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Guillain-Barré Syndrome Caused by Influenza Virus

인플루엔자 바이러스로 인한 길랭-바레 증후군 1예

  • Choi, Hyun Gil (Department of Pediatrics, Kosin University College of Medicine) ;
  • Yeon, Gyu-Min (Department of Pediatrics, Kosin University College of Medicine)
  • 최현길 (고신대학교 의과대학 소아과학교실) ;
  • 연규민 (고신대학교 의과대학 소아과학교실)
  • Received : 2016.06.24
  • Accepted : 2016.09.10
  • Published : 2016.12.25

Abstract

$Guillain-Barr{\acute{e}}$ syndrome (GBS) is caused by antecedent infectious diseases in approximately two-thirds of cases. GBS is considered an autoimmune response. Among reported preceding infections, influenza virus is relatively rare. Several reports have identified antibodies related to GBS pathogenesis. However, no case report has described the detection of influenza virus in the cerebrospinal fluid (CSF) of a patient with GBS by polymerase chain reaction (PCR). Here we report the case of a 6-year-old girl who was diagnosed with influenza A 1 week prior and was treated with oseltamivir, after which she visited our hospital for headache and bilateral leg weakness that had persisted for 1 day. We diagnosed her with GBS based on physical and neurologic examination findings, CSF analysis, nerve conduction velocity test results, spinal magnetic resonance imaging, and detection of influenza A virus in her CSF by PCR. She was treated with intravenous immunoglobulin and her symptoms slowly improved. This case report suggests that GBS may be caused by influenza virus through penetration of the CSF.

길랭-바레 증후군은 약 3분의 2에서 선행 감염이 원인이 되며 면역반응 때문에 발병하는 것으로 알려져 있는데, 그 중 인플루엔자 바이러스는 비교적 드문 원인이다. 발병 기전과 관련된 항체들에 대한 보고들은 몇 차례 있었지만 길랭-바레 증후군 환자의 뇌척수액에서 인플루엔자 바이러스가 직접 검출된 증례는 없었다. 6세 여아가 내원 1주 전 인플루엔자 A로 진단된 후 oseltamivir를 복용하며 증상이 호전되었고, 내원 2일 전 두통 및 하루 전 양하지 위약감이 생겨서 응급실로 왔다. 신체 진찰, 뇌척수액 검사, 신경전도 검사, 척수 자기공명영상 등의 결과를 토대로 길랭-바래 증후군으로 진단하였고, 뇌척수액중합효소 연쇄반응 검사에서 인플루엔자 A 바이러스가 검출되었으며, 면역글로불린 정맥 투여 후 점차 증상이 호전되었다. 본 증례를 통하여 저자들은 인플루엔자 바이러스가 뇌척수액 내로 직접 침투한 것이 길랭-바레 증후군의 발생과 연관이 있을 것이라고 판단하며, 향후 그 기전에 대한 연구가 필요하겠다.

Keywords

References

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