The Lewis blood group system is located on what chromosome?
19
This blood group system is closely related to ABO system
Lewis
which blood group is formed at terminal sugars of type I precursor substance made by tissue cell in plasma?
Lewis
what are the four types of Lewis?
LeaLebLecLed
what are the only lewis antigens that are adsorbed on to the surface of the RBC?
LeaLeb
Lewis blood group is located primarily in what three parts of the body?
Saliva
Body fluids
Blood plasma
what is the form of lewis in saliva?
H2O sol glycoprotein
what is the form of Lewis in body fluids?
H2O sol glycoprotein
what is the form of lewis in blood plasma?
glycolipids
Lewis substance are secondarily _________ onto RBC membrane from plasma as glycolipids.
adsorbed
true or false
Lewis substance are not readily detectable on RBC
false
what are the two Lewis genes?
Le gene (dominant)
le gene (recessive)
The amount of Lewis antigen detectable is influenced by what three genes?
Secretor genes (SeSe, Sese)
ABH genes (HH, Hh)
Lewis genes (LeLe, Lele)
ABH, Sese, Lele genes are inherited __________.
independently
what is the gene that affects what Lewis substance is produced.
Se gene
If person has the Lewis gene it adds _______ to second sugar from the end.
fucose
what is the antigen produced when fucose is added to the second sugar from the end?
Lea antigen
If a person is a secretor the H gene adds _______ to terminal sugar of precursor substance.
fucose
If a person is a secretor the H ene adds fucose to terminal sugar of precursor substance forming what antigen?
Leb antigen
if a person has the phenotype Le(a-b+) what saliva antigens are produced?
LeaLeb
this system is markedly decreased during pregnancy.
Lewis
Le(a=b+) women may be what phenotype during pregnancy.
Le(a=b=)
what are the three types of lewis antibodies?
Anti-LeaAnti-LebAnti-Lea and Leb
Pregnant women frequently form _______ antibodies.
lewis
True or false
Lewis is a naturally occuring antibody.
true
true or false
Lewis antibodies can cause HDN
false
Lewis exhibits it strongest reaction in _______.
saline
Lewis antibodies react best at what temperature?
Cold (4oC)
room temp
Lewis reaction can react on all phaes to inclued 37oC even though it is what class?
IgM
What is the antibody seen in Le(a=b=) people but not seen in Le(a=b+) people?
Anti-Lea
this antibody is seen in Le(A=b=) people who produce Anti-Lea but is rarely seen in Le(a+b=) people.
Anti-Leb
Which lewis antibodies shows no reaction with cord cells?
Anti LebAnti-Lea+Leb
this antibody is seen in Le(a=b=) persons and reacts with both Lea and Leb antigens
Anti Lea+Leb
the I/i blood group was discovered in 1956 by who?
Dr. alexander Wiener
this antigen is thought to be composed of subgroups to form a mosaic of determinants.
I/i antigen
what are the three I determinants?
IF-Fetal
IT-transitional
ID-Developed
This I antigen if found in greatest amounts on cord RBCs and found in small amounts on adult RBCs.
IF-Antigen
what I antigen is the precursor to Id antigen
If antigen
This is the intermediate conversion of IF to ID antigen.
IT
Antibody It reacts most weakly with what RBC?
Adult i RBC
It antigen reacts strongly with what RBC?
cord i RBC (IF)
this antigen is formed from the conversion of cord i antigen and found only in adult RBC.
Id antigen
most adults phenotype as what I antigen?
I+i+/=
what is the rare adult I phenotype?
I+/=, i+ (i adult)
i adults is when a person has a small amount of I antigen, frequency is less than 1 in ________.
10,000
what is the newborn I phenotype of Cord cells?
I+/=, i+
newborn I phenotype may have a small amount of I antigen in what form?
If
how long does it take for i to be converted to I antigen in adults?
18 months
true or false
amount of I varies between different I+ persons.
true
I/i antigen may change in what three diseases?
Thalassemia
Anemia
Leukemia
What are the five locations of I/i antigen?
Red Cells
Leukocytes
Lymphocytes
Platelets
Body fluids
what is the antigen that may be a precursor to ABG and Lewis substances?
