Evidence map›Paper›PMID 34093426›Full record

ArticleFrontiers in endocrinology2021

Positive Association of Leptin and Artery Calcification of Lower Extremity in Patients With Type 2 Diabetes Mellitus: A Pilot Study.

SanBao Chai, Yao Chen, SiXu Xin, Ning Yuan, YuFang Liu, JianBin Sun, XiangYu Meng, YongFen Qi

Open access · goldAbstract read
In one paragraph

Article in Frontiers in endocrinology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
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  7. Article
  8. Roles of vitamin K‑dependent protein in biomineralization (Review).International journal of molecular medicine · 2024
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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

8 authors at 2 institutions in 1 country.

SanBao ChaiDepartment of Endocrinology and Metabolism, Peking University International Hospital, Beijing, China.
Yao ChenLaboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, China.
SiXu XinDepartment of Endocrinology and Metabolism, Peking University International Hospital, Beijing, China.
Ning YuanDepartment of Endocrinology and Metabolism, Peking University International Hospital, Beijing, China.
YuFang LiuDepartment of Endocrinology and Metabolism, Peking University International Hospital, Beijing, China.
JianBin SunDepartment of Endocrinology and Metabolism, Peking University International Hospital, Beijing, China.
XiangYu MengThe Central Laboratory, Peking University International Hospital, Beijing, China.
YongFen QiLaboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, China.
Peking University · CNPeking University International Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: We aimed to explore the role and possible mechanism of leptin in lower-extremity artery calcification in patients with type 2 diabetes mellitus (T2DM). Methods: We recruited 59 male patients with T2DM and 39 non-diabetic male participants. All participants underwent computed tomography scan of lower-extremity arteries. The calcification scores (CSs) were analyzed by standardized software. Plasma leptin level was determined by radioimmunoassay kits. Human vascular smooth muscle cells (VSMCs) calcification model was established by beta-glycerophosphate and calcium chlorideinduction. Calcium deposition and mineralization were measured by the o-cresolphthalein complexone method and Alizarin Red staining. The mRNA expression of bone morphogenic protein 2 (BMP2), runt-related transcription factor 2 (Runx2), osteocalcin (OCN) and osteopontin (OPN) was determined by quantitative RT-PCR. The protein levels of BMP2, Runx2, α-smooth muscle actin (α-SMA) and (p)-Akt was determined by Western-blot analysis, and α-SMA was also measured by immunofluorescence analysis. Results: Compared with controls, patients with T2DM showed higher median calcification score in lower-extremity artery [286.50 (IQR 83.41, 1082.00) Conclusions: Leptin promoted lower-extremity artery calcification of T2DM by upregulating the expression of BMP2 and Runx2, and regulating phenotypic switch of VSMCs

Indexed as

Diabetes Mellitus, Type 2AdultAgedArteriesArteriosclerosisCase-Control StudiesCells, CulturedDiabetic AngiopathiesHumansLeptinLower ExtremityMaleMiddle AgedMuscle, Smooth, VascularPilot ProjectsVascular CalcificationLeptinartery calcificationleptinphenotypic switchtype 2 diabetes mellitusVSMC

Identifiers

PMID34093426
PMCPMC8170469
OpenAlexW3160576347

What OpenQuestion holds

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LicenceCC BY
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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.