Author

Amber O’Connor

Oregon Health & Science University

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Microbiology· 1

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Assay:bulk RNA-seq· 1 Organism:human· 1 Research Focus:metabolism & bioenergetics· 1 Assay:metabolomics· 1 Approach:statistical model· 1

Frequent Co-Authors

Christopher A. GaulkeiD· 1 shared David A. Alvarado· 1 shared Liana V. Tsikitis· 1 shared Lydia Okyere· 1 shared Maura WalshiD· 1 shared Siting CheniD· 1 shared

Activity by Year

2026-2026 · peak 1/yr

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6 top collaborators · 15 mutual co-author links

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1 shared paperMicrobiology

Christopher A. GaulkeORCID

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1 paper

Recent·Most cited

MicrobiologybioRxivPreprintSep 9, 2026

Over-the-counter fiber supplementation associates with metabolic and microbial shifts in rectal mucosa

David A. Alvarado, Lydia Okyere, Amber O’Connor…·Christopher A. Gaulke

This study examines how over-the-counter fiber supplements affect the rectal mucosal environment by altering microbiota, SCFA levels, and host gene expression in patients with benign anorectal disease.

DOI 10.64898/2026.09.08.750137

humanmetabolomics