ISBB - Other Blood Group Flashcards
Produced by tissue cells and found in secretions
ISBT 007 / Lewis
Not well developed at birth
ISBT 007 / Lewis
Identify if Le (a-b-) is newborn, nonsecretor, or true Lewis phenotype
newborn
Identify if Le (a+b-) is newborn, nonsecretor, or true Lewis phenotype
nonsecretor
Identify if Le (a-b+) is newborn, nonsecretor, or true Lewis phenotype
true Lewis phenotype
Unique because ___ antigens are not intrinsic to RBCs but are type 1 glycosphingolipids that are passively absorbed on the RBC membrane plasma
ISBT 007 / Lewis
♥ Le (a-b-): found more frequently among ___
♥ _____: rare among whites and Africans but is more frequent among Asians
♥ _____: always present on nonsecretors; Lewis nonsecretor phenotype
♥ Africans
♥ Le (a+b+)
♥ Le(a)
Lack of expression of Lewis antigens has been demonstrated on the RBCs of patients with ___, ___, ___, ___
Cancer
Alcoholic
Cirrhosis
Viral and parasitic infections
Lewis causes mild ___; do not cause ___
HTR; HDN
ISBT 007
Lewis
ISBT 003
P1PK
P1PK: In their search for new antigens, they injected rabbits with human RBCs and produced an antibody, initially called ___, that divided human RBCs into two groups: ___ and ___
Anti-P
P+ and P-
___, ___, or ___ may be found on RBCs, lymphocytes, granulocytes and monocytes
P1, P, or Pk
P can be found on platelets, ___ and ___
Epithelial cells and fibroblasts
P and Pk have also been found in plasma as ___ and as ___ in hydatid cyst fluid
glycosphingolipids; glycoproteins
P antigen: poorly expressed at birth and may take up to ___ years to be fully expressed
seven
P antigen deteriorates rapidly on storage – older RBCs used as control for typing reagents can lead to false ___ result
negative
P antigen has been identified in hydatid cyst fluid (___), ___ (common earth worm) and Ascaris suum
E. granulosus
Lumbricoides terrestris
P1-like antigen has been found on: (Give 3)
Plasma
Droppings of pigeon and turtle doves
Eggwhite of turtle doves
Blacks have a stronger expression of (P1) than whites
True
___ marker of apoptosis in germinal center B cells, Burkitt lymphoma, and lymphoblastic leukemia
Pk antigen
A receptor for Shiga toxins which cause Shigella dysentery and E. coli-associated hemolytic uremic syndrome (HUS) and also provides protection against HIV infection of peripheral blood mononuclear cells
Pk antigen
Autoanti-P
- PNH (Paroxysmal nocturnal hemoglobinuria)
OR
- PCH (paroxysmal cold hemoglobinuria)
PCH (paroxysmal cold hemoglobinuria)
Anti-P1: observed in individuals infected with ____; have also been found in patients with fascioliasis (bovine liver fluke disease) and in bird handlers
Echinococcus granulosus