Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients

<b>AIM:</b>To compare apelin-13, a ligand of G-protein-coupled receptor which has been shown to be involved in retinal angiogenesis, and vascular endothelial growth factor (VEGF) serum levels in type 2 diabetes mellitus (T2DM) with or without retinopathy, and to investigate the relations...

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Main Authors: Jun-Hui Du, Xia Li, Rong Li, Lin Xu, Ran-Ran Ma, Song-Fang Liu, Zhong Zhang, Hong-Zhi Sun
Format: Article
Language:English
Published: Press of International Journal of Ophthalmology (IJO PRESS) 2014-12-01
Series:International Journal of Ophthalmology
Subjects:
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270990/
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author Jun-Hui Du
Xia Li
Rong Li
Lin Xu
Ran-Ran Ma
Song-Fang Liu
Zhong Zhang
Hong-Zhi Sun
author_facet Jun-Hui Du
Xia Li
Rong Li
Lin Xu
Ran-Ran Ma
Song-Fang Liu
Zhong Zhang
Hong-Zhi Sun
author_sort Jun-Hui Du
collection DOAJ
description <b>AIM:</b>To compare apelin-13, a ligand of G-protein-coupled receptor which has been shown to be involved in retinal angiogenesis, and vascular endothelial growth factor (VEGF) serum levels in type 2 diabetes mellitus (T2DM) with or without retinopathy, and to investigate the relationship between the serum concentration of apelin-13 and diabetes retinopathy.<b>METHODS:</b> Sixty-nine patients with T2DM were enrolled. Of the 69 patients, 16 had proliferative diabetic retinopathy (PDR group), 23 had non-PDR (NPDR group) and 30 had no retinopathy (T2DM group). Subjects’ information, including demographics, medical history, and use of medications were recorded. Their serum samples were collected for measuring the levels of C-reactive protein (CRP), serum lipid and glycosylated hemoglobin. Apelin-13 and VEGF serum levels were measured by enzyme-linked immunosorbent assay. Kruskal-Wallis test and one-way ANOVA were used to compare the differences among these groups. Chi-square test was used to assess categorical variables. Correlations between variables were investigated by Spearman rho correlation test and stepwise regression analysis. All statistical analyses were performed through SPSS 17.0 software.<b>RESULTS:</b>Sex, age, body mass index (BMI), blood pressure, CRP, hemoglobin A1c (HbA1c) have no significantly difference in the three groups. Serum level of apelin-13 was significantly elevated in PDR group as compared with T2DM group (<i>P=</i>0.041). Differences of VEGF serum concentration in the three groups were statistically significant (<i>P=</i>0.007, <i>P=</i>0.007 and <i>P&lt;</i>0.001, respectively). Spearman rho correlation test showed that serum apelin-13 was positively correlated with BMI, serum triglycerides, VEGF, but not with age, duration of diabetes, blood pressure, CRP, HbA1c and total-cholesterol. Stepwise regression analysis showed that BMI also significantly associated with serum apelin-13 (<i>P=</i>0.002), while VEGF and serum triglycerides were irrelevant.<b>CONCLUSION:</b> This study elucidated a positive association of apelin-13 serum level with PDR, but not with VEGF. Apelin-13 may influence the promotion of PDR but unrelated with VEGF.
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spelling doaj.art-be2d080d3a8c469b962a70d91bc49c292022-12-21T18:10:23ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982014-12-017696897310.3980/j.issn.2222-3959.2014.06.10Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patientsJun-Hui Du0Xia Li1Rong Li2Lin Xu3Ran-Ran Ma4Song-Fang Liu5Zhong Zhang6Hong-Zhi Sun7Department of Ophthalmology, Xi’an Ninth Hospital Affiliated to Medical College of Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, China<br>;Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, School of Medicine, Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China<br>Outpatient Department, Guangzhou Sanitorium of PLA, Guangzhou 510515, Guangdong Province, China<br>Department of Ophthalmology, the Affiliated Hospital of Xi''an Medical University, West Fenghao Road 48, Xi’an 710077, Shaanxi Province, China<br>Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, School of Medicine, Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China<br>Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, School of Medicine, Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China<br>Department of Endocrinology, Xi’an Ninth Hospital Affiliated to Medical College of Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, ChinaDepartment of Ophthalmology, Xi’an Ninth Hospital Affiliated to Medical College of Xi’an Jiaotong University, Xi’an 710054, Shaanxi Province, China<br>Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, School of Medicine, Xi’an Jiaotong University, Xi’an 710061, Shaanxi Province, China<br><b>AIM:</b>To compare apelin-13, a ligand of G-protein-coupled receptor which has been shown to be involved in retinal angiogenesis, and vascular endothelial growth factor (VEGF) serum levels in type 2 diabetes mellitus (T2DM) with or without retinopathy, and to investigate the relationship between the serum concentration of apelin-13 and diabetes retinopathy.<b>METHODS:</b> Sixty-nine patients with T2DM were enrolled. Of the 69 patients, 16 had proliferative diabetic retinopathy (PDR group), 23 had non-PDR (NPDR group) and 30 had no retinopathy (T2DM group). Subjects’ information, including demographics, medical history, and use of medications were recorded. Their serum samples were collected for measuring the levels of C-reactive protein (CRP), serum lipid and glycosylated hemoglobin. Apelin-13 and VEGF serum levels were measured by enzyme-linked immunosorbent assay. Kruskal-Wallis test and one-way ANOVA were used to compare the differences among these groups. Chi-square test was used to assess categorical variables. Correlations between variables were investigated by Spearman rho correlation test and stepwise regression analysis. All statistical analyses were performed through SPSS 17.0 software.<b>RESULTS:</b>Sex, age, body mass index (BMI), blood pressure, CRP, hemoglobin A1c (HbA1c) have no significantly difference in the three groups. Serum level of apelin-13 was significantly elevated in PDR group as compared with T2DM group (<i>P=</i>0.041). Differences of VEGF serum concentration in the three groups were statistically significant (<i>P=</i>0.007, <i>P=</i>0.007 and <i>P&lt;</i>0.001, respectively). Spearman rho correlation test showed that serum apelin-13 was positively correlated with BMI, serum triglycerides, VEGF, but not with age, duration of diabetes, blood pressure, CRP, HbA1c and total-cholesterol. Stepwise regression analysis showed that BMI also significantly associated with serum apelin-13 (<i>P=</i>0.002), while VEGF and serum triglycerides were irrelevant.<b>CONCLUSION:</b> This study elucidated a positive association of apelin-13 serum level with PDR, but not with VEGF. Apelin-13 may influence the promotion of PDR but unrelated with VEGF.http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270990/diabetic retinopathyapelin-13vascular endothelial growth factor
spellingShingle Jun-Hui Du
Xia Li
Rong Li
Lin Xu
Ran-Ran Ma
Song-Fang Liu
Zhong Zhang
Hong-Zhi Sun
Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
International Journal of Ophthalmology
diabetic retinopathy
apelin-13
vascular endothelial growth factor
title Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
title_full Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
title_fullStr Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
title_full_unstemmed Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
title_short Elevation of serum apelin-13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
title_sort elevation of serum apelin 13 associated with proliferative diabetic retinopathy in type 2 diabetic patients
topic diabetic retinopathy
apelin-13
vascular endothelial growth factor
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270990/
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