인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Reanalysing previously collected samples to address new research questions offers a time-efficient alternative to initiating new cohort studies. However, concerns remain regarding the stability of the faecal microbiome following repeated freeze-thaw (FT) cycles, which may introduce bias in downstream analyses. To this end, we investigated the effect repeated FT cycles had on 16 S rRNA gene sequencing and its ability to accurately measure the gut microbiome composition consistently. Our analysis showed that inter-individual sample differences consistently outweighed any effects introduced by FT. Differential abundance analysis with MaAsLin2 identified a limited number of significantly altered microbial genera after the first FT, when compared to the fresh, unfrozen material. The following second and third FT cycles showed no significant changes compared to the first FT cycle. Subsequent cycles (four to six) showed minor but progressive shifts in specific taxa. However, analysis with the more conservative method ALDEx2 showed no significant changes across any FT cycle. These findings support the reuse of stored faecal samples that have undergone a single thaw, suggesting minimal risk of compromising microbiome integrity.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.