急性重症肝炎を患った米国の小児におけるアデノ関連ウイルス2型
Venice Servellita1, Alicia Sotomayor Gonzalez1, Daryl M Lamson2
1Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, USA.
Nature
|March 30, 2023
まとめ
重度の小児性肝炎は,アデノ関連ウイルス2型 (AAV2) の共感染と関連していた. この研究では,AAV2が93%の肝炎症例で発見され,ヘルパーウイルスと共に重症疾患における役割を示唆した.
科学分野:
- ウイルス学
- 子供 の 感染症
- 分子生物学
背景:
- 2022年から,未知の起源の重症急性肝炎の世界的な発生が報告されました.
- ヒトアデノウイルス (HAdV) は以前,一部の患児で検出されたが,その原因は不明であった.
研究 の 目的:
- 子供の重度の急性肝炎のウイルス病原を調査する.
- アデノ関連ウイルス2型 (AAV2) と他のウイルスと小児性肝炎の関連性を決定する.
主な方法:
- 16人のHAdV陽性肝炎と113人の対照群のサンプルを分析した.
- PCRテスト,ウイルス濃縮ベースのシーケンシング,アグノスティックメタゲノムシーケンシングを使用した.
- 症例と対照群の間で,AAV2,HAdV,エプスタイン・バーウイルス,ヒトヘルペスウイルス6およびエンテロウイルスA71を含むウイルス検出率の比較.
主要な成果:
- アデノ関連ウイルスの2型 (AAV2) 配列は,肝炎症例の93%で検出され,対照群 (3. 5%) よりも著しく高かった.
- HAdV型41は,胃腸炎の対照群で一般的であったが,AAV2の併感染は,肝炎の症例と比較して少なかった.
- ヒトヘルペスウイルス (エプスタイン・バーウイルス,ヒトヘルペスウイルス6) とエンテロウイルスA71との共感染は,肝炎の症例 (85. 7%) で一般的であった.
結論:
- これらの発見は,AAV2が重症小児性肝炎の病原性において重要な役割を果たすことを示唆している.
- 疾患の重症度は,AAV2とヘルパーウイルスなどの共感染に関連しているようです.
- 子供におけるAAV2関連性肝炎の正確なメカニズムを明らかにするために,さらなる研究が必要である.
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