Cited by 66Cardiovascular Syncope and Autonomic DisordersNeuropeptides and Animal PhysiologyHeart Rate Variability and Autonomic Control

Midregional Pro-Adrenomedullin as a Predictor for Therapeutic Response to Midodrine Hydrochloride in Children With Postural Orthostatic Tachycardia Syndrome

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Zhang, Fengwen, Li, Xueying, Ochs, Todd, Chen, Li, Liao, Ying, Tang, Chaoshu, Jin, Hongfang, Du, Junbao·2012·Journal of the American College of Cardiology

Abstract

Objectives This study was designed to explore the predictive value of the midregional fragment of pro-adrenomedullin (MR-proADM) in assessing the therapeutic efficacy of midodrine hydrochloride for children with postural orthostatic tachycardia syndrome (POTS). Background Midodrine hydrochloride is an important therapeutic option for children with POTS. However, there has not been any method to predict response to the drug. The MR-proADM is produced in equimolar amounts to adrenomedullin (ADM), and directly reflects levels of the rapidly degraded active peptide, ADM. Methods Fifty-seven children with POTS were designated as the POTS group. Twenty healthy children served as the control group. The children in the POTS group received midodrine hydrochloride treatment. The plasma concentration of MR-proADM was measured, using a sandwich immunoluminometric assay. A receiver-operating characteristic curve was used to explore the predictive value of MR-proADM. Results Plasma levels of MR-proADM were significantly higher in children with POTS (75.0 [62.5 to 96.0] pg/ml) than in the control group (58.5 [50.3 to 69.0] pg/ml). Plasma levels of MR-proADM in responders to midodrine hydrochloride was significantly higher than that of nonresponders (76.0 [66.0 to 91.0] pg/ml vs. 59.0 [54.0 to 65.5] pg/ml, p < 0.01]. A receiver-operating characteristic curve on the predictive value of MR-proADM showed that the area under the curve was 0.879 with a 95% confidence interval of 0.761 to 0.997. Using a cutoff value for MR-proADM of 61.5 pg/ml produced both high sensitivity (100%) and specificity (71.6%) in predicting the efficacy of midodrine hydrochloride therapy for treating POTS. Conclusions MR-proADM can help guide midodrine hydrochloride therapy in the management of POTS in children.

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Authors
Zhang, F., Li, X., Ochs, T., Chen, L., Liao, Y., Tang, C., Jin, H., & Du, J.
Affiliations
  • Peking University First Hospital (CN)
  • Northwestern University (US)
  • Peking University (CN)
  • Ministry of Education of the People's Republic of China (CN)
Corresponding author
  • Jin, Hongfang
  • Du, Junbao
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2012-07
Volume
60
Issue
4
Pages
315-320
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2027027558
Cited by
66
References
2
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2023: 2 · 2022: 4 · 2021: 2 · 2020: 7 · 2019: 2 · 2018: 6 · 2017: 6 · 2016: 6 · 2015: 3 · 2014: 12 · 2013: 4 · 2012: 1
FWCI
6.53
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Major Basic Research Project of China (2011CB503904, 2012CB517806)
  • National Twelfth Five-Year Plan for Science & Technology (2012BA103B03)
  • Beijing Science and Technology Project (D10100050010059)
  • National Natural Science Foundation of China (81121061)
Topics
  • Health Sciences › Medicine › Surgery › Cardiovascular Syncope and Autonomic Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuropeptides and Animal Physiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
Keywords
postural orthostatic tachycardia syndrome, midodrine, treatment response prediction, adrenomedullin, pediatric patients, biomarkers
MeSH terms
Adolescent, Blood Pressure, Child, Female, Heart Rate, Humans, Male, Midodrine, Peptide Fragments, Predictive Value of Tests, Protein Precursors, ROC Curve, Sympathomimetics, Biomarkers, Treatment Outcome, Tilt-Table Test, Adrenomedullin, Postural Orthostatic Tachycardia Syndrome

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