ABOSystem Flashcards
Two major Blood Groups
ABO and Rh
Arrange from Most common to rare: A, B, O, AB
O, A, B, AB
Anti-A Dye
Bromocresol Blue
Anti B dye
Acriflavine Dye
Principle of blood grouping
Direct agglutination
Shelf life of A1 and B cells
7 days
Method used to break the interaction between the antigen and antibody
Elution
Interaction between soluble antigens and antibody to form insoluble complexes
Precipitation
Naturally occurring antibody
IgM
Abo stimulated in what Immunoglobulins?
IgG
True or False
ABO antibodies produce strong direct agglutination reaction during ABO testing.
True
attraction that a SPECIFIC antibody possessed to its corresponding antigen
Affinity
attraction/reaction between
MULTIPLE or MANY antigen and antibody reactions;
Avidity
True of False
The strength of reaction if greater in AVIDITY THAN AFFINITY
True
Antibody in blood types A and B is
IgM
Antibody in blood type O
IgG
It is the detectable expression of a certain gene on the genotype
Phenotype
unique sequence of DNA on the cell of a person
Genotype
Phenotype: A2 Genotype:?
A2O A2A2
Phenotype: A1B Genotype?
A1B
Phenotype: A1O Genotype?
A1
H & Se genes located at what chromosomes
Chromosomes 19
Reactivity of Anti H Anti Sera or Anti H lectin with ABO blood groups
O>A2>B>A2B>A1>A1B
Substance that is capable of stimulating an immune response, specifically activating lymphocytes
Antigen
Location of Antigen:
Binding site:
Solubility:
-Surface of RBCs
-Epitope
-insoluble
Location of Antibodies:
Binding site:
Solubility:
-In Plasma
-Paratope
-Soluble
Part of antigen attaches to antibody? and its other term
Epitope: AKA Antigenic Determinant
Part of antibody that recognises and binds to antigen
Paratope
This is exist when the result of red blood cells test (antigen) do not agree with the serum test (antibodies)
ABO Discrepancies
What group is associated with unexpected reactions in the reverse grouping due to weakly reacting or missing antibodies.
Group 1
What group/discrepancies are more common
Group 1
associated with unexpected reactions in the forward grouping due to weakly reacting or missing antigens.
Group 2
This group of discrepancies is probably the LEAST frequently encountered.
Group 2
These discrepancies between forward and reverse groupings are caused by protein or plasma abnormalities.
Group 3
What group in ABO Discrepancies result in rouleaux formation and pseudoagglutination?
Group 3
These discrepancies between forward and reverse groupings are due to miscellaneous problems.
Group 4
This is an example of what group in ABO Discrepancies?
Cold reactive autoantibodies
Group 4
This is an example of what group in ABO Discrepancies?
Patient has circulating RBCs of more than one ABO group due to RBC transfusion or marrow/stem cell transplant.
Group 4
This is an example of what group in ABO Discrepancies?
Unexpected ABO isoagglutinins
Unexpected non-ABO alloantibodies
Group 4
This is an example of what group in ABO Discrepancies?
Multiple myeloma “stacked coins appearance”
Group 3
This is an example of what group in ABO Discrepancies?
Waldenstrom’s Macroglobulinemia
Group 3
This is an example of what group in ABO Discrepancies?
Advance cases of Hodgkin Lymphoma
Group 3
This is an example of what group in ABO Discrepancies?
Acquired B phenomenon
Group 2
This is an example of what group in ABO Discrepancies?
Excess amount of blood group-specific soluble substances (BGSS)
Group 2
This is an example of what group in ABO Discrepancies?
Leukemia due to weakened A or B antigens
Group 2
This is an example of what group in ABO Discrepancies?
Newborns
Elderly patients
Leukemia or Lymphoma
Hypogammaglobulinemia
Group 1
This is an example of what group in ABO Discrepancies?
CHIMERISM
Group 1
A rare group, presence of two cell population in single individual like fraternal twins
CHIMERISM
Distribution and Function of IgA
Intravascular and Secretion
Protect mucus membranes
Distribution and Function of IgD
Lymphocytes surfaces, Unknown
Distribution and Function of IgE
Basophils Mast Cells Nasal Secretions
Protect against parasites
Distribution and Function of IgG
Intravascular and Extravascular
Secondary Response
Distribution and Function of IgM
Intravascular
Primary Response
Percent total of IgA in immunoglobulins
15%
Percent total of IgD in immunoglobulins
0.2%
Percent total of IgE in immunoglobulins
0.002%
Percent total of IgG in immunoglobulins
75%
Percent total of IgM in immunoglobulins
10%
Anti-A1 Lectin (A subgroups) derived from?
Dolichus Biflorus
Anti-B Lectin (B subgroups) derived from?
Banderaea Siimplicifolia
(Rarely performed because it is very rare)
Anti H Lectin (H subgroups) derived from?
Ulex Europaeus
Phenotype that lacks normal expression of the ABH antigens because of inheritance of the hh genotype.
Bombay
It represents the inheritance of a double dose of the h gene, producing the very
rare genotype hh.
Bombay
T/F
Bombay was first reported by Bhende in 1952.
True
T/F
The Bombay Phenotype is inherited as an autosomal recessive trait.
True
Rare phenotypes in which the RBCs are completely devoid of H antigens or have small amounts of H antigen present.
Parabombay