Research Award for pioneering work on the rhesus blood group system, the role of rhesus D antibodies in the causation of Rh disease and the prevention of Rh disease. He graduated from Columbia University and the New York University School of Medicine.
Rh factor testing, also known as Rhesus factor testing, is the procedure of determining the Rhesus D status of an individual.
Ruth Renter Darrow (1895–1956) was an American pathologist who was the first to identify the cause of hemolytic disease of the newborn (HDN). In 1938, three years prior to the discovery of antibodies against the Rh antigen, Darrow correctly hypothesized that the disease was caused by destruction of red blood cells due to antibodies in the mother's blood. Darrow's research was inspired by her personal experiences with the disease.
Robert John Walsh was an Australian medical scientist and geneticist. He set up the New South Wales Red Cross Blood Transfusion Service, serving as its inaugural Director for twenty years from 1946 to 1966. From 1973 to 1982, he was the Dean of the Faculty of Medicine at the University of New South Wales. His research activities covered a wide range, including iron metabolism, blood groups, genetic influences on diseases, and improving techniques and equipment for collecting, processing, and transporting blood and its products. In 1982 he was awarded Australia's highest civilian honour, Companion of the Order of Australia, for his services to medicine.
References
- 1 2 "A vial of human serum, an ice box and an illegal flight: how an Australian doctor saved millions of babies' lives". ABC News. 2022-11-01. Retrieved 2022-11-02.
- ↑ "Vaccine for preventing Rh incompatibility in newborns". Albert and Mary Lasker Foundation. Retrieved 4 September 2016.
- ↑ Thompson, Gilbert (2014). Pioneers of Medicine Without a Nobel Prize. World Scientific. p. 163. ISBN 9781783263868.
- ↑ "Honorary Companion of the Order of Australia" (PDF). Commonwealth of Australia Gazette. Retrieved 20 July 2024.
