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Updated: Feb 15, 2026
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コホートプロファイル:ナイジェリアの乳幼児腸内細菌研究 (INBUGS-NG)
Chinenye Pascaline Akpulu1,2, Hafsat Maikudi Sada3, Hafsat Ahmed3
1University of Oxford, Oxford, UK chinenye.akpulu@linacre.ox.ac.uk.
BMJ open
|February 13, 2026
まとめ
ナイジェリアの乳幼児腸内細菌研究 (INBUGS-NG) は,幼児の腸内微生物群と抗生物質耐性遺伝子 (ARG) に,早期の生命要因がどのように影響するかを調査しています. 母親の抗生物質使用率が高く,母乳のみ授乳率が低いことが観察され,乳児の腸の健康に影響を与えました.
科学分野:
- 微生物学 微生物学とは
- ゲノミクスゲノミクスとは
- 公衆衛生は公衆衛生である.
背景:
- 幼少期の腸内微生物群は,乳児の健康と免疫発達にとって極めて重要です.
- 腸内微生物の組成と抗生物質耐性遺伝子 (ARG) の獲得に影響を与える要因を理解することは,特に多様な環境において不可欠です.
- ナイジェリアの乳幼児腸内細菌研究 (INBUGS-NG) は,アフリカの乳幼児腸内微生物研究における知識のギャップに対処しています.
研究 の 目的:
- 乳児の腸内微生物群の発達に与える影響について,出産方法,抗生物質の曝露,食事習慣,環境要因の影響を調査する.
- ナイジェリア北部で,赤ちゃんが最初の1年間,抗生物質耐性遺伝子 (ARG) を獲得することを特徴づける.
- アフリカの幼児集団からユニークなメタゲノム資源を確立する.
主な方法:
- ナイジェリアのカノで,90人の母子ダイアードを対象とした前向きの縦断的なコホート研究.
- 10つの時間点での集中的な便サンプル採取は,母乳の直腸スワンプ,母乳,環境サンプルと並行して行われます.
- REDCapと家計日記を用いた社会統計学的,臨床的,文化的データの収集.
- ショットガン・ロングリード・メタゲノミクス・シーケンシング (オックスフォード・ナノポール) を用いて,株レベルとプラズミドレベルのプロファイリングを行う.
主要な成果:
- 母親の産後抗生物質使用 (93.3%) と乳児の早期抗生物質使用 (28.9% 3ヶ月以内) の高頻度.
- 授乳のみの低い割合 (8%) と,一般的な早期の水補給.
- 帝王切開による出産は出産の25%を占め,平均妊娠年齢は38.5週であった.
- コホート保持の成功と,長年読まれたユニークなメタゲノムデータセットの生成.
結論:
- 高い抗生物質使用量や最適でない食事習慣など,幼児の早期の曝露は,ナイジェリア北部における幼児の腸内微生物群とARGの景観を著しく形作っている.
- INBUGS-NGの研究は,アフリカの文脈で幼児の腸内微生物群の動態を理解するための貴重なリソースを提供します.
- さらなる分析では,暴露とレジストームの動態の間の関連性を探求し,クロスコホート比較の可能性がある.
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