Abstract:
BACKGROUND:Cytomegalovirus (CMV) infections in very-low-birthweight infants can lead to serious clinical consequences. When CMV-related symptoms occur after transfusion, CMV transmission is often attributed to the transfusion products rather than to breast milk. However, it is sometimes difficult to distinguish between transfusion-transmitted and breast milk-transmitted CMV infections. PATIENT AND METHODS:A patient was born at 27 gestational weeks with a weight of 689 g. He was transfused with leukoreduced red blood cells (LR-RBCs), which were later found to be CMV seropositive and CMV DNA positive. He was also fed with CMV DNA-positive breast milk. Thereafter, he developed CMV disease with thrombocytopenia and jaundice. To determine the route of transmission, we analyzed the sequences of two variable CMV genes, UL139 and UL146, by direct sequence analysis. We also performed deep sequence analysis to determine whether there were polyclonal CMV strains in the LR-RBCs transfused. RESULTS:CMV DNA sequence-matching rates for the LR-RBCs and the patient's blood were 64.6% for the UL139 gene and 68.6% for the UL146 gene. In contrast, the sequences of these genes in the patient's blood were 100% matched with those in the breast milk. Furthermore, by deep sequence analysis, the CMV strain found in the patient's blood was not detected in the LR-RBCs transfused. CONCLUSION:The results indicate that the pathogenic CMV strain was transmitted through breast milk, which is consistent with the claims that transfusion-transmitted CMV infection due to leukoreduced blood products is uncommon.
journal_name
Transfusionjournal_title
Transfusionauthors
Yamagishi N,Furui Y,Koshinami S,Ichijo K,Shimizu Y,Hoshi Y,Gotanda Y,Miyakawa K,Uchida S,Tadokoro K,Nagai T,Satake Mdoi
10.1111/trf.13547subject
Has Abstractpub_date
2016-06-01 00:00:00pages
1305-1310issue
6eissn
0041-1132issn
1537-2995journal_volume
56pub_type
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