Demonstration of A antigen and A allele of ABO histo-blood group in nail in a case with the absence of A antigen and anti-A antibody in blood

✍ Scribed by Junko Michino; Yukiko Hata; Kazuhiro Matsui; Hisao Takizawa; Yoshihiko Kominato; Sachiyo Tabata; Kazuma Nishino; Satoshi Yasumura; Isao Kitajima

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 138 KB
• Volume: 7
• Category: Article
• ISSN: 1344-6223
• DOI: 10.1016/j.legalmed.2004.11.005

✦ Synopsis

We report a case with the inconsistency that the red blood cells lacked both A- and B-antigens while the serum showed reactivity with control B-red cells but not with A-red cells. A- and B-antigens were examined by serological blood typing and immunohistochemical staining, and DNA analyses were performed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), DNA sequencing, and hot-stop PCR. A-antigens were demonstrable in the nail of the subject by serological study and immunostaining. DNA analyses showed that the nail retained a small amount of A-allele comparing to that of O-allele. Those genomic analyses of ABO genes were useful for demonstration of A allele in the nail of an individual with the absence of A antigen on red blood cells and the corresponding antibody in serum.