Association of human platelet alloantigen 1 through 5 polymorphisms with ischemic stroke.
Polymorphisms in human platelet alloantigen (HPA)-1 and HPA-3 (GPIIb/IIIa), HPA-2 (GPIb/IX), HPA-4 (GPIIIa) and HPA-5 (GPIa/IIa) were investigated in 216 stroke patients and 318 matched control subjects. HPA genotyping was done by the polymerase chain reaction method using sequence-specific primers. Higher frequencies of the HPA-1 a/b (p < 0.001) and HPA-5 a/b (p < 0.001) allele, together with HPA-1 b/b, HPA-5 a/b and HPA-5 b/b genotypes were seen in patients, which was confirmed by regression analysis after controlling for a number of confounding variables. Furthermore, HPA-1 b/b and HPA-5 b/b were significantly associated with the extent of neurological symptoms, and with the recurrence of stroke. Both susceptible (1a/ b -2a/a-3a/ b -4a/a-5a/ b ) and protective (1a/a-2a/a-3a/a-4a/a-5a/a; 1a/a-2a/a-3a/ b -4a/a-5a/a; 1a/ b -2a/a-3a/a-4a/a-5a/a; 1a/ b -2a/a-3a/ b -4a/a-5a/a) HPA genotypes were identified. This is the first evidence demonstrating differential association of the common 5 HPA gene variants with stroke, with HPA-1b and HPA-5b representing strong genetic risk factors.
Saidi
Sarra
S
Research Unit of Hematological and Autoimmune Diseases, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia.
Mahjoub
Touhami
T
Slamia
Lamia B
LB
Ammou
Sofyan B
SB
Al-Subaie
Abeer M
AM
Almawi
Wassim Y
WY
D000368:Aged; D016824:Antigens, Human Platelet / Q000235:genetics*; D002545:Brain Ischemia / Q000150:complications / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010980:Platelet Membrane Glycoproteins / Q000502:physiology; D011110:Polymorphism, Genetic / Q000235:genetics*; D012008:Recurrence; D020521:Stroke / Q000235:genetics*
D016824:Antigens, Human Platelet; D010980:Platelet Membrane Glycoproteins