Evidence map›Paper›PMID 26043861›Full record

Trial reportEuropean journal of nutrition2016

Comparison of plasma alkylresorcinols (AR) and urinary AR metabolites as biomarkers of compliance in a short-term, whole-grain intervention study.

Nicola M McKeown, Matti Marklund, Jiantao Ma, Alastair B Ross, Alice H Lichtenstein, Kara A Livingston, Paul F Jacques, Helen M Rasmussen, Jeffrey B Blumberg, C-Y Oliver Chen

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 18% of its field
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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

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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

10 authors at 4 institutions in 2 countries.

Nicola M McKeownJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA. nicola.mckeown@tufts.edu.
Matti MarklundDepartment of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Uppsala, Sweden.
Jiantao MaJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Alastair B RossFood and Nutritional Sciences, Department of Life Science Engineering, Chalmers University of Technology, Gothenburg, Sweden.
Alice H LichtensteinJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Kara A LivingstonJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Paul F JacquesJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Helen M RasmussenJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Jeffrey B BlumbergJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
C-Y Oliver ChenJean Mayer U.S. Department of Agriculture (USDA) Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA.
Tufts University · USJean Mayer Human Nutrition Research Center on Aging · USChalmers University of Technology · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAlkylresorcinols (AR) are phenolic lipids present in the bran of wheat and rye. Plasma AR and their urinary metabolites may be suitable biomarkers of whole-grain (WG) wheat and rye consumption. The objective of this study was to examine plasma AR and urinary AR metabolites in response to WG wheat consumption.

methodsIn a randomized crossover study, 19 subjects (10 males, 9 females; BMI 22.0 kg/m(2); age 26 years) incorporated either 3 servings (48 g) or 6 servings (96 g) of WG wheat daily into their regular diet for 1 week. Subjects completed a 2-week washout period, abstaining from all WG consumption, before each intervention. Fasting blood and 24-h urine were collected before and after each intervention. Plasma AR homologues (C19:0, C21:0, C23:0) were quantified by GC-MS after diethyl ether and solid phase extraction and derivatization. Urinary AR metabolites [3,5-dihydroxybenzoic acid and 3-(3,5-dihydroxyphenyl)-propanoic acid] were determined using HPLC with electrochemical detection after enzymatic deconjugation and ethyl acetate extraction.

resultsUrinary total AR metabolites were significantly higher after 6 compared with 3 servings of WG wheat (56 vs. 32 μmol/day, P < 0.001). This dose-response relationship was independent of age, sex, energy intake, and baseline urinary AR metabolite concentration. Plasma total AR tended to be higher after 6 compared with 3 servings of WG wheat (103.0 vs. 86.9 nmol/L), but this difference was not significant (P = 0.42).

conclusionThe results suggest that urinary AR metabolites from 24-h urine collections may be useful as biomarkers of compliance in intervention studies of WG wheat.

Indexed as

DietPatient ComplianceWhole GrainsAdolescentAdultBiomarkersBody Mass IndexCross-Over StudiesDietary FiberFemaleHumansHydroxybenzoatesMalePhenylpropionatesResorcinolsSecale3-(3,5-dihydroxyphenyl)-1-propanoic acidalpha-resorcylic acidBiomarkersDietary FiberHydroxybenzoatesPhenylpropionatesResorcinolsAlkylresorcinolsBiomarkersWhole grainWhole wheat

Identifiers

PMID26043861
OpenAlexW638538167

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.