Evidence map›Paper›PMID 40842875›Full record

ArticleNature electronics2025

Continuous Biochemical Profiling of the Gastrointestinal Tract Using an Integrated Smart Capsule.

Jihong Min, Hyunah Ahn, Heather Lukas, Xiaotian Ma, Rinni Bhansali, Sung-Hyuk Sunwoo, Canran Wang, Yadong Xu, Dickson R Yao, Gwangmook Kim and 5 more

Abstract read
In one paragraph

Article in Nature electronics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed.

  1. Trial
  2. Review
  3. Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Article
  9. Tissue-bioelectronics interfaces.Chemical Society reviews · 2026
    Review
  10. Article
  11. Article
  12. Review
  13. Nanomaterial-Based Inkjet Printing for Electrochemical Sensing.Small (Weinheim an der Bergstrasse, Germany) · 2026
    Review
  14. Physical Intelligence in Small-Scale Robots and Machines.Advanced materials (Deerfield Beach, Fla.) · 2026
    Review
  15. Mussel-Bioinspired Edible CaAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  16. Review
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors.

Jihong MinAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Hyunah AhnAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Heather LukasAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Xiaotian MaAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Rinni BhansaliAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Sung-Hyuk SunwooAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Canran WangAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Yadong XuAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Dickson R YaoAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Gwangmook KimAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Zhaoping LiDivision of Clinical Nutrition, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
Tzung K HsiaiDivision of Cardiology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
Azita EmamiAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.
Hee-Tae JungDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea.
Wei GaoAndrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125, USA.

Funding

Laser-Engraved Wearable Sweat Sensors to Detect and Monitor Cardiometabolic DiseaseR01HL155815 · NHLBI · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI GAO, WEI · 2021 to 2025
$2.0M
Cutaneous uric acid and metabolite monitoring to improve individual response to pharmaceutical and dietary treatment in patients with goutR21DK132666 · NIDDK · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI FITZGERALD, JOHN D, GAO, WEI · 2022 to 2023
$461k
NHLBI NIH HHS R01 HL155815NIDDK NIH HHS R21 DK132666
6 · The paper itself

Abstract

The gastrointestinal tract contains a wealth of chemical information that can be used to decipher the health of the digestive and nervous systems. Traditional methods of analysis, such as fecal analysis and biopsies, are invasive, costly, and incapable of providing real-time metabolic and hormone profiling across the gastrointestinal tract. Commercial ingestible capsule sensors have been developed, but only monitor basic markers, such as pH and pressure, neglecting detailed chemical analysis. Here we report an integrated smart capsule that can simultaneously detect a spectrum of biochemical markers, including electrolytes, metabolites, and hormones. The capsule, which is termed PillTrek, is 7 mm in diameter and 25 mm in length, and houses a miniaturized wireless electrochemical workstation capable of executing a range of electrochemical measurement techniques (potentiometry, amperometry, voltammetry, and impedimetry), allowing it to interface with a variety of electrochemical sensors and detect various parameters in the gut. Using an array of sensors (serotonin, glucose, pH, ionic strength, and temperature), we illustrate the capabilities of the system in vitro and in vivo in animal studies involving rat and rabbit models, monitoring the dynamic profile of these crucial biomarkers and their responsiveness to different dietary intakes.

Identifiers

PMID40842875
PMCPMC12364029

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.