I/i System
ABH and Lewis substances created by addition of sugars to what antigen?
I
what people have more I antigens than other?
Bombay
what class of antibody are the I/i antibodies?
IgM
what are the two I antibodies?
anti-I
Anti-i
Anti-I is a non-specific _____ agglutinin.
cold
this antibody is most often a _____-antibody in I+ people.
auto
true or false
all normal serum contains some anti-I that is active at low temp and causes no in vivo problems.
true
Anit-I interferes with what three in vitro testings?
compatibility testing
antibody studies
ABO reverse grouping if done at low temp
Anti-I does not prevent persons from receiving donor units that have what antigen?
I
Anti-I will hemolyze blood if warmed to what temp?
40oC
ISO anti-I in i adults should receive blood from what phenotype?
i=
use of autoabsorption and prewarming techniques should be used for this antibody because it may mask the presence of other more significant antibodies.
Anti-I
what is the optimum temperature for Anti-I?
1-6oC
Anti-I activity is enhanced by what protein?
Albumin
Anti-I complement binding is detected in what phase?
AHG phase
true or false
Anti-I is naturally occuring
true
what are four conditions that Anti-i may be seen in?
alcoholic cirrhosis
Reticulosis
Infectious mononucleosis
Leukemia
This I antibody has weak reactions with adult and autologous RBC.
Anti-i
Anti-i has strong reactions with what RBCs?
cord
This cold antibody has the same serological properties as Anti-I.
Anti-i
Anti-P1 is a _________ antibody.
common
how much of P2 population will form Anti-P1 naturally?
2/3
what percent of P2 pregnant woemn will form Anti-P1 naturally.
90%
Anti-P is a _____ naturally occurring IgM antibody.
rare
Anti-P is saline reactive at room temp but funtions optimumally at what temp?
1-6oC
Anti-P1 serum should be transfused with what?
P2
PCH is caused by auto antibody of what specificity?
Anti-P
Anti-P seen in PCH is _____ complement fixing.
cold
what is the name of the autoantibody in PCH?
Donath Landsteiner (DL)
in PCH, the DL antibody is usually what class?
IgG
DL antibody is associated with what five disease states?
syphilus
mumps
measles
infectious mononucleosis
pneumonia
what are the six Kell antigens?
K (kell)
k (Cellano)
Kpa (Penny)
Kpb (rautenberg)
Jsa (Sutter)
Jsb (Mathew)
The kell blood group system was discovered in 1946 by who?
RRA (Robin) Coombs
The Kell blood group was discovered in a woman (Mrs. Kellaher) whose baby was suffering from what disease?
HDN
What three Kell antigens occur in 99.9% of people?
k (cellano)
Kpb (rautenberg)
Jsb (matthews)
What percent of whites and blacks have the K (Kell) antigen?
Whites: 9%
Blacks: 3.5%
What percent of whites and blacks have the Kpa (Penny) antigen?
Whites: 2%
Blacks: 0.1%
what percent of whites and blacks have the Jsa antigens?
Whites: 0.1%
Blacks: 20%
the Kell system is composed of both ____ and _____ incidence antigens.
high
low
what two Kell antigens are very antigenic?
K (Kell)
k (Cellano)
this blood system is second in antigenicity only to ABO and RhoD
Kell
what percent of K negative patients who receive K positive blood produce Anti-K antibodies?
10%
the phenotype of what blood group is divided into three pairs as determined by allelic paired genes?
Kell system
what are the four phenotypes of the Kell system?
Kk
KpaKpbJsaJsbK0
this is a very rare phenotype where red cells lack all antigens produced by Kell system genes.
K0
This is a phenotype lack of the Kx and Km and marked depression of other Kell antigens. RBC's are irregular shapes and protrusion.
McLeod Syndrome
Individuals with McLeods Syndrome show progressive forms of what three things?
muscular dystrophy
Cardiomegaly
neurologic disorders of areflexia which progress to choreiform
This Kell associated disease is known as a childhood disease where leukocytes are unable to kill certain bacteria.
Chronic Granulomatous Disease (CGD)
This disease is thought be be caused by a lack of what antigen, especially in children.
Kx
this is a fairly common antibody due to antigenicity of K antigen.
