Evidence map›Paper›PMID 36678127›Full record

ArticleNutrients2023

Associations of Parameters of the Tryptophan-Kynurenine Pathway with Cardiovascular Risk Factors in Hypertensive Patients.

Verena Theiler-Schwetz, Christian Trummer, Martin R Grübler, Martin H Keppel, Armin Zittermann, Andreas Tomaschitz, Winfried März, Andreas Meinitzer, Stefan Pilz

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.3field-weighted citation impact, top 23% 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

11 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Threonine in Coronary Artery Disease: Insights From Metabolic Syndrome Amino Acid Profiling.Medical science monitor : international medical journal of experimental and clinical research · 2026
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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

9 authors at 4 institutions in 3 countries.

Verena Theiler-SchwetzDivision of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria.
Christian TrummerDivision of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria.
Martin R GrüblerRegional Hospital Wiener Neustadt, 2700 Wiener Neustadt, Austria.ORCID 0000-0002-1761-2914
Martin H KeppelDepartment of Laboratory Medicine, Paracelsus Medical University Salzburg, 5020 Salzburg, Austria.
Armin ZittermannClinic for Thoracic and Cardiovascular Surgery, Herz-und Diabeteszentrum Nordrhein-Westfalen (NRW), Ruhr University Bochum, 32545 Bad Oeynhausen, Germany.ORCID 0000-0001-6085-6554
Andreas TomaschitzHealth Center Trofaiach-Gössgrabenstrasse, 8793 Trofaiach, Austria.
Winfried MärzSYNLAB Academy, Synlab Holding Deutschland GmbH, 68159 Mannheim, Germany.ORCID 0000-0001-6083-8946
Andreas MeinitzerClinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria.
Stefan PilzDivision of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria.
Medical University of Graz · ATHeart and Diabetes Center North Rhine-Westphalia · DEParacelsus Medical University · ATUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Accumulating evidence suggests an association of the tryptophan−kynurenine (TRP-KYN) pathway with atherosclerosis and cardiovascular risk factors. In this cross-sectional analysis we investigated whether TRP-KYN pathway parameters are associated with 24 h blood pressure (BP) and other risk factors in patients with arterial hypertension from a tertiary care centre. In 490 participants, we found no significant and independent association of 24 h systolic and diastolic BP with parameters of the TRP-KYN pathway. However, linear regression analyses of HDL as dependent and TRP, KYN and quinolinic acid (QUIN) as explanatory variables adjusted for BMI and sex showed significant associations. These were found for KYN, BMI and sex (unstandardised beta coefficient −0.182, standard error 0.052, p < 0.001; −0.313 (0.078), p < 0.001; −0.180 (0.024), p < 0.001, respectively) as well as for QUIN, BMI and sex (−0.157 (0.038), p < 0.001; −0.321 (0.079), p < 0.001; −0.193 (0.024), p < 0.001, respectively). Smokers had significantly lower levels of KYN (2.36 µmol/L, IQR 2.01−2.98, versus 2.71 µmol/L, IQR 2.31−3.27, p < 0.001), QUIN (384 nmol/L, IQR 303−448, versus 451 nmol/L, IQR 369−575, p < 0.001) and KYN/TRP ratio (38.2, IQR 33.7−43.2, versus 43.1, IQR 37.5−50.9, p < 0.001) compared to non-smokers. We demonstrated that TRP/KYN pathway metabolites are associated with some cardiovascular risk factors, warranting further studies to elucidate the diagnostic and therapeutic potential of the TRP-KYN pathway for cardiovascular diseases.

Indexed as

Cardiovascular DiseasesHypertensionCross-Sectional StudiesHeart Disease Risk FactorsHumansKynurenineRisk FactorsTryptophanKynurenineTryptophanarterial hypertensioncardiovascular risk factorskynurenic acidkynureninetryptophan

Identifiers

PMID36678127
PMCPMC9862689
OpenAlexW4313583868

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.