Evidence map›Paper›PMID 18708382›Full record

Trial reportCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2008

Pharmacokinetics of 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol and conjugate metabolites in healthy human subjects.

Suzanna M Zick, Zora Djuric, Mack T Ruffin, Amie J Litzinger, Daniel P Normolle, Sara Alrawi, Meihua Rose Feng, Dean E Brenner

Abstract readClinical Trial
In one paragraph

Trial report in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 115 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
115citing papers in PubMed, 1 pooled it
–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

115 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Article
  9. Review
  10. Article
  11. 8-Gingerol Mitigates MPPNeurochemical research · 2026
    Article
  12. 6-Shogaol fromInternational journal of molecular sciences · 2026
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article

55 more citing papers are in PubMed but not listed here.

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

8 authors.

Suzanna M ZickDeoartment of Family Medicine, University of Michigan Medical School, Ann Arbor, MI 48104, USA. szick@med.umich.edu
Zora Djuric
Mack T Ruffin
Amie J Litzinger
Daniel P Normolle
Sara Alrawi
Meihua Rose Feng
Dean E Brenner

Funding

MICHIGAN INSTITUTE FOR CLINICAL AND HEALTH RESEARCH (MICHR) (UL1): (BPCA)UL1RR024986 · NCRR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SHANLEY, THOMAS P. · 2007 to 2011
$51.2M
ZINC GLUCONATE GLYCINE LOZENGES &VITAMIN C EFFECTS ON COMMON COLDM01RR000042 · NCRR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI RUBENFIRE, MELVYN · 1985 to 2007
$40.8M
Ginger for Chemoprevention of Colorectal CancerK07CA102592 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ZICK, SUZANNA M. · 2005 to 2009
$749k
Ginger Control of Chemotherapy Induced Nausea and EmesisR21AT001735 · NCCIH · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ZICK, SUZANNA M · 2003 to 2004
$382k
PHASE I SINGLE &MULTIPLE-DOSE SAFETYN01CN055124 · CN · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI BRENNER, DEAN E. · 1995 to 2000
–
GORDON RESEARCH CONFERENCE ON MUTAGENESIS, 1988R13CA048592 · NCI · GORDON RESEARCH CONFERENCES · PI HUTCHINSON, FRANKLIN · 1988 to 1988
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NCCIH NIH HHS R21AT0001735NCCIH NIH HHS R21 AT001735NCI NIH HHS CN-55124NCI NIH HHS K07 CA102592NCI NIH HHS K07CA102592NCI NIH HHS P30 CA48592NCRR NIH HHS M01 RR000042NCRR NIH HHS M01-RR00024NCRR NIH HHS UL1 RR024986
6 · The paper itself

Abstract

backgroundGinger shows promising anticancer properties. No research has examined the pharmacokinetics of the ginger constituents 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol in humans. We conducted a clinical trial with 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol, examining the pharmacokinetics and tolerability of these analytes and their conjugate metabolites.

methodsHuman volunteers were given ginger at doses from 100 mg to 2.0 g (N = 27), and blood samples were obtained at 15 minutes to 72 hours after a single p.o. dose. The participants were allocated in a dose-escalation manner starting with 100 mg. There was a total of three participants at each dose except for 1.0 g (N = 6) and 2.0 g (N = 9).

resultsNo participant had detectable free 6-gingerol, 8-gingerol, 10-gingerol, or 6-shogaol, but 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol glucuronides were detected. The 6-gingerol sulfate conjugate was detected above the 1.0-g dose, but there were no detectable 10-gingerol or 6-shogaol sulfates except for one participant with detectable 8-gingerol sulfate. The C(max) and area under the curve values (mean +/- SE) estimated for the 2.0-g dose are 0.85 +/- 0.43, 0.23 +/- 0.16, 0.53 +/- 0.40, and 0.15 +/- 0.12 microg/mL; and 65.6.33 +/- 44.4, 18.1 +/- 20.3, 50.1 +/- 49.3, and 10.9 +/- 13.0 microg x hr/mL for 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol. The corresponding t(max) values are 65.6 +/- 44.4, 73.1 +/- 29.4, 75.0 +/- 27.8, and 65.6 +/- 22.6 minutes, and the analytes had elimination half-lives <2 hours. The 8-gingerol, 10-gingerol, and 6-shogaol conjugates were present as either glucuronide or sulfate conjugates, not as mixed conjugates, although 6-gingerol and 10-gingerol were an exception.

conclusionSix-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol are absorbed after p.o. dosing and can be detected as glucuronide and sulfate conjugates.

Indexed as

AdultArea Under CurveCatecholsFatty AlcoholsFemaleHumansMaleMiddle AgedCatecholsFatty Alcoholsgingerolshogaol

Identifiers

PMID18708382
PMCPMC2676573

What OpenQuestion holds

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Registered trials

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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.