Anti-K
most donor blood is negative for which two Kell antibodies?
Kpa=Jsa=
Kell antibody is most often what class of antibody
IgG
Kell antibodies sensitize red cells at what temperature?
37oC
what effect does enzyme treatment have on Kell?
not enhanced
this system is second to Rh system in HDN.
Kell
in what year was the Duffy blood group discovered in the patient Mr. Duffy?
1950
Fya and Fyb effects what percent of people?
Fya: 60%
Fyb: 80%
what is the rare duffy phenotype?
Fya=b=
what are the three other duffy antigens?
Fy3Fy4Fy5
what effect does enzyme treatment have on duffy antigens.
destroys them
The duffy antigens show some ______.
dosage
what duffy phenotype shows resistance to malaria (Plasmodium vivax) merozites?
Fya=Fyb=
Each person has ___ duffy genes?
two
What are the two Duffy antigens?
Anti-FyaAnti-Fyb
Duffy system antibodies are ________ immune antibodies.
red cell
Duffy system antibodies are what class?
IgG
Duffy system antibodies are reactive at what phase?
Coombs
Duffy system antibodes are capable of cuasing what disease states?
transfusion reactions
HDN
This blood group was discovered in 1951 in an infant suffering from HDN.
Kidd
what was the patients name that the Kidd blood group was discovered in?
John Kidd
what percent of people have the Jka and Jkb antigens?
Jka: 77%
Jkb: 73%
What Kidd gene is a silent Amorph?
Jk
what Kidd genese are codominant?
JkaJkb
what is the Kidd phenotype that is extremely rare in American and European populations?
JKa=b=
The Jka=b= phenotype is seen in what ethnicities?
Filipino
Asian
Polynesian
Jka=b= is a ___________ does of rare Jk gene
homozygous
Kidd antigens show marked ______.
Dosage
what reactions would you expect in a patient with Anti-Jka who's genotype is:
JKaJka:
JkaJkb:
JkaJka: 4+
JkaJkb: 2+
Kidd antibodies are what class of antibody which react at what temp?
IgG
37oC
Kidd antibodies are weak reacting antibodies that are detected in what phase?
AHG
what effect does enzyme treatment have on Kidd antibodies?
enhanced
these antibodies deteriorate rapidly in vivo and in vitro.
Kidd
Kidd antibodies may cause HDN and _______ transfusion reaction.
delayed
what are the five antigens seen in the MNS blood group?
M
N
S
s
U
This was the second blood group discovered after the ABO group.
MNS system
the MNS system was discovered in 1927 by who?
Dr. Landsteiner
What is the Frequency of the M antigen?
78%
What is the frequency of the N antigen?
72%
What is the frequency of the S (Big) antigen?
55%
what is the frequency of the s (small) antigen?
89%
What is the frequency of the U antigen?
99.9%
in the MNS system, a person inherits one __ or ___ gene and one __ or __ gene from each parent?
M or N
S or s
in the MNS system the __ gene pair is linked to the __ gene pair.
MN
Ss
The MNS system consists of ___________ alleles.
codominant
The MNS system shows what kind of dosage?
marked dosage
_____ cells react stronger with Anti-M than M+N+.
M+N=
what is the effect of enzyme treatment on the MNS antigen?
destroyed
what are the three enzymes that will destroy MNS antigens?
Ficin
Papain
Bromelin
MNS antigens have what acid in their structure?
Sialic acid
True or false
Anti-M/Anti-N antibodies are naturally occurring IgM.
true
Anti-M/Anti-N has a component of ____.
IgG
reactions of what antibodies are enhanced by lowering the pH to 6.5?
Anti-M/Anti-N
anti-s and Anti-S are reactive in what phase of testing?
AHG
Anti-S and is rarely a naturally occurring ___ class antibody, it is mostly an allo-antibody of ___ class.
IgM
IgG
What antibody of the Ss system is a rare, red cell immune IgG?
Anti-s
This antibody is seen in renal dialysis patiend due to machine sterilized with formaldehyde.
Anti-N
There is a ________ frequency of anti-N.
increased
Anti-N may be seen in __ and ___ patients.
