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Article ; Online: Unexpectedly Weak Anti-B in 2 Group O Pediatric Patients on Parenteral Nutrition and Disease Specific Supplemental Enteral Feeds.

Kaplan, Alesia / Gabert, Kimberly A / Yazer, Mark H

Laboratory medicine

2019  Volume 51, Issue 3, Page(s) 296–300

Abstract: Anti-A and anti-B antibodies are naturally occurring and develop from exposure to intestinal bacteria after age 4 to 6 months. In the laboratory, strong agglutination with A1 and B cells, or B cells only and A1 cells only, on reverse typing in a healthy ... ...

Abstract Anti-A and anti-B antibodies are naturally occurring and develop from exposure to intestinal bacteria after age 4 to 6 months. In the laboratory, strong agglutination with A1 and B cells, or B cells only and A1 cells only, on reverse typing in a healthy person with immunocompetence is expected for patients with ABO types O, A, and B, respectively. However, absent or weak anti-A and anti-B antibodies can be observed in some clinical scenarios, such as patients with immunodeficiencies, newborns, elderly patients, and patients who have recently received bone marrow transplants. In this article, we report the cases of 2 pediatric patients with group O blood type who were receiving total parenteral nutrition (TPN) and disease-specific enteral feeds and who have strong anti-A and absent/weak anti-B.
MeSH term(s) ABO Blood-Group System/immunology ; Antibodies/blood ; Child ; Child, Preschool ; Enteral Nutrition/methods ; Female ; Gastroschisis/diagnosis ; Gastroschisis/immunology ; Humans ; Infant ; Male ; Parenteral Nutrition/methods ; Urea Cycle Disorders, Inborn/diagnosis ; Urea Cycle Disorders, Inborn/immunology
Chemical Substances ABO Blood-Group System ; Antibodies
Language English
Publishing date 2019-09-19
Publishing country England
Document type Case Reports ; Journal Article
ZDB-ID 391758-7
ISSN 1943-7730 ; 0007-5027
ISSN (online) 1943-7730
ISSN 0007-5027
DOI 10.1093/labmed/lmz057
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