Evidence map›Paper›PMID 39467934›Full record

ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2025

Association between serum IGF‑1 levels and non-motor symptoms in Parkinson's disease.

Lihua Gu, Pengcheng Zhang, Wenchao Zuo, Hao Shu, Pan Wang

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Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
–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

6 citing papers in PubMed.

  1. Insulin-like growth factor receptor signaling in physiology and disease.Signal transduction and targeted therapy · 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

5 authors.

Lihua Gu *Department of Neurology, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Tianjin, 300222, China.ORCID http://orcid.org/0000-0002-6392-1128
Pengcheng Zhang *Institute of Environment and Operational Medicine, Academy of Military Medical Sciences, Academy of Military Sciences, Tianjin, 300041, China.
Wenchao ZuoDepartment of Neurology, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Tianjin, 300222, China.
Hao ShuDepartment of Neurology, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, 210031, China. cerry_shu@hotmail.com.
Pan WangDepartment of Neurology, Tianjin Huanhu Hospital, No. 6 Jizhao Road, Tianjin, 300222, China. wpaofeier@163.com.

Funding

Jiangsu Commission of Health H2023073Tianjin Health Research Project TJWJ2024QN062Tianjin Key Medical Discipline (Specialty) Construction Project TJYXZDXK-052B
6 · The paper itself

Abstract

aimsWe aimed to measure serum insulin-like growth factor 1 (IGF-1) levels in Parkinson's disease (PD) patients and assess their correlation with non-motor symptoms (NMS).

backgroundEmerging evidence suggests that abnormal levels of IGF-1 play a crucial role in the development of PD.

objectiveFurther systematic research is needed to explore the potential roles of abnormal IGF-1 levels in NMS of PD.

methodsThe study enrolled a total of 129 PD patients and 130 healthy controls (HCs). Within the PD cohort, 74 patients were classified as being in the early stage, while 55 were in the moderate stage.

resultsThis study found no significant difference in serum IGF-1 levels between PD patients and HC. Further analysis revealed no significant difference in IGF-1 levels between early-stage PD and those in the moderate stages. Linear regression analysis indicated a significant association between serum IGF-1 levels and Nonmotor Symptom Scale (NMSS) scores in PD patients. Linear regression analysis revealed significant correlations between serum IGF-1 levels and general cognitive function, information processing speed, and executive function in PD patients. Furthermore, lower serum IGF-1 levels were associated with fatigue in PD patients.

conclusionsIn summary, our study suggests a potential association between serum IGF-1 levels and specific NMS in patients with PD. These findings highlight the importance of long-term follow-up studies to determine whether serum biomarkers can serve as valuable tools for early detection of NMS in PD.

Indexed as

Insulin-Like Growth Factor IParkinson DiseaseAgedBiomarkersExecutive FunctionFatigueFemaleHumansMaleMiddle AgedSeverity of Illness IndexBiomarkersIGF1 protein, humanInsulin-Like Growth Factor IInsulin-like growth factor 1Non-motor symptomsParkinson’s diseaseSerum

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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.