Evidence map›Paper›PMID 33398528›Full record

ArticleAmino acids2021

Factors associated with elevated plasma phenylalanine in patients with heart failure.

Chi-Wen Cheng, Min-Hui Liu, Hsiang-Yu Tang, Mei-Ling Cheng, Chao-Hung Wang

Abstract read
PubMed Publisher
In one paragraph

Article in Amino acids, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 23 citations in OpenAlex.

  1. Impact of matched samples on domain harmonization in cross-cohort NMR metabolomics.Metabolomics : Official journal of the Metabolomic Society · 2026
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  19. Astragaloside IV Ameliorates Isoprenaline-Induced Cardiac Fibrosis in MiceFrontiers in cellular and infection microbiology · 2022
    Article
  20. Review
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

5 authors at 2 institutions in 1 country.

Chi-Wen ChengDivision of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan.
Min-Hui LiuDivision of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan.
Hsiang-Yu TangMetabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.
Mei-Ling ChengMetabolomics Core Laboratory, Healthy Aging Research Center, Chang Gung University, Taoyuan, Taiwan.
Chao-Hung WangDivision of Cardiology, Department of Internal Medicine, Heart Failure Research Center, Chang Gung Memorial Hospital, 222 Mai Chin Road, Keelung, Taiwan. bearty54@gmail.com.ORCID http://orcid.org/0000-0001-5468-4354
Chang Gung University · TWChing Kuo Institute of Management and Health · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Elevated phenylalanine has been observed in patients with advanced heart failure (HF) and in community cohorts at risk of HF, and has been shown to have prognostic value. This study aimed to explore the factors associated with elevated phenylalanine in HF patients. Mass spectrometry was performed on blood from 669 participants, including 75 normal controls and 594 HF patients (stages A, B, and C). We measured phenylalanine and associated degradation products on the catecholamine pathway, C-reactive protein, valerylcarnitine, methionine sulfoxide, estimated glomerular filtration rate (eGFR), and B-type natriuretic peptide. Longitudinal analysis was conducted on 61 stage C HF patients who had recovered systolic function after 1 year. Phenylalanine and tyrosine levels increased from normal through stages A, B and C. Cross-sectional analysis in patients at stage C showed that phenylalanine levels were related to total bilirubin, eGFR, valerylcarnitine, methionine sulfoxide, C-reactive protein, and male gender. Longitudinal analysis in the patients at stage C with recovered systolic function after 1 year revealed that phenylalanine, tyrosine, methionine sulfoxide, total bilirubin, and C-reactive protein levels significantly decreased from baseline to 12 months. Based on a generalized estimating equations analysis model with time interaction considered, the only significant factor associated with changes in phenylalanine was changes in C-reactive protein concentrations from baseline to 12 months [B (coefficient) = 0.81, P < 0.001] after adjusting for methionine sulfoxide and total bilirubin levels. In conclusion, phenylalanine levels respond sensitively to HF improvement. Our findings suggest that inflammation plays a pivotal role in the elevation of phenylalanine levels in patients with HF.

Indexed as

AdultAgedAged, 80 and overBiomarkersCase-Control StudiesCross-Sectional StudiesFemaleGlomerular Filtration RateHeart FailureHumansMaleMiddle AgedNatriuretic Peptide, BrainPhenylalaninePlasmaYoung AdultBiomarkersNatriuretic Peptide, BrainPhenylalanineHeart failureMetabolismPhenylalaninePrognosisTyrosine

Identifiers

PMID33398528
OpenAlexW3118986501

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.