Short tandem repeat (STRs) and sex specific Amelogenin analysis of blood samples from neurosurgical female transfused patients

Blood transfusion and its effects on DNA profiles of an individual is an important issue in the forensic context. In the present study, the effects of unfiltered whole male blood transfusion in seven female subjects were investigated by PCR-based assays on serial post-transfusion blood samples. PCR analysis of specific short tandem repeat (STR) primer pair to CSF1PO, TPOX, TH01, F13A01, FESFPS, vWA and sex specific Amelogenin loci for banding pattern of alleles generated from the pre- and post-transfusion of seven female recipients and their corresponding donors were studied. Pre- and post-transfusion DNA profiles of all the seven female recipients were found to be consistent with no evidence of the male and female donor genetic material. It is concluded that currently used PCR-based STRs and sex specific Amelogenin loci DNA profiling techniques in forensic science are reliable and informative for paternity and identity purposes in situations of transfusion of 1 or 2 U of unfiltered whole male and female blood (> 72 h old) to female recipient up to 24 h post-transfusion.

Restriction fragment length polymorphism and polymerase chain reaction: HLA-DQA1 and polymarker analysis of blood samples from transfusion recipients

The effect of blood transfusion on DNA profiles of an individual is a significant issue in the forensic context. In the present study, the effects of blood transfusion in 5 recipients were studied by performing restriction fragment length polymorphism and polymerase chain reaction HLA-DQA1 and Polymarker (LDLR, GYPA, HBGG, D7S8, and GC) assays (Roche Molecular Systems, Branchburg, NJ) on serial posttransfusion blood samples. Pretransfusion and posttransfusion DNA profiles of all 5 recipients were consistent with no evidence of the donor genetic material. Currently used DNA profiling techniques in forensic science are reliable and informative for paternity and identity purposes in situations involving transfusion of 1 or 2 U of blood up to 24 hours posttransfusion.

Differentiation of autologous ABO, RHD, RHCE, KEL, JK, and FY blood group genotypes by analysis of peripheral blood samples of patients who have recently received multiple transfusions

BACKGROUND

After multiple transfusions, the serologic typing of autologous blood group phenotypes is difficult, because of mixed RBC populations. The genotyping of ABO, Rh, Kell, Kidd, and Duffy systems could be used to determine autologous blood group antigen status.

STUDY DESIGN AND METHODS

Blood samples from patients and donors were analyzed before and after 26 multiple-transfusion events. An average of 6.9 non-WBC-reduced RBC units with an average age of 5.9 days were administered per transfusion event. The average period of blood sampling after transfusions was 5.3 days. All samples were serologically phenotyped for ABO, Rh, Kell, Kidd, and Duffy. Pretransfusion, posttransfusion, and buccal samples from patients were genotyped for the corresponding alleles by a uniform PCR sequence-specific primer protocol that allowed their simultaneous determination within 3 hours.

RESULTS

All posttransfusion samples exhibited mixed-cell populations of various blood group systems on serologic testing. Genotyping from peripheral blood produced results identical to the autologous blood group phenotypes, regardless of the amount of blood transfused or of the length of the sampling period after transfusion.

CONCLUSION

A fast and reliable PCR-sequence-specific primer DNA genotyping assay for simultaneous determination of autologous ABO, Rh, Kell, Kidd, and Duffy blood groups can be performed on peripheral blood samples, even though the patients have recently received multiple transfusions.