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Two cases of autoimmune neutropenia possibly induced by beta-lactam antibiotics in infants

S Taniuchi1, M Masuda, A Yamamoto

  • 1Department of Pediatrics, Kansai Medical University, Moriguchi, Osaka, Japan. taniuchi@takii.kmu.ac.jp

Journal of Pediatric Hematology/Oncology
|December 29, 2000
PubMed

Insights

Beta-lactam antibiotics, including flomoxef and cefotiam, may cause autoimmune neutropenia in infants. This condition, characterized by low white blood cell counts, can persist for months after antibiotic discontinuation.

Area of Science:

  • Pediatric Hematology
  • Clinical Pharmacology
  • Immunology

Background:

  • Neutropenia, a condition of low neutrophil count, can have various causes in infants.
  • Beta-lactam antibiotics are widely used for bacterial infections in pediatric populations.

Observation:

  • Two infants developed severe neutropenia following treatment with flomoxef and cefotiam, respectively.
  • Neutropenia persisted for 1-3 months even after the cessation of antibiotic therapy in both cases.

Findings:

  • Laboratory tests, including drug-induced lymphocyte stimulation test (DLST) and antibody analyses, suggested an autoimmune mechanism.
  • Evidence indicated that beta-lactam antibiotics may trigger the production of granulocyte autoantibodies, leading to autoimmune neutropenia.

Implications:

  • This report highlights a potential adverse effect of beta-lactam antibiotics in infants, necessitating careful monitoring.
  • Early identification and diagnostic workup are crucial for managing antibiotic-induced autoimmune neutropenia in pediatric patients.
  • Further research is warranted to elucidate the precise mechanisms and prevalence of this adverse drug reaction.

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