N+N=
this antibody is implicated in rejection of donor kidneys when transplanted cold.
Anti-N
Source of stimulis for Anti-N is _________.
unknown
This blood group was discovered in 1945 in a patient named Lutheran.
Lutheran blood group
What are the two main antigens in the Lutheran blood group?
LuaLub
What are the four low incident Lutheran antigens?
LuaLu9
Lu10
Lu14
what is the frequency of the Lua and Lub antigens?
Lua: 8%
Lub: 99.8%
true or false
Lua and Lub are not codominant
False
The genes of the Lutheran system are linked to what genes of the ABH system?
secretor
this blood group was the first example of autosomal linkage in humans.
Lutheran
what is the frequency of the phenotype Lua+b=?
0.15%
What is the frequency of the phenotype Lua+b+?
7.5%
What is the frequency of the phenotype Lua=b+?
92%
What is the rare phenotype in the lutheran system?
Lua=b=
the _______ of lutheran antigens varies between people.
strength
Lutheran antigens are not fully ________ at birth.
developed
what is the effect of enzyme treatment on Lutheran antigens?
destroyed
this lutheran phenotype may form antibody against any high incident antigens.
Lua=b=
Anti-Lua is a naturally occurring IgM antibody that shows what type of reactions?
mixed field
Anti-Lua is saline active, mostly at what temperature?
room
Most Anti-Lub antibodies are ______ red cell immune antibodies
rare
Anti-Lub are what class of antibodies?
IgG
Antigens in this system function in self/non-self discrimination.
HLA system
what are the four locations of HLA system antigens?
Immature NRBCs
Body tissue cells
Leukocytes
Platelets
Leukocytes carry what six leukocyte antigens?
A
B
H
P
P1I
Antigens and genes in the HLA system are designated by what?
letters HLA
These are antigens produced by a series of closely linked codominant alleles located on Human Chromosome 6.
HLA
HLA system genes are located in what three classes fot he MHC?
Class I
Class II
Class III
MHC has how many possible haplotypes?
four
What are the four HLA antigens tested for organ transplantation?
ABO
HLA-A
HLA-B
HLA-DR
Bone Marrow Transplant candidate donors and recipients are tested for what five HLA antigens?
HLA-A
HLA-B
HLA-C
HLA-DR
HLA-DQ
in what Blood group may platelet refractoriness develop?
HLA
use of this blood group in paternity testing can rule out 90-95% of falsely accused males?
HLA
Ankylosing Spondylitis is associated with what blood group?
HLA
HLA antibodies are what class?
IgG
HLA antibodies are found in what four people?
Receive multiple transfusion
History of pregnancy
Received leukocyte or platelet transfusion
Had organ transplants
What are three problems caused by Leukocyte antibodies?
Febrile transfusion reactions
Destruction of donor leukocytes or platelets
Rejection of donor transplanted organs
This determines the antigen present on the RBC.
phenotyping
Phenotyping tests for agglutination of ____ with commercially prepared reagent antisera.
RBC
What type of cells should be used as a control for phenotyping?
heterozygous
What is the only IgM antibody that will react in all phases of Coombs testing?
Anti-Le
What are the seven IgM antibodies?
I
P
N
LeaLebLuaM
What class of antibodies can cross the placenta and cause HDN?
IgG
What is the enzyme treatment made from Figs latex?
ficin
what is the enzyme treatment made from papaya latex?
papain
Waht ist he enzyme treatment that is extracted from pineapple?
bromelain
Enzyme treatment destroys what three antigen systems?
Duffy
MNSs
Lutheran
Enzyme treatment enhances what five antibodies?
Rh
Kidd
P1
Lewis
I
What is the remedy for HLA?
leukocyte reduced blood products
What blood group system will cause febrile transfusion reactions?
HLA
Phenotype controls must be heterozygous to detect what?
weak antibodies that show dosage
What are the four complement binding blood groups?
lewis
I
Duffy (some)
kidd
what four blood groups may or may not bind complement?
P
Kell
S
Lu
What blood group will not bind complement?
MN
Author
corbin19
ID
36313
Card Set
Other Major Blood Group Systems 8.6
Description
Blood Bank Unit 8.6 Other Major Blood Group Systems