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Updated: May 15, 2026
08:44
Separation of Immune Cell Subpopulations in Peripheral Blood Samples from Children with Infectious Mononucleosis
Published on: September 7, 2022
Agranulocytosis after infectious mononucleosis
Tadafumi Yokoyama1, Yuko Tokuhisa, Akiko Toga
1Department of Pediatrics, Fukuiken Saiseikai Hospital, Wadanaka-machi, 7-1 Funahashi, Fukui, Fukui 918-8503, Japan. yokoyamaped@me.com
Summary
Aplastic anemia in a child following infectious mononucleosis (IM) was linked to anti-human neutrophil-specific antigen (HNA)-1 antibodies. These antibodies appear crucial in developing agranulocytosis after IM, as supported by this case and literature review.
Area of Science:
- Hematology
- Immunology
- Pediatrics
Background:
- Infectious mononucleosis (IM) is a common viral illness.
- Agranulocytosis is a rare but serious complication of IM.
- The exact mechanisms causing agranulocytosis in IM are not fully understood.
Observation:
- A 5-year-old boy developed agranulocytosis after IM.
- His serum contained antibodies against anti-human neutrophil-specific antigens (HNA)-1.
- This suggests an autoimmune basis for the observed agranulocytosis.
Findings:
- The presence of anti-HNA-1 antibodies was confirmed in the patient's serum.
- A review of similar cases indicated a pattern.
- Anti-HNA-1 antibodies are implicated in IM-associated agranulocytosis.
Implications:
- This case highlights a specific immunological pathway in IM-induced agranulocytosis.
- Understanding the role of anti-HNA-1 antibodies can aid in diagnosis and management.
- Further research into HNA-1 antibodies may reveal therapeutic targets for this condition